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Published: 2018-02-23T22:03:17+00:00
2018-02-23T10:00:00+00:00
Author(s): A. V. Afanasjev and H. AbusaraThe nodal structure of the density distributions of the single-particle states occupied in rod-shaped, hyper- and megadeformed structures of nonrotating and rotating $N∼Z$ nuclei has been investigated in detail. The single-particle states with the Nilsson quantum numbers of the $[NN0]1/2$ (with $N$ ...
2018-02-23T10:00:00+00:00
Author(s): Yoshiko Kanada-En'yoStructures of low-lying $0s$-orbit $\mathrm{Λ}$ states in $p$-shell $\mathrm{Λ}$ hypernuclei ($_{\mathrm{Λ}}^{A}Z$) are investigated by applying microscopic cluster models for nuclear structure and a single-channel folding potential model for a $\mathrm{Λ}$ particle. For $A>10$ systems, the size ...
2018-02-23T10:00:00+00:00
Author(s): L. Tan Phuc, N. Quang Hung, and N. Dinh DangThe depletion of the nuclear density at its center, called the nuclear bubble, is studied within the Skyrme Hartree-Fock mean field consistently incorporating the superfluid pairing. The latter is obtained within the finite-temperature Bardeen-Cooper-Schrieffer theory and within the approach using t...
2018-02-23T10:00:00+00:00
Author(s): D. J. Hinde, D. Y. Jeung, E. Prasad, A. Wakhle, M. Dasgupta, M. Evers, D. H. Luong, R. du Rietz, C. Simenel, E. C. Simpson, and E. WilliamsBackground: The formation of superheavy elements (SHEs) by fusion of two massive nuclei is severely inhibited by the competing quasifission process. Low excitation energies favor SHE survival against fusion-fission competition. In “cold” fusion with spherical target nuclei near $^{208}\mathrm{Pb}$, ...
2018-02-23T10:00:00+00:00
Author(s): Xiao Jun Bao (包小军), Shu Qing Guo (郭树青), Hong Fei Zhang (张鸿飞), and Jun Qing Li (李君清)In order to study the influence of the strong Coulomb and nuclear interactions on the dynamics of complete and incomplete fusion, we construct a new four-variable master equation (ME) so that the deformations as well as the nucleon transfer are viewed as consistently governed by MEs in the potential...
2018-02-23T10:00:00+00:00
Author(s): Sungtae Cho, Taesoo Song, and Su Houng LeeWe investigate the freeze-out conditions of a particle in an expanding system of interacting particles in order to understand the productions of resonances, hadronic molecules, and light nuclei in heavy-ion collisions. Applying the kinetic freeze-out condition with explicit hydrodynamic calculations...
2018-02-23T10:00:00+00:00
Author(s): Rashmi Raniwala, Sudhir Raniwala, and Constantin LoizidesIn collisions of identical nuclei at a given impact parameter, the number of nucleons participating in the overlap region of each nucleus can be unequal due to nuclear density fluctuations. The asymmetry due to the unequal number of participating nucleons, referred to as longitudinal asymmetry, caus...
2018-02-23T10:00:00+00:00
Author(s): D. Skoupil and P. BydžovskýExploiting the isobar model, kaon photo- and electroproduction on the proton in the resonance region comes under scrutiny. An upgrade of our previous model, comprising higher-spin nucleon and hyperon exchanges in the consistent formalism, was accomplished by implementing energy-dependent widths of n...
2018-02-23T10:00:00+00:00
Author(s): Péter Pósfay, Gergely Gábor Barnaföldi, and Antal JakovácWe present a functional renormalization group (FRG) calculation of the equation of state (EoS) using our novel technique to treat fluctuations at finite chemical potential. The goal of this calculation was to provide a proof of concept for this technique as well as to estimate the size of the quantu...
2018-02-23T10:00:00+00:00
Author(s): Débora P. Menezes, Marcus B. Pinto, and Constança Providência2018-02-22T10:00:00+00:00
Author(s): Y. FunakiBackground: $α+^{12}\mathrm{C}$ clustering in $^{16}\mathrm{O}$ has been of historical importance in nuclear clustering. In the last 15 years the $4α$ condensate state has been proposed as a new-type cluster state.
2018-02-22T10:00:00+00:00
Author(s): M. D. Jones et al.A model-independent technique was used to determine the $γ$-ray strength function ($γ\mathrm{SF}$) of $^{56}\mathrm{Fe}$ down to $γ$-ray energies less than 1 MeV for the first time with GRETINA using the $(p,{p}^{′})$ reaction at 16 MeV. No difference was observed in the energy dependence of the $γ\...
2018-02-22T10:00:00+00:00
Author(s): H. T. FortuneUsing information from nearby nuclei and a simple model, I estimate that the lowest resonance in $^{16}\mathrm{B}$ should have ${J}^{π}={2}^{−}$ and the structure $^{17}\mathrm{C}(1/{2}^{+})×{({p}_{3/2})}^{−1}$, and not ${0}^{−}$, as previously supposed. If the ${2}^{−}$ is not the ground state, it ...
2018-02-21T10:00:00+00:00
Author(s): L. Xayavong and N. A. SmirnovaWithin the nuclear shell model, we investigate the correction ${δ}_{RO}$ to the Fermi matrix element due to a mismatch between proton and neutron single-particle radial wave functions. Eight superallowed ${0}^{+}→{0}^{+}$ $β$ decays in the $sd$ shell, comprising $^{22}\mathrm{Mg}$, $^{26m}\mathrm{Al...
