Single-shot spectrometer using diamond microcrystals for X-ray free-electron laser pulses
A simple spectrometer using diffraction from diamond microcrystals has been developed to diagnose single-shot spectra of X-ray free-electron laser (XFEL) pulses. The large grain size and uniform lattice constant of the adopted crystals enable characterizing the XFEL spectrum at a resolution of a few eV from the peak shape of the powder diffraction profile. This single-shot spectrometer has been installed at beamline 3 of SACLA and is used for daily machine tuning. (Source: Journal of Synchrotron Radiation)
Source: Journal of Synchrotron Radiation - March 21, 2022 Category: Physics Authors: Inoue, I. Iwai, E. Hara, T. Inubushi, Y. Tono, K. Yabashi, M. Tags: X-ray free-electron lasers single-shot spectrometers SACLA short communications Source Type: research
Observations of phase changes in monoolein during high viscous injection
Serial crystallography of membrane proteins often employs high-viscosity injectors (HVIs) to deliver micrometre-sized crystals to the X-ray beam. Typically, the carrier medium is a lipidic cubic phase (LCP) media, which can also be used to nucleate and grow the crystals. However, despite the fact that the LCP is widely used with HVIs, the potential impact of the injection process on the LCP structure has not been reported and hence is not yet well understood. The self-assembled structure of the LCP can be affected by pressure, dehydration and temperature changes, all of which occur during continuous flow injection. These c...
Source: Journal of Synchrotron Radiation - March 21, 2022 Category: Physics Authors: Wells, D.J. Berntsen, P. Balaur, E. Kewish, C.M. Adams, P. Aquila, A. Binns, J. Boutet, S. Broomhall, H. Caleman, C. Christofferson, A. Conn, C.E. Dahlqvist, C. Flueckiger, L. Gian Roque, F. Greaves, T.L. Hejazian, M. Hunter, M. Hadian Jazi, M. J ö nsson Tags: high-viscosity injection monoolein lipidic cubic phase cooling effect continuous flow research papers Source Type: research
Design and performance of a dedicated coherent X-ray scanning diffraction instrument at beamline NanoMAX of MAX IV
The diffraction endstation of the NanoMAX beamline is designed to provide high-flux coherent X-ray nano-beams for experiments requiring many degrees of freedom for sample and detector. The endstation is equipped with high-efficiency Kirkpatrick – Baez mirror focusing optics and a two-circle goniometer supporting a positioning and scanning device, designed to carry a compact sample environment. A robot is used as a detector arm. The endstation, in continued development, has been in user operation since summer 2017. (Source: Journal of Synchrotron Radiation)
Source: Journal of Synchrotron Radiation - March 16, 2022 Category: Physics Authors: Carbone, D. Kalbfleisch, S. Johansson, U. Bj ö rling, A. Kahnt, M. Sala, S. Stankevic, T. Rodriguez-Fernandez, A. Bring, B. Matej, Z. Bell, P. Erb, D. Hardion, V. Weninger, C. Al-Sallami, H. Lidon-Simon, J. Carlson, S. Jerrebo, A. Norsk Jensen, B. Bjermo Tags: hard X-ray nanoprobes instrumentation scanning X-ray diffraction coherent X-rays X-ray imaging beamlines Source Type: research
Dose-efficient multimodal microscopy of human tissue at a hard X-ray nanoprobe beamline
X-ray fluorescence microscopy performed at nanofocusing synchrotron beamlines produces quantitative elemental distribution maps at unprecedented resolution (down to a few tens of nanometres), at the expense of relatively long measuring times and high absorbed doses. In this work, a method was implemented in which fast low-dose in-line holography was used to produce quantitative electron density maps at the mesoscale prior to nanoscale X-ray fluorescence acquisition. These maps ensure more efficient fluorescence scans and the reduction of the total absorbed dose, often relevant for radiation-sensitive (e.g. biological) samp...
Source: Journal of Synchrotron Radiation - March 16, 2022 Category: Physics Authors: Sala, S. Zhang, Y. De La Rosa, N. Dreier, T. Kahnt, M. Langer, M. Dahlin, L.B. Bech, M. Villanueva-Perez, P. Kalbfleisch, S. Tags: X-ray microscopy in-line holography X-ray fluorescence emission spectroscopy research papers Source Type: research
In situ phase formation during high-temperature synthesis in clad mechanocomposites based on the Ti – Al system
An in situ synchrotron experimental study of phase formation dynamics in clad mechanocomposites of Ti – Al systems during high-temperature synthesis was performed. Cladding of the obtained mechanocomposites was carried out with an SiO2 target, with a deposition time of 40 min. The high-temperature synthesis was performed using the thermal explosion method based on a microwave induction heater in the in situ mode on an experimental setup adapted to synchrotron radiation time-resolved diffractometry. The influence of the cladding on the macrokinetic parameters of synthesis in situ was investigated experimentally. It wa...
Source: Journal of Synchrotron Radiation - March 15, 2022 Category: Physics Authors: Loginova, M. Sobachkin, A. Sitnikov, A. Yakovlev, V. Myasnikov, A. Sharafutdinov, M. Tolochko, B. Golovina, T. Tags: precursors self-propagating high-temperature synthesis magnetron deposition dynamic diffractometry research papers Source Type: research
