Journal of Synchrotron Radiation最新文献_第7页

Resolution enhancement on single-shot X-ray spectrometers using a detuned non-dispersive multi-crystal analyzer. 用失谐非色散多晶分析仪提高单次x射线光谱仪的分辨率。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-17 DOI: 10.1107/S1600577525000505

Taito Osaka, Yuichi Inubushi, Takashi Kameshima, Ichiro Inoue, Makina Yabashi

{"title":"Resolution enhancement on single-shot X-ray spectrometers using a detuned non-dispersive multi-crystal analyzer.","authors":"Taito Osaka, Yuichi Inubushi, Takashi Kameshima, Ichiro Inoue, Makina Yabashi","doi":"10.1107/S1600577525000505","DOIUrl":"10.1107/S1600577525000505","url":null,"abstract":"This study proposes and demonstrates a simple method for improving the energy resolution in a single-shot X-ray spectrometer, which consists of a focusing mirror and a single-crystal analyzer. Two Si(220) channel-cut crystals arranged in a non-dispersive geometry are employed as the analyzer. The angular width of diffraction for the multi-crystal analyzer is reduced by detuning one of the crystals, thereby enhancing the energy resolution of the spectrometer while maintaining the energy range. A proof-of-principle experiment with 10.4 keV X-rays clearly shows a resolution enhancement by a factor of two. It was found that X-ray penetration within the crystals broadened the point-spread function on the detector, significantly impacting the energy resolution under highly detuned conditions. A long detector distance of greater than 14 m is expected to achieve a high energy resolution of 100 meV and a range of 80 eV, enabling full spectral characterization of X-ray free-electron laser radiation as well as advanced spectroscopy techniques.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"288-293"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11892894/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143442489","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}

引用次数: 0

New online beam intensity synchronous monitoring system in scanning transmission X-ray microscopy. 扫描透射x射线显微术中新型光束强度在线同步监测系统。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-04 DOI: 10.1107/S1600577524012141

Yuchen Jiao, Xiangzhi Zhang, Zijian Xu, Zhen Yao, Tianxiao Sun, Yufei Zhang, Bo Zhao, Zhi Guo, Yong Wang, Xiangjun Zhen, Haigang Liu, Shasha Liang, Haitao Li, Xuanyu Zhao, Jian He, Renzhong Tai

{"title":"New online beam intensity synchronous monitoring system in scanning transmission X-ray microscopy.","authors":"Yuchen Jiao, Xiangzhi Zhang, Zijian Xu, Zhen Yao, Tianxiao Sun, Yufei Zhang, Bo Zhao, Zhi Guo, Yong Wang, Xiangjun Zhen, Haigang Liu, Shasha Liang, Haitao Li, Xuanyu Zhao, Jian He, Renzhong Tai","doi":"10.1107/S1600577524012141","DOIUrl":"10.1107/S1600577524012141","url":null,"abstract":"The scanning transmission X-ray microscopy (STXM) platform based on synchrotron radiation has achieved nanoscale imaging with chemical sensitivity using spectro-microscopy techniques. However, the quality of STXM imaging is affected by the stability of the beam intensity. The top-up operation mode of synchrotrons to maintain a constant electron beam intensity introduces periodic fluctuations in the X-ray beam intensity, leading to notable imaging noise that decreases both contrast and precision. To address this issue, a high-speed real-time beam intensity monitoring system was designed and implemented at the BL08U1A beamline of the Shanghai Synchrotron Radiation Facility. This system utilizes an yttrium-aluminium-garnet crystal along with dual detectors having an acquisition frequency of up to 1 MHz and a synchronization error of less than 20 ns between them. This system can precisely and synchronously monitor the X-ray beam intensity variations which are used to remove noise due to electron injection from STXM images, thereby markedly improving the quality of STXM imaging.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"424-431"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11892909/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143191045","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}