2018-02-21T10:00:00+00:00
Author(s): M. Burrows, Ch. Elster, G. Popa, K. D. Launey, A. Nogga, and P. MarisBackground: It is well known that effective nuclear interactions are in general nonlocal. Thus if nuclear densities obtained from ab initio no-core shell-model (NCSM) calculations are to be used in reaction calculations, translationally invariant nonlocal densities must be available.
2018-02-21T10:00:00+00:00
Author(s): K. Hadyńska-Klȩk et al.A Coulomb-excitation experiment to study electromagnetic properties of $^{42}\mathrm{Ca}$ was performed using a 170-MeV calcium beam from the TANDEM XPU facility at INFN Laboratori Nazionali di Legnaro. $γ$ rays from excited states in $^{42}\mathrm{Ca}$ were measured with the AGATA spectrometer. The...
2018-02-21T10:00:00+00:00
Author(s): S. Acharya et al. (ALICE Collaboration )Invariant differential yields of deuterons and antideuterons in $pp$ collisions at $\sqrt{s}$ = 0.9, 2.76 and 7 TeV and the yields of tritons, $^{3}\mathrm{He}$ nuclei, and their antinuclei at $\sqrt{s}$ = 7 TeV have been measured with the ALICE detector at the CERN Large Hadron Collider. The measur...
2018-02-21T10:00:00+00:00
Author(s): G. Christian, G. Lotay, C. Ruiz, C. Akers, D. S. Burke, W. N. Catford, A. A. Chen, D. Connolly, B. Davids, J. Fallis, U. Hager, D. Hutcheon, A. Mahl, A. Rojas, and X. SunMeasurements of a nuclear reaction relevant to the synthesis of calcium, potassium, and argon in stars boost the accuracy of models for predicting the elements’ abundance.
(image)2018-02-20T10:00:00+00:00
Author(s): C. McIlroy, C. Barbieri, T. Inoue, T. Doi, and T. HatsudaWe perform ab initio self-consistent Green's function calculations of the closed shell nuclei $^{4}\mathrm{He}$, $^{16}\mathrm{O}$, and $^{40}\mathrm{Ca}$, based on two-nucleon potentials derived from lattice QCD simulations, in the flavor SU(3) limit and at the pseudoscalar meson mass of 469 MeV/${...
2018-02-20T10:00:00+00:00
Author(s): M. Bhuyan, B. V. Carlson, S. K. Patra, and Shan-Gui ZhouIn this theoretical study, we establish a correlation between the neutron skin thickness and the nuclear symmetry energy for the even-even isotopes of Fe, Ni, Zn, Ge, Se, and Kr within the framework of the axially deformed self-consistent relativistic mean field for the nonlinear $\mathrm{NL}{3}^{*}...
2018-02-20T10:00:00+00:00
Author(s): A. K. Singh, A. Basu, Somnath Nag, H. Hübel, J. Domscheit, I. Ragnarsson, A. Al-Khatib, G. B. Hagemann, B. Herskind, D. R. Elema, J. N. Wilson, R. M. Clark, M. Cromaz, P. Fallon, A. Görgen, I.-Y. Lee, D. Ward, and W. C. MaHigh-spin states in $^{124}\mathrm{Cs}$ were populated in the $^{64}\mathrm{Ni}(^{64}\mathrm{Ni},p3n)$ reaction and the Gammasphere detector array was used to measure $γ$-ray coincidences. Both positive- and negative-parity bands, including bands with chiral configurations, have been extended to hig...
2018-02-20T10:00:00+00:00
Author(s): R. Bougault, E. Bonnet, B. Borderie, A. Chbihi, D. Dell'Aquila, Q. Fable, L. Francalanza, J. D. Frankland, E. Galichet, D. Gruyer, D. Guinet, M. Henri, M. La Commara, N. Le Neindre, I. Lombardo, O. Lopez, L. Manduci, P. Marini, M. Pârlog, R. Roy, P. Saint-Onge, G. Verde, E. Vient, and M. Vigilante (INDRA Collaboration)Background: The isovector part of the nuclear equation of state remains partly unknown and is the subject of many studies. The degree of equilibration between the two main collision partners in heavy ion reactions may be used to study the equation of state since it is connected to isospin ($N/Z$) tr...
2018-02-20T10:00:00+00:00
Author(s): M. Yuly, T. Eckert, G. Hartshaw, S. J. Padalino, D. N. Polsin, M. Russ, A. T. Simone, C. R. Brune, T. N. Massey, C. E. Parker, R. Fitzgerald, T. C. Sangster, and S. P. ReganThe $^{12}\mathrm{C}(n,2n)^{11}\mathrm{C}$ cross section was measured from just below threshold to 26.5 MeV using the Pelletron accelerator at Ohio University. Monoenergetic neutrons, produced via the $^{3}\mathrm{H}(d,n)^{4}\mathrm{He}$ reaction, were allowed to strike targets of polyethylene and g...
2018-02-20T10:00:00+00:00
Author(s): H. Eslamizadeh and N. AbdollahiThe dynamics of fission of the excited compound nuclei $^{256}\mathrm{Fm}, ^{215}\mathrm{Fr}, ^{187}\mathrm{Ir}, ^{172}\mathrm{Yb}, ^{162}\mathrm{Yb}$, and $^{142}\mathrm{Ce}$ produced in fusion reactions with 158.8 MeV $^{18}\mathrm{O}$ has been studied by solving three- and four-dimensional Langev...
