Journal of Synchrotron Radiation最新文献

{"title":"Real-time streaming tomographic reconstruction with on-demand data capturing and 3D zooming to regions of interest.","authors":"Viktor Nikitin, Aniket Tekawade, Anton Duchkov, Pavel Shevchenko, Francesco De Carlo","doi":"10.1107/S1600577522003095","DOIUrl":"10.1107/S1600577522003095","url":null,"abstract":"<p><p>Complex dynamic tomographic experiments at brilliant X-ray light sources require real-time feedback on the sample changes with respect to environmental conditions, selecting representative regions of interest for high-resolution scanning, and on-demand data saving mechanisms for storing only relevant projections acquired by fast area detectors and reducing data volumes. Here the implementation details of a 3D real-time imaging monitoring instrument, with zooming to a volume of interest with easy-to-use visualization via ImageJ, a tool familiar to most beamline users, is presented. The instrument relies on optimized data flow between the detector and processing machines and is implemented on commodity computers. The instrument has been developed at beamline 2-BM of the Advanced Photon Source, where the automatic lens changing mechanism for zooming is implemented with an Optique Peter microscope. Performance tests demonstrate the ability to process more than 3 GB of projection data per second and generate real-time 3D zooming with different magnification. These new capabilities are essential for new APS Upgrade instruments such as the projection microscope under development at beamline 32-ID. The efficacy of the proposed instrument was demonstrated during an in situ tomographic experiment on ice and gas hydrate formation in porous samples.</p>","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070713/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45622516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of imaging setups for quantitative phase contrast nanoCT of mineralized biomaterials.","authors":"Jussi Petteri Suuronen, Bernhard Hesse, Max Langer, Marc Bohner, Julie Villanova","doi":"10.1107/S1600577522003137","DOIUrl":"10.1107/S1600577522003137","url":null,"abstract":"<p><p>X-ray nano-tomography with phase contrast (nanoCT) using synchrotron radiation is a powerful tool to non-destructively investigate 3D material properties at the nanoscale. In large bone lesions, such as severe bone fractures, bone cancer or other diseases, bone grafts substituting the lost bone might be necessary. Such grafts can be of biological origin or be composed of a synthetic bone substitute. The long-term functioning of artificial bone substitutes depends on many factors. Synchrotron nanoCT imaging has great potential to contribute to further the understanding of integration of implants into bone tissue by imaging the spatial interaction between bone tissue and implant, and by accessing the interface between implant material and bone tissue. With this aim, a methodology for evaluating the image quality is presented for in-line phase contrast nanoCT images of bone scaffold samples. A PMMA-embedded tricalcium phosphate scaffold was used with both a closed and an open porosity structure and bone ingrowths as a representative system of three known materials. Parameters such as spatial resolution and signal-to-noise ratio were extracted and used to explore and quantitatively compare the effects of implementation choices in the imaging setup, such as camera technology and imaging energy, on the resulting image quality. Increasing the X-ray energy from 17.5 keV to 29.6 keV leads to a notable improvement in image quality regardless of the camera technology used, with the two tested camera setups performing at a comparable level when the recorded intensity was kept constant.</p>","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070718/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45653242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-shot spectrometer using diamond microcrystals for X-ray free-electron laser pulses.","authors":"Ichiro Inoue, Eito Iwai, Toru Hara, Yuichi Inubushi, Kensuke Tono, Makina Yabashi","doi":"10.1107/S1600577522001205","DOIUrl":"10.1107/S1600577522001205","url":null,"abstract":"<p><p>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.</p>","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070727/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45670594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The meV XUV-RIXS facility at UE112-PGM1 of BESSY II.","authors":"Karl Bauer, Jan Simon Schmidt, Frank Eggenstein, Régis Decker, Kari Ruotsalainen, Annette Pietzsch, Thomas Blume, Chun Yu Liu, Christian Weniger, Frank Siewert, Jana Buchheim, Grzegorz Gwalt, Friedmar Senf, Peter Bischoff, Lisa Schwarz, Klaus Effland, Matthias Mast, Thomas Zeschke, Ivo Rudolph, Andreas Meißner, Alexander Föhlisch","doi":"10.1107/S1600577522003551","DOIUrl":"10.1107/S1600577522003551","url":null,"abstract":"<p><p>Resonant inelastic X-ray scattering in the XUV-regime has been implemented at BESSY II, pushing for a few-meV bandwidth in inelastic X-ray scattering at transition metal M-edges, rare earth N-edges and the K-edges of light elements up to carbon with full polarization control. The new dedicated low-energy beamline UE112-PGM1 has been designed to provide 1 µm vertical and 20 µm horizontal beam dimensions that serve together with sub-micrometre solid-state sample positioning as the source point for a high-resolution plane grating spectrometer and a high-transmission Rowland spectrometer for rapid overview spectra. The design and commissioning results of the beamline and high-resolution spectrometer are presented. Helium autoionization spectra demonstrate a resolving power of the beamline better than 10 000 at 64 eV with a 300 lines mm^-1 grating while the measured resolving power of the spectrometer in the relevant energy range is 3000 to 6000.</p>","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070711/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48642407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel solution for controlling hardware components of accelerators and beamlines.","authors":"Igor Khokhriakov, Olga Merkulova, Alexander Nozik, Petra Fromme, Victoria Mazalova","doi":"10.1107/S1600577522002685","DOIUrl":"10.1107/S1600577522002685","url":null,"abstract":"<p><p>A novel approach to the remote-control system for the compact multi-crystal energy-dispersive spectrometer for X-ray emission spectroscopy (XES) applications has been developed. This new approach is based on asynchronous communication between software components and on reactive design principles. In this paper, the challenges faced, their solutions, as well as the implementation and future development prospects are identified. The main motivation of this work was the development of a new holistic communication protocol that can be implemented to control various hardware components allowing both independent operation and easy integration into different SCADA systems.