Preview: Forthcoming in Journal of Synchrotron Radiation
Forthcoming article in Journal of Synchrotron Radiation
Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehen
Current status of the TwinMic beamline at Elettra: a soft X-ray transmission and emission microscopy station
A detailed description of the TwinMic beamline installed at Elettra, Italy, is presented. The beamline hosts a unique soft X-ray microscope supporting both transmission and scanning X-ray microscopy (TXM and STXM, respectively) within the one instrument. The beamline presently fosters the following techniques: STXM, TXM and ptychography, that can be combined with low-energy X-ray fluorescence and X-ray absorption near-edge structure spectroscopies. A detailed update of the design, operational modes and future upgrades of the TwinMic beamline is presented.
Effect of gamma irradiation on X-ray absorption and photoelectron spectroscopy of Nd-doped phosphate glass
Gamma irradiation was found to change the elemental concentration of the atoms in Nd-doped phosphate glass [ok?]. The intensity of the white line in the XANES spectrum correlated with the ratio O/Nd in the glass matrix. The ratio of non-bridging oxygen to total oxygen in the glass after gamma radiation correlated with the concentration of defects in the glass samples. Glasses having a higher concentration of oxygen were found to be soft to gamma irradiation.
Nuclear incorporation of iron during the eukaryotic cell cycle
Scanning X-ray fluorescence microscopy has been used to probe the distribution of S, P and Fe within cell nuclei at the new ID16 beamline. Estimates of P, S and mass signals for the chromosomal matter agree with quantitative X-ray phase contrast projection microscopy images of the same samples, while fluorescence shows Fe incorporation.
Measuring the criticality of the `magic condition' for a beam-expanding monochromator
The effect of minor mismatch between the geometric and single-ray foci for a cylindrically bent Laue double-crystal monochromator is examined and found to be less detrimental than previously believed. Even without exact matching, the transverse coherence of the X-ray beam is not deteriorated by the system, enabling the phase-based imaging techniques critical to modern biomedical imaging experiments.