2018-02-20T10:00:00+00:00
Author(s): J. L Nagle, Ron Belmont, Kurt Hill, Javier Orjuela Koop, Dennis V. Perepelitsa, Pengqi Yin, Zi-Wei Lin, and Darren McGlincheySignatures of collective behavior have been measured in highly relativistic $p+p$ collisions, as well as in $p+\mathrm{A}, d+\mathrm{A}$, and $^{3}\mathrm{He}+\mathrm{A}$ collisions. Numerous particle correlation measurements in these systems have been successfully described by calculations based on...
2018-02-20T10:00:00+00:00
Author(s): Xin-Li Zhao, Yu-Gang Ma, and Guo-Liang MaWe calculate the electromagnetic fields generated in small systems by using a multiphase transport (AMPT) model. Compared to $A+A$ collisions, we find that the absolute electric and magnetic fields are not small in $p+\mathrm{Au}$ and $d+\mathrm{Au}$ collisions at energies available at the BNL Relat...
2018-02-16T10:00:00+00:00
Author(s): K. Nomura, T. Nikšić, and D. VretenarOctupole deformation and the relevant spectroscopic properties of neutron-rich odd-mass barium isotopes are investigated in a theoretical framework based on nuclear density functional theory and the particle-core coupling scheme. The interacting-boson Hamiltonian that describes the octupole-deformed...
2018-02-16T10:00:00+00:00
Author(s): Mitsuhiro Shimada, Yudai Fujioka, Shingo Tagami, and Yoshifumi R. ShimizuRotation of triaxially deformed nucleus has been an interesting subject in the study of nuclear structure. In the present series of work, we investigate wobbling motion and chiral rotation by employing the microscopic framework of angular-momentum projection from cranked triaxially deformed mean-fie...
2018-02-16T10:00:00+00:00
Author(s): Mitsuhiro Shimada, Yudai Fujioka, Shingo Tagami, and Yoshifumi R. ShimizuIn the sequel of the present study, we have investigated the rotational motion of triaxially deformed nucleus by using the microscopic framework of angular-momentum projection. The Woods-Saxon potential and the schematic separable-type interaction are employed as a microscopic Hamiltonian. As the fi...
2018-02-16T10:00:00+00:00
Author(s): Eunja Ha, Myung-Ki Cheoun, and H. SagawaWe study the shape evolution of $N=Z$ nuclei $^{24}\mathrm{Mg},^{28}\mathrm{Si}$, and $^{32}\mathrm{S}$ in the axially symmetric deformed Woods-Saxon model, taking into account both $T=0$ and $T=1$ pairing interactions. We find the coexistence of $T=0$ and $T=1$ superfluidity phases in the large def...
2018-02-16T10:00:00+00:00
Author(s): A. Dobrowolski, K. Mazurek, and A. GóźdźA collective band of positive as well as negative parity could be composed of vibrational and rotational motions. The octupole vibrational configurations can be based either on axial or nonaxial octupole excitations. A consistent approach to the quadrupole-octupole collective vibrations coupled with...
2018-02-16T10:00:00+00:00
Author(s): Alexis Diaz-Torres and Daanish QuraishiThe incomplete fusion dynamics of $^{6}\mathrm{Li}+^{209}\mathrm{Bi}$ collisions at energies above the Coulomb barrier is investigated. The classical dynamical model implemented in the platypus code is used to understand and quantify the impact of both $^{6}\mathrm{Li}$ resonance states and transfer...
2018-02-16T10:00:00+00:00
Author(s): Yu. B. Ivanov and A. A. SoldatovRecent STAR data on the bulk observables in the energy range of the beam energy scan program at the Relativistic Heavy Ion Collider are analyzed within the model of three-fluid dynamics (3FD). The simulations are performed with different equations of state (EoS's). The purely hadronic EoS fails to r...
2018-02-15T10:00:00+00:00
Author(s): Ali A. Alzubadi, R. A. Radhi, and Noori S. ManieThe nuclear structure of the $^{17}\mathrm{O}$ nucleus has been investigated using shell model and self-consistent Hartree-Fock calculations. In particular, elastic and inelastic electron scattering form factors, energy levels, and transition probabilities are calculated for positive and negative lo...
2018-02-15T10:00:00+00:00
Author(s): Chun Shen and Björn SchenkeWe present a fully three-dimensional model providing initial conditions for energy and net-baryon density distributions in heavy-ion collisions at arbitrary collision energy. The model includes the dynamical deceleration of participating nucleons or valence quarks, depending on the implementation. T...
2018-02-14T10:00:00+00:00
Author(s): Yu. B. Ivanov and A. A. SoldatovBaryon and energy densities, which are reached in central Au+Au collisions at collision energy of $\sqrt{{s}_{NN}}=$ 39 GeV, are estimated within the model of three-fluid dynamics. It is shown that the initial thermalized mean proper baryon and energy densities in a sizable central region approximat...
2018-02-14T10:00:00+00:00
Author(s): Tomohiro OishiOne-proton ($1p$) radioactive emission under the influence of the ${\mathrm{Λ}}^{0}$-hyperon inclusion is discussed. I investigate the hyper-$1p$ emitter, $_{\mathrm{Λ}}^{6}\mathrm{Li}$, with a time-dependent three-body model. Two-body interactions for $α$-proton and $α−{\mathrm{Λ}}^{0}$ subsystems ...