引用次数: 0

Enhancing high-energy powder X-ray diffraction applications using a PILATUS4 CdTe detector. 使用PILATUS4 CdTe探测器增强高能粉末x射线衍射应用。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-17 DOI: 10.1107/S1600577525000566

Tilman Donath, Sofia Trampari, Lucas Wagner, Mads R V Jørgensen, Frederik H Gjørup, Stefano Checchia, Marco Di Michiel, Emmanuel Papillon, Gavin Vaughan

{"title":"Enhancing high-energy powder X-ray diffraction applications using a PILATUS4 CdTe detector.","authors":"Tilman Donath, Sofia Trampari, Lucas Wagner, Mads R V Jørgensen, Frederik H Gjørup, Stefano Checchia, Marco Di Michiel, Emmanuel Papillon, Gavin Vaughan","doi":"10.1107/S1600577525000566","DOIUrl":"10.1107/S1600577525000566","url":null,"abstract":"Hybrid photon counting detectors have significantly advanced synchrotron research. In particular, the introduction of large cadmium telluride-based detectors in 2015 enabled a whole new range of high-energy X-ray measurements. This article describes the specifications of the new PILATUS4 cadmium telluride detector and presents results from prototype testing for high-energy powder X-ray diffraction studies conducted at two synchrotrons. The experiments concern time-resolved in situ solid-state reactions at MAX IV (Sweden) and fast-scanning X-ray diffraction computed tomography of a battery cell at the ESRF (France). The detector's high quantum efficiency up to 100 keV, combined with a maximum frame rate of 4000 Hz, enables fast data collection. This study demonstrates how these capabilities contribute to improved time and spatial resolution in high-energy powder X-ray diffraction studies, facilitating advancements in materials, chemical and energy research.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"378-384"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11892907/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143442476","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}

引用次数: 0

Compact laser-driven plasma X-ray source for time-resolved diffraction, spectroscopy and imaging experiments at ELI Beamlines. 紧凑型激光驱动等离子体x射线源，用于ELI光束线的时间分辨衍射，光谱和成像实验。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-19 DOI: 10.1107/S1600577525000645

Y Pulnova, T Parkman, B Angelov, I Baranova, A Zymaková, S Cipiccia, L Fardin, B A Yorke, R Antipenkov, D Peceli, O Hort, D D Mai, J Andreasson, J Nejdl

引用次数: 0

Modelling undulators in ray tracing simulations. 射线追踪模拟中波动的建模。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-13 DOI: 10.1107/S1600577525000190

Manuel Sanchez Del Rio, Juan Reyes-Herrera

引用次数: 0

Probing soft X-ray induced photoreduction of a model Mn-complex at cryogenic conditions. 在低温条件下探测软x射线诱导的模型mn复合物的光还原。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-03 DOI: 10.1107/S1600577524012189

Kuntal Chatterjee, Sang Jun Lee, Li Cheng Kao, Margaret D Doyle, Charles J Titus, Stephen R Leone, Junko Yano, Vittal K Yachandra, Philippe Wernet, Jan F Kern

{"title":"Probing soft X-ray induced photoreduction of a model Mn-complex at cryogenic conditions.","authors":"Kuntal Chatterjee, Sang Jun Lee, Li Cheng Kao, Margaret D Doyle, Charles J Titus, Stephen R Leone, Junko Yano, Vittal K Yachandra, Philippe Wernet, Jan F Kern","doi":"10.1107/S1600577524012189","DOIUrl":"10.1107/S1600577524012189","url":null,"abstract":"Soft X-ray absorption spectroscopy of first row transition elements at their respective L-edges provides important information about the oxidation and spin states of the metal centers. However, the associated sample damage in radiation-sensitive samples substantially alters the electronic and chemical structures of redox-active metal centers. Here, we measure the soft X-ray spectrum of the model MnIII(acac)3 complex containing a redox-active MnIII metal center in an octahedral environment with a superconducting transition-edge sensor detector. To reduce the secondary damage resulting primarily from the diffusion of radicals and electrons, the spectra are collected at 30 K and 80 K on solid samples. Starting from the first scan, we detect the contribution of X-ray induced sample damage leading to a change in the MnII intensity. However, at low temperatures, particularly at 30 K, we do not observe a gradual increase in the radiation damage with successive scans with the X-ray beam at the same spot. At our estimated dose of 90 kGy, we find 62% of MnIII(acac)3 is still intact at 30 K. However, at room temperature, we see a gradual increase in radiation damage with increasing numbers of scans at the same spot, which is consistent with the possibility of increased diffusion rates of secondary radicals and electrons as noted in other studies.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"399-407"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11892889/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143123918","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}