</p>","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070715/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41932485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"X-ray zooming optics for analyzer-based multi-contrast computed tomography.","authors":"Keiichi Hirano, Hiroshi Sugiyama, Ryutaro Nishimura, Daisuke Wakabayashi, Yoshio Suzuki, Noriyuki Igarashi, Nobumasa Funamori","doi":"10.1107/S1600577522001412","DOIUrl":"10.1107/S1600577522001412","url":null,"abstract":"<p><p>An X-ray analyzer-based optics with a zoom function is proposed for observing various samples with apparent-absorption contrast, phase contrast and scattering contrast. The proposed X-ray optics consists of a collimator crystal and an analyzer crystal arranged in a nondispersive (+, -) geometry with a sample placed between them. For the implementation of the zoom function, an asymmetrically cut crystal in the rotated-inclined geometry was used for the analyzer. Proof-of-principle experiments were performed at the vertical wiggler beamline BL-14B of the Photon Factory. First, the magnification was set to 1×, and then it was zoomed into the optimal magnification (10×). At these magnifications, tri-modal contrast cross-sectional images of a sample were obtained by computed tomography. It was confirmed that the image quality at 10× was superior to that at 1×. This achievement opens up new possibilities for observing an entire sample or regions of interest within a sample at optimal magnification, and is expected to be useful for materials science, condensed matter physics, archeology and biomedical science.</p>","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070698/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42036360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observations of phase changes in monoolein during high viscous injection.","authors":"Daniel J Wells, Peter Berntsen, Eugeniu Balaur, Cameron M Kewish, Patrick Adams, Andrew Aquila, Jack Binns, Sébastien Boutet, Hayden Broomhall, Carl Caleman, Andrew Christofferson, Charlotte E Conn, Caroline Dahlqvist, Leonie Flueckiger, Francisco Gian Roque, Tamar L Greaves, Majid Hejazian, Mark Hunter, Marjan Hadian Jazi, H Olof Jönsson, Sachini Kadaoluwa Pathirannahalage, Richard A Kirian, Alex Kozlov, Ruslan P Kurta, Hugh Marman, Derek Mendez, Andrew Morgan, Keith Nugent, Dominik Oberthuer, Harry Quiney, Juliane Reinhardt, Saumitra Saha, Jonas A Sellberg, Raymond Sierra, Max Wiedorn, Brian Abbey, Andrew V Martin, Connie Darmanin","doi":"10.1107/S1600577522001862","DOIUrl":"10.1107/S1600577522001862","url":null,"abstract":"<p><p>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 changes to the LCP structure may in turn impact the results of X-ray diffraction measurements from membrane protein crystals. To investigate the influence of HVIs on the structure of the LCP we conducted a study of the phase changes in monoolein/water and monoolein/buffer mixtures during continuous flow injection, at both atmospheric pressure and under vacuum. The reservoir pressure in the HVI was tracked to determine if there is any correlation with the phase behaviour of the LCP. The results indicated that, even though the reservoir pressure underwent (at times) significant variation, this did not appear to correlate with observed phase changes in the sample stream or correspond to shifts in the LCP lattice parameter. During vacuum injection, there was a three-way coexistence of the gyroid cubic phase, diamond cubic phase and lamellar phase. During injection at atmospheric pressure, the coexistence of a cubic phase and lamellar phase in the monoolein/water mixtures was also observed. The degree to which the lamellar phase is formed was found to be strongly dependent on the co-flowing gas conditions used to stabilize the LCP stream. A combination of laboratory-based optical polarization microscopy and simulation studies was used to investigate these observations.</p>","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9070699/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48569830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generalized pole figures from post-processing whole Debye–Scherrer patterns for microstructural analysis on deformed materials","authors":"E. Benatti, N. D. De Vincentis, N. Al-hamdany, N. Schell, H. Brokmeier, M. Ávalos, R. Bolmaro","doi":"10.1107/S160057752200220X","DOIUrl":"https://doi.org/10.1107/S160057752200220X","url":null,"abstract":"Debye–Scherrer patterns, obtained from X-ray diffraction experiments using synchrotron light in transmission geometry, were analysed to construct generalized pole figures. Generalized orientation distribution functions of cold-rolled and then annealed interstitial-free steel were obtained to investigate microstructure developments in this material.","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41967250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heavy metals concentrations and speciation of Pb and Ni in airborne particulate matter over two residential sites in Greater Cairo – reflection from synchrotron radiation","authors":"M. H. Monged, N. Imam, G. Aquilanti, S. Pollastri, A. Rashad, J. Osán","doi":"10.1107/S1600577522003058","DOIUrl":"https://doi.org/10.1107/S1600577522003058","url":null,"abstract":"XANES and X-ray fluorescence combined with inductively coupled plasma-mass spectrometry were used to quantify and identify heavy metals concentrations as well as the chemical speciation of Pb and Ni, which have considerable public health impacts in Egypt.","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49521077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of clamping force on distortion of the optical surface of monochromators during assembly","authors":"E. Bainbridge, J. Griffiths, J. Clunan, P. Docker","doi":"10.1107/S1600577522003149","DOIUrl":"https://doi.org/10.1107/S1600577522003149","url":null,"abstract":"This work demonstrates the effects of clamping force on the optical surface of a monochromator silicon crystal through the use of finite-element analysis.","PeriodicalId":17114,"journal":{"name":"Journal of Synchrotron Radiation","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46732559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}