2018-02-14T10:00:00+00:00
Author(s): M. I. Gorenstein2018-02-13T10:00:00+00:00
Author(s): G. Fäldt and C. WilkinFully constrained bubble chamber data on the $pp→{π}^{+}pn$ and $pp→{π}^{+}d$ reactions are used to investigate the ratio of the counting rates for the two processes as function of the $pn$ excitation energy $Q$. Though it is important to include effects associated with the $p$-wave nature of pion p...
2018-02-13T10:00:00+00:00
Author(s): F. Wang et al.2018-02-12T10:00:00+00:00
Author(s): J. Dudek, D. Curien, I. Dedes, K. Mazurek, S. Tagami, Y. R. Shimizu, and T. BhattacharjeeWe formulate criteria for identification of the nuclear tetrahedral and octahedral symmetries and illustrate for the first time their possible realization in a rare earth nucleus $^{152}\mathrm{Sm}$. We use realistic nuclear mean-field theory calculations with the phenomenological macroscopic-micros...
2018-02-12T10:00:00+00:00
Author(s): A. Petrovici$β$-decay properties of the odd-odd $N=Z\phantom{\rule{4pt}{0ex}}^{70}\mathrm{Br}$ nucleus are self-consistently explored within the beyond-mean-field complex excited vampir variational model using an effective interaction obtained from a nuclear matter $G$-matrix based on the charge-dependent Bonn ...
2018-02-12T10:00:00+00:00
Author(s): K. Yoshida, M. Gómez-Ramos, K. Ogata, and A. M. MoroBackground: Proton-induced knockout reactions of the form $(p,pN)$ have experienced a renewed interest in recent years due to the possibility of performing these measurements with rare isotopes, using inverse kinematics. Several theoretical models are being used for the interpretation of these new d...
2018-02-12T10:00:00+00:00
Author(s): R. J. PetersonThe areas $dσ/d\mathrm{Ω}$ of fitted quasifree scattering peaks from bound nucleons for continuum hadron-nucleus spectra measuring ${d}^{2}σ/d\mathrm{Ω}dω$ are converted to sum rules akin to the Coulomb sums familiar from continuum electron scattering spectra from nuclear charge. Hadronic spectra wi...
2018-02-12T10:00:00+00:00
Author(s): G. Montagnoli et al.Background: The fusion reaction $^{12}\mathrm{C}+^{30}\mathrm{Si}$ is a link between heavier cases studied in recent years, and the light heavy-ion systems, e.g., $^{12}\mathrm{C}+^{12}\mathrm{C}, ^{16}\mathrm{O}+^{16}\mathrm{O}$ that have a prominent role in the dynamics of stellar evolution. $^{12...
2018-02-12T10:00:00+00:00
Author(s): M. Aaboud et al. (ATLAS Collaboration )A detailed study of multiparticle azimuthal correlations is presented using $pp$ data at $\sqrt{s}=5.02$ and 13 TeV, and $p$+Pb data at $\sqrt{{s}_{\mathrm{NN}}}=5.02$ TeV, recorded with the ATLAS detector at the CERN Large Hadron Collider. The azimuthal correlations are probed using four-particle c...
2018-02-12T10:00:00+00:00
Author(s): Dmitri Kharzeev, Zhoudunming Tu, Aobo Zhang, and Wei LiHigh energy proton-nucleus (pA) collisions provide an important constraint on the study of the chiral magnetic effect in QCD matter. Naively, in pA collisions one expects no correlation between the orientation of the event plane as reconstructed from the azimuthal distribution of produced hadrons an...
2018-02-12T10:00:00+00:00
Author(s): S. Acharya et al. (ALICE Collaboration)The correlations between event-by-event fluctuations of anisotropic flow harmonic amplitudes have been measured in Pb-Pb collisions at $\sqrt{{s}_{\mathit{NN}}}=2.76$ TeV with the ALICE detector at the Large Hadron Collider. The results are reported in terms of multiparticle correlation observables ...
2018-02-09T10:00:00+00:00
Author(s): K. J. Cook, I. P. Carter, E. C. Simpson, M. Dasgupta, D. J. Hinde, L. T. Bezzina, Sunil Kalkal, C. Sengupta, C. Simenel, B. M. A. Swinton-Bland, K. Vo-Phuoc, and E. WilliamsIn collisions of light, stable, weakly bound nuclides, complete fusion (capture of all of the projectile charge) has been found to be suppressed by $∼30%$ at above-barrier energies. This is thought to be related to their low thresholds for breakup into charged clusters. The observation of fusion sup...
2018-02-09T10:00:00+00:00
Author(s): P. Díaz Fernández et al. (R3B Collaboration)Background: For many years, quasifree scattering reactions in direct kinematics have been extensively used to study the structure of stable nuclei, demonstrating the potential of this approach. The $\mathrm{R}^{3}\mathrm{B}$ collaboration has performed a pilot experiment to study quasifree scatterin...
2018-02-09T10:00:00+00:00
Author(s): C. Babcock, R. Klawitter, E. Leistenschneider, D. Lascar, B. R. Barquest, A. Finlay, M. Foster, A. T. Gallant, P. Hunt, B. Kootte, Y. Lan, S. F. Paul, M. L. Phan, M. P. Reiter, B. Schultz, D. Short, C. Andreoiu, M. Brodeur, I. Dillmann, G. Gwinner, A. A. Kwiatkowski, K. G. Leach, and J. DillingPrecise mass measurements of the neutron-rich $^{125–130}\mathrm{In}$ isotopes have been performed with the TITAN Penning trap mass spectrometer. TITAN's electron beam ion trap was used to charge breed the ions to charge state $q=13+$ thus providing the necessary resolving power to measure not only ...