引用次数: 0

Development of the Nanobeam X-ray Experiments instrument at PAL-XFEL. PAL-XFEL纳米束x射线实验仪器的研制。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-12 DOI: 10.1107/S1600577525000426

Jangwoo Kim, HyoJung Hyun, Seonghan Kim, Sun Min Hwang, Myong Jin Kim, Dogeun Jang, Kyung Sook Kim, Jaeyong Shin, Sejin Kim, Junha Hwang, Sung Yun Lee, Eunyoung Park, Sangsoo Kim, Intae Eom, Changyong Song, Daewoong Nam

引用次数: 0

Compensation for the source drift of a free-electron laser beamline by adjusting the fixed-focus constant of the grating monochromator. 通过调整光栅单色仪的定焦常数来补偿自由电子激光光束线的源漂移。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-03 DOI: 10.1107/S1600577524012116

Chaofan Xue, Lian Xue, Yong Wang, Renzhong Tai

引用次数: 0

Long-term timing stabilization for pump-probe experiments at SACLA. SACLA泵-探针实验的长期定时稳定。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-03 DOI: 10.1107/S1600577524011974

Tadashi Togashi, Shigeki Owada, Toshinori Yabuuchi, Makina Yabashi

引用次数: 0

Multi-stage deep learning artifact reduction for parallel-beam computed tomography. 并行束计算机断层扫描的多阶段深度学习伪影减少。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-03-01 Epub Date: 2025-02-17 DOI: 10.1107/S1600577525000359

Jiayang Shi, Daniël M Pelt, K Joost Batenburg

{"title":"Multi-stage deep learning artifact reduction for parallel-beam computed tomography.","authors":"Jiayang Shi, Daniël M Pelt, K Joost Batenburg","doi":"10.1107/S1600577525000359","DOIUrl":"10.1107/S1600577525000359","url":null,"abstract":"Computed tomography (CT) using synchrotron radiation is a powerful technique that, compared with laboratory CT techniques, boosts high spatial and temporal resolution while also providing access to a range of contrast-formation mechanisms. The acquired projection data are typically processed by a computational pipeline composed of multiple stages. Artifacts introduced during data acquisition can propagate through the pipeline and degrade image quality in the reconstructed images. Recently, deep learning has shown significant promise in enhancing image quality for images representing scientific data. This success has driven increasing adoption of deep learning techniques in CT imaging. Various approaches have been proposed to incorporate deep learning into computational pipelines, but each has limitations in addressing artifacts effectively and efficiently in synchrotron CT, either in properly addressing the specific artifacts or in computational efficiency. Recognizing these challenges, we introduce a novel method that incorporates separate deep learning models at each stage of the tomography pipeline - projection, sinogram and reconstruction - to address specific artifacts locally in a data-driven way. Our approach includes bypass connections that feed both the outputs from previous stages and raw data to subsequent stages, minimizing the risk of error propagation. Extensive evaluations on both simulated and real-world datasets illustrate that our approach effectively reduces artifacts and outperforms comparison methods.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"442-456"},"PeriodicalIF":2.5,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11892890/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143442481","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}

引用次数: 0