2018-02-09T10:00:00+00:00
Author(s): Yukinao Akamatsu, Aleksas Mazeliauskas, and Derek TeaneyHydrokinetic theory of thermal fluctuations is applied to a nonconformal relativistic fluid. Solving the hydrokinetic equations for an isotropically expanding background we find that hydrodynamic fluctuations give ultraviolet divergent contributions to the energy-momentum tensor. After shifting the ...
2018-02-09T10:00:00+00:00
Author(s): Agnieszka Łuszczak and Wolfgang SchäferWe calculate cross sections and transverse momentum distributions for the incoherent diffractive production of vector mesons $J/ψ$ and $\mathrm{Υ}$ on heavy nuclei. In distinction to coherent diffraction, the nucleus is allowed to break up, but except for the vector meson no new particles are produc...
2018-02-09T10:00:00+00:00
Author(s): Zhi Wei Liu (刘志伟), Zhuang Qian (钱庄), Ruo Yu Xing (邢若愚), Jia Rui Niu (牛佳瑞), and Bao Yuan Sun (孙保元)Adopting the density dependent relativistic mean-field (RMF) and relativistic Hartree-Fock (RHF) approaches, the properties of the nuclear fourth-order symmetry energy ${S}_{4}$ are studied within the covariant density functional (CDF) theory. It is found that the fourth-order symmetry energies are ...
2018-02-09T10:00:00+00:00
Author(s): Tokuro Fukui and Futoshi Minato2018-02-08T10:00:00+00:00
Author(s): Humberto GarcilazoThe cross section of the inclusive process ${π}^{+}d→p(ηp)$ is calculated as a function of the $ηp$ invariant mass when the detected proton is moving in the forward direction. The incident pion has a momentum of ${p}_{\mathrm{lab}}=898.47$ MeV/$c$ for which the $ηp$ pair are left at rest in the labo...
2018-02-08T10:00:00+00:00
Author(s): Archana Saxena, Praveen C. Srivastava, and Toshio SuzukiIn the present work we perform a systematic shell-model study of Gamow-Teller transition-strength distributions in $sd$ shell nuclei using ab initio effective interactions. The ab initio effective interactions are based on in-medium similarity renormalization-group and coupled-cluster effective inte...
2018-02-08T10:00:00+00:00
Author(s): A. Yoshimi et al.Nuclear resonant excitation and detection of its decay signal for the 26.27-keV level of $^{201}\mathrm{Hg}$ is demonstrated with high-brilliance synchrotron radiation (SR) and a fast x-ray detector system. This SR-based photonuclear excitation scheme, known as nuclear resonant scattering (NRS) in t...
2018-02-07T10:00:00+00:00
Author(s): J. M. Dong, Y. H. Zhang, W. Zuo, J. Z. Gu, L. J. Wang, and Y. SunThe Wigner isobaric multiplet mass equation (IMME) is the most fundamental prediction in nuclear physics with the concept of isospin. However, it was deduced based on the Wigner-Eckart theorem with the assumption that all charge-violating interactions can be written as tensors of rank two. In the pr...
2018-02-07T10:00:00+00:00
Author(s): R. A. Haring-Kaye, S. I. Morrow, J. Döring, S. L. Tabor, K. Q. Le, P. R. P. Allegro, P. C. Bender, R. M. Elder, N. H. Medina, J. R. B. Oliveira, and Vandana TripathiHigh-spin states in $^{70}\mathrm{Ge}$ were studied using the $^{55}\mathrm{Mn}$($^{18}\mathrm{O},p2n$) fusion-evaporation reaction at a beam energy of 50 MeV. Prompt $γ\text{−}γ$ coincidences were measured using the Florida State University Compton-suppressed Ge array consisting of three Clover det...
2018-02-07T10:00:00+00:00
Author(s): K. M. Lynch et al.The neutron-rich radium isotopes, $^{222−233}\mathrm{Ra}$, were measured with Collinear Resonance Ionization Spectroscopy (CRIS) at the ISOLDE facility, CERN. The hyperfine structure of the $7{s}^{2}\phantom{\rule{0.16em}{0ex}}^{1}S_{0}→7s7p\phantom{\rule{0.16em}{0ex}}^{3}P_{1}$ transition was probe...
2018-02-06T10:00:00+00:00
Author(s): J. Lerendegui-Marco et al. (n_TOF Collaboration)The spent fuel of current nuclear reactors contains fissile plutonium isotopes that can be combined with uranium to make mixed oxide (MOX) fuel. In this way the Pu from spent fuel is used in a new reactor cycle, contributing to the long-term sustainability of nuclear energy. However, an extensive us...
2018-02-06T10:00:00+00:00
Author(s): S. Mallik, G. Chaudhuri, and F. GulminelliThe origin of bimodal behavior in the residue distribution experimentally measured in heavy ion reactions is reexamined using Boltzmann-Uehling-Uhlenbeck simulations. We suggest that, depending on the incident energy and impact parameter of the reaction, both entrance channel and exit channel effect...
2018-02-06T10:00:00+00:00
Author(s): J. Cepila, J. G. Contreras, and M. KrelinaIn a previous publication, we have presented a model for the photoproduction of $J/ψ$ vector mesons off protons, where the proton structure in the impact-parameter plane is described by an energy-dependent hot-spot profile. Here we extend this model to study the photonuclear production of $J/ψ$ vect...
2018-02-05T10:00:00+00:00
Author(s): M. Sánchez Sánchez, C.-J. Yang, Bingwei Long (龙炳蔚), and U. van KolckWe present a new rearrangement of short-range interactions in the $^{1}S_{0}$ nucleon-nucleon channel within chiral effective field theory. This is intended to address the slow convergence of Weinberg's scheme, which we attribute to its failure to reproduce the amplitude zero (scattering momentum $≃...
2018-02-05T10:00:00+00:00
Author(s): R. BudacaA triaxial rotor Hamiltonian with a rigidly aligned high-$j$ quasiparticle is treated by a time-dependent variational principle, using angular momentum coherent states. The resulting classical energy function has three unique critical points in a space of generalized conjugate coordinates, which can...
2018-02-05T10:00:00+00:00
Author(s): Y. Y. Cheng, Y. M. Zhao, and A. ArimaIn this paper, the formalism for the nucleon-pair approximation (NPA) with particle-hole excitations is developed. By using this approach, one is able to perform multiple-major-shell calculations. In this formulation, we use a particle-hole mixed representation, i.e., the particle-hole conjugate tra...
2018-02-05T10:00:00+00:00
Author(s): B. Bally and T. DuguetBackground: State-of-the-art multi-reference energy density functional calculations require the computation of norm overlaps between different Bogoliubov quasiparticle many-body states. It is only recently that the efficient and unambiguous calculation of such norm kernels has become available under...
2018-02-05T10:00:00+00:00
Author(s): R. Lică et al. (IDS Collaboration)The occurrence of octupolar shapes in the Ba isotopic chain was recently established experimentally up to $N=90$. To further extend the systematics, the evolution of shapes in the most neutron-rich members of the $Z=56$ isotopic chain accessible at present, $^{148,150}\mathrm{Ba}$, has been studied ...
2018-02-05T10:00:00+00:00
Author(s): J. Konki et al.The ground-state rotational band of the neutron-deficient californium ($Z=98$) isotope $^{244}\mathrm{Cf}$ was identified for the first time and measured up to a tentative spin and parity of ${I}^{π}={20}^{+}$. The observation of the rotational band indicates that the nucleus is deformed. The kinema...
2018-02-05T10:00:00+00:00
Author(s): R. M. Id Betan, A. T. Kruppa, and T. VertseBackground: In coupled-channels models the poles of the scattering $S$ matrix are located on different Riemann sheets. Physical observables are affected mainly by poles closest to the physical region but sometimes shadow poles have considerable effect too.
2018-02-05T10:00:00+00:00
Author(s): L. D. Blokhintsev, A. S. Kadyrov, A. M. Mukhamedzhanov, and D. A. SavinA problem of analytical continuation of scattering data to the negative-energy region to obtain information about bound states is discussed within an exactly solvable potential model. This work is continuation of the previous one by the same authors [L. D. Blokhintsev et al., Phys. Rev. C 95, 04461...
2018-02-05T10:00:00+00:00
Author(s): Carl R. Brune, Gerald M. Hale, and Mark W. ParisWe study derivatives of the shift and penetration factors of collision theory with respect to energy, angular momentum, and charge. Definitive results for the signs of these derivatives are found for the repulsive Coulomb case. In particular, we find that the derivative of the shift factor with resp...
2018-02-05T10:00:00+00:00
Author(s): K. Mazurek, A. Szczurek, C. Schmitt, and P. N. NadtochyIn peripheral heavy-ion collisions at ultrarelativistic energies, usually only parts of the colliding nuclei effectively interact with each other. In the overlapping zone, a fireball or quark-gluon plasma is produced. The excitation energy of the heavy remnant can range from a few tens to several hu...
2018-02-02T10:00:00+00:00
Author(s): K. Auranen et al.Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of $^{203}\mathrm{At}\phantom{\rule{4pt}{0ex}}(N=118)$ significantly. We have observed an isomeric $[τ=14.1(3)\phantom{\rule{0.28em}{...
2018-02-01T10:00:00+00:00
Author(s): Toru Harada, Ryotaro Honda, and Yoshiharu HirabayashiWe study phenomenologically inclusive spectra of the $^{6}\mathrm{Li}({π}^{−},\phantom{\rule{0.16em}{0ex}}{K}^{+})$ reaction at 1.2 GeV/$c$ within a distorted-wave impulse approximation with the optimal Fermi-averaging ${π}^{−}p→{K}^{+}{\mathrm{Σ}}^{−}\phantom{\rule{0.16em}{0ex}}t$ matrix. We attemp...
2018-01-31T10:00:00+00:00
Author(s): A. E. Barzakh, D. V. Fedorov, V. S. Ivanov, P. L. Molkanov, F. V. Moroz, S. Yu. Orlov, V. N. Panteleev, M. D. Seliverstov, and Yu. M. VolkovIsotope shift relative to $^{209}\mathrm{Bi}$ and hyperfine splitting for $^{211,213}\mathrm{Bi}$ have been measured by in-source laser spectroscopy at the 306.77-nm atomic transition. The pronounced shell effect both in radii and magnetic moments in Bi isotopes at $N=126$ has been observed. The iso...
2018-01-31T10:00:00+00:00
Author(s): T. Palazzo, G. J. Lane, A. E. Stuchbery, A. J. Mitchell, A. Akber, M. S. M. Gerathy, S. S. Hota, T. Kibédi, B. Q. Lee, N. Palalani, and M. W. ReedThe level structures of $^{212}\mathrm{Ra}$ and $^{213}\mathrm{Ra}$ have been established via time-correlated $γ$-ray spectroscopy following the $^{204}\mathrm{Pb}$($^{12}\mathrm{C},4n$)$^{212}\mathrm{Ra}$ and $^{204}\mathrm{Pb}$($^{13}\mathrm{C},4n$)$^{213}\mathrm{Ra}$ reactions. In $^{212}\mathrm{...
2018-01-31T10:00:00+00:00
Author(s): I. Ahmad, F. G. Kondev, J. P. Greene, and S. ZhuElectron capture decays of $^{243}\mathrm{Bk}$ and $^{244}\mathrm{Bk}$ have been studied by measuring the $γ$-ray spectra of mass-separated sources and level structures of $^{243}\mathrm{Cm}$ and $^{244}\mathrm{Cm}$ have been deduced. In $^{243}\mathrm{Cm}$, the electron capture population to the gr...
2018-01-31T10:00:00+00:00
Author(s): Yan-Qing Ma, Raju Venugopalan, Kazuhiro Watanabe, and Hong-Fei ZhangWe argue that the large suppression of the $ψ(2S)$ inclusive cross section relative to the $J/ψ$ inclusive cross section in proton-nucleus (p+A) collisions can be attributed to factorization breaking effects in the formation of quarkonium. These factorization breaking effects arise from soft color e...
2018-01-31T10:00:00+00:00
Author(s): Antonio Ortiz and Omar VázquezIn this work a study of the fractional momentum loss (${S}_{\mathrm{loss}}$) as a function of the characteristic path length ($L$) and the Bjorken energy density times the equilibration time (${ε}_{\mathrm{Bj}}{τ}_{0}$) for heavy-ion collisions at different $\sqrt{{s}_{NN}}$ is presented. The study ...
2018-01-31T10:00:00+00:00
Author(s): H. Osmanović, M. Hadžimehmedović, R. Omerović, J. Stahov, V. Kashevarov, K. Nikonov, M. Ostrick, L. Tiator, and A. ŠvarcPartial-wave amplitudes of meson photoproduction reactions are an important source of information in baryon spectroscopy. We investigate a new approach in single-energy partial-wave analyses of these reactions. Instead of using a constraint to theoretical models in order to achieve solutions which a...
2018-01-31T10:00:00+00:00
Author(s): S. H. Shiu et al. (LEPS Collaboration)We report the measurement of the $γp→{K}^{+}\mathrm{Λ}$ and $γp→{K}^{+}{\mathrm{Σ}}^{0}$ reactions at SPring-8. The differential cross sections and photon-beam asymmetries are measured at forward ${K}^{+}$ production angles using linearly polarized tagged-photon beams in the range of ${E}_{γ}=1.5–3....
2018-01-30T10:00:00+00:00
Author(s): V. K. Utyonkov et al.We present new results from investigations of the $^{240}\mathrm{Pu}+^{48}\mathrm{Ca}$ reaction at a projectile energy of 250 MeV. Three new decay chains of $^{285}\mathrm{Fl}$ were detected with decay properties mostly consistent with those measured in earlier studies. An additional chain was obser...
2018-01-30T10:00:00+00:00
Author(s): X. L. Tu, X. C. Chen, J. T. Zhang, P. Shuai, K. Yue, X. Xu, C. Y. Fu, Q. Zeng, X. Zhou, Y. M. Xing, J. X. Wu, R. S. Mao, L. J. Mao, K. H. Fang, Z. Y. Sun, M. Wang, J. C. Yang, Yu. A. Litvinov, K. Blaum, Y. H. Zhang, Y. J. Yuan, X. W. Ma, X. H. Zhou, and H. S. XuLifetime measurements of $β$-decaying highly charged ions have been performed in the experimental storage ring (CSRe) by applying the isochronous Schottky mass spectrometry. The fully ionized $^{49}\mathrm{Cr}$ and $^{53}\mathrm{Fe}$ ions were produced in projectile fragmentation of $^{58}\mathrm{Ni...
2018-01-30T10:00:00+00:00
Author(s): C. Schmitt, K. Mazurek, and P. N. NadtochyAn attempt to unfold the respective influence of the fusion and fission stages on typical fission observables, and namely the neutron prescission multiplicity, is proposed. A four-dimensional dynamical stochastic Langevin model is used to calculate the decay by fission of excited compound nuclei pro...
2018-01-30T10:00:00+00:00
Author(s): I. H. Hashim, H. Ejiri, T. Shima, K. Takahisa, A. Sato, Y. Kuno, K. Ninomiya, N. Kawamura, and Y. MiyakeOrdinary muon capture (OMC) on enriched $^{100}\mathrm{Mo}$ isotopes was studied for the first time to investigate neutrino nuclear responses for neutrinoless double-$β$ decays and supernova neutrino nuclear interactions. Muon capture on $^{100}\mathrm{Mo}$ proceeds mainly as $^{100}\mathrm{Mo}(μ,xn...
2018-01-29T10:00:00+00:00
Author(s): Jin Lei and Antonio M. MoroIn this paper, we address the problem of the post-prior equivalence in the calculation of inclusive breakup and transfer cross sections. For that, we employ the model proposed by Ichimura et al. [Phys. Rev. C 32, 431 (1985)], conveniently generalized to include the part of the cross section correspo...
2018-01-29T10:00:00+00:00
Author(s): T. M. Ito et al.The ultracold neutron (UCN) source at Los Alamos National Laboratory (LANL), which uses solid deuterium as the UCN converter and is driven by accelerator spallation neutrons, has been successfully operated for over 10 years, providing UCN to various experiments, as the first production UCN source ba...
2018-01-29T10:00:00+00:00
Author(s): S. Samanta, S. Das, R. Bhattacharjee, S. Chatterjee, R. Raut, S. S. Ghugre, A. K. Sinha, U. Garg, Neelam, N. Kumar, P. Jones, Md. Sazedur R. Laskar, F. S. Babra, S. Biswas, S. Saha, P. Singh, and R. PalitExcited states of the $^{64}\mathrm{Cu}\phantom{\rule{4pt}{0ex}}(Z=29,N=35)$ nucleus have been probed using heavy-ion-induced fusion evaporation reaction and an array of Compton-suppressed Clovers as detection system for the emitted $γ$ rays. More than 50 new transitions have been identified and the...
2018-01-29T10:00:00+00:00
Author(s): Ying Zhang, Jinniu Hu, and Peng LiuThe properties of neutron stars with the strangeness degree of freedom are studied in the relativistic mean-field (RMF) model via including a logarithmic interaction as a function of the scalar meson field. This interaction, named the $σ$-cut potential, can largely reduce the attractive contribution...
2018-01-29T10:00:00+00:00
Author(s): E. M. Kozulin, V. I. Zagrebaev, G. N. Knyazheva, I. M. Itkis, K. V. Novikov, M. G. Itkis, S. N. Dmitriev, I. M. Harca, A. E. Bondarchenko, A. V. Karpov, V. V. Saiko, and E. Vardaci2018-01-26T10:00:00+00:00
Author(s): E. Ferreira, A. K. Kohara, and J. SesmaProofs are given of exact analytical solutions for general principal value integrations of the dispersion relations of $pp$ and $p\overline{p}$ scattering amplitudes. The proofs are based on recent developments in the study of properties of the Lerch's transcendent of the mathematical literature. Di...
2018-01-26T10:00:00+00:00
Author(s): Y. L. Zhang (张彦立) and Y. Z. Wang (王艳召)The probable cluster radioactivity (CR) of $^{294}118$, $^{296}120$, and $^{298}122$ is studied by using the unified description (UD) formula, universal (UNIV) curve, Horoi formula, and universal decay law (UDL). The predictions by the former three models suggest that the probable emitted clusters a...
2018-01-26T10:00:00+00:00
Author(s): H. Naik, G. N. Kim, and K. KimThe cumulative yields of various fission products within the 77–153 mass regions in the 2.5-GeV bremsstrahlung-induced fission of $^{232}\mathrm{Th}$ have been determined by using the recoil catcher and an off-line γ-ray spectrometric technique at the Pohang Accelerator Laboratory, Korea. The mass-y...
2018-01-26T10:00:00+00:00
Author(s): Yongli Xu, Yinlu Han, Jiaqi Hu, Haiying Liang, Zhendong Wu, Hairui Guo, and Chonghai CaiA new global phenomenological optical model potential for the $^{7}\mathrm{Li}$ projectile is derived from the available experimental data of elastic-scattering angular distributions and reaction cross sections from $^{27}\mathrm{Al}$ to $^{208}\mathrm{Pb}$ with incident energies below 200 MeV. It i...
2018-01-25T10:00:00+00:00
Author(s): X. Liu (刘星泉), H. Zheng (郑华), W. Lin (林炜平), M. Huang (黄美容), Y. Y. Yang (杨彦云), J. S. Wang (王建松), R. Wada, A. Bonasera, and J. B. NatowitzIn this article, a mistake in the formulation of the modified Fisher model (MFM) derived in the pioneering works of the Purdue group is addressed and corrected by reversing the sign of the mixing entropy term in the original formulation. The errors in the results of the previous MFM-related studies,...
2018-01-25T10:00:00+00:00
Author(s): Xiaojun Yao and Berndt MüllerWe calculate the dissociation and recombination rates of $\mathrm{Υ}(1S)$ in quark-gluon plasma by using potential nonrelativistic QCD. We then study the dynamical in-medium evolution of the $b\overline{b}−\mathrm{Υ}$ system in a periodic box via the Boltzmann equation and explore how the system rea...
2018-01-25T10:00:00+00:00
Author(s): Spencer Beloin, Sophia Han, Andrew W. Steiner, and Dany PageWe present a quantitative analysis of superfluidity and superconductivity in dense matter from observations of isolated neutron stars in the context of the minimal cooling model. Our new approach produces the best fit neutron triplet superfluid critical temperature, the best fit proton singlet super...
2018-01-24T10:00:00+00:00
Author(s): Balaram Dey, C. Ghosh, Deepak Pandit, A. K. Rhine Kumar, S. Pal, V. Nanal, R. G. Pillay, P. Arumugam, S. De, G. Gupta, H. Krishnamoorthy, E. T. Mirgule, Surajit Pal, and P. C. RoutThis paper reports the first observation of the Jacobi shape transition in $^{31}\mathrm{P}$ using high energy $γ$ rays from the decay of giant dipole resonance (GDR) as a probe. The measured GDR spectrum in the decay of $^{31}\mathrm{P}$ shows a distinct low energy component around 10 MeV, which is...