Journal of Synchrotron Radiation最新文献_第2页

High-resolution imaging of organic and inorganic nanoparticles at nanometre-scale resolution by X-ray ensemble diffraction microscopy. x射线系综衍射显微镜在纳米尺度分辨率下的有机和无机纳米颗粒的高分辨率成像。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524010567

Ning Jung Chen, Chia Hui Yeh, Huai Yu Cao, Nai Chi Chen, Chun Jung Chen, Chun Yu Chen, Yi Wei Tsai, Jhih Min Lin, Yu Shan Huang, Chien Nan Hsiao, Chien Chun Chen

{"title":"High-resolution imaging of organic and inorganic nanoparticles at nanometre-scale resolution by X-ray ensemble diffraction microscopy.","authors":"Ning Jung Chen, Chia Hui Yeh, Huai Yu Cao, Nai Chi Chen, Chun Jung Chen, Chun Yu Chen, Yi Wei Tsai, Jhih Min Lin, Yu Shan Huang, Chien Nan Hsiao, Chien Chun Chen","doi":"10.1107/S1600577524010567","DOIUrl":"10.1107/S1600577524010567","url":null,"abstract":"Coherent diffraction microscopy (CDM) is a robust direct imaging method due to its unique 2D/3D phase retrieval capacity. Nonetheless, its resolution faces limitations due to a diminished signal-to-noise ratio (SNR) in high-frequency regions. Addressing this challenge, X-ray ensemble diffraction microscopy (XEDM) emerges as a viable solution, ensuring an adequate SNR in high-frequency regions and effectively surmounting resolution constraints. In this article, two experiments were conducted to underscore XEDM's superior spatial resolution capabilities. These experiments employed 55 nm-sized silicon-gold nanoparticles (NPs) and 19 nm-sized nodavirus-like particles (NV-LPs) on the coherent X-ray scattering beamline of the Taiwan Photon Source. The core-shell density distribution of the silicon-gold NPs was successfully obtained with a radial resolution of 3.4 nm per pixel, while NV-LPs in solution were reconstructed at a radial resolution of 1.3 nm per pixel. The structural information was directly retrieved from the diffraction intensities without prior knowledge and was subsequently confirmed through transmission electron microscopy.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"217-224"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11708854/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848118","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

Multi-segment cooling design of a reflection mirror based on the finite-element method. 基于有限元法的反射镜多段冷却设计。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524009664

Zhen Wang, Yajun Tong, Fang Liu, Chaofan Xue, Limin Jin, Zhi Liu

{"title":"Multi-segment cooling design of a reflection mirror based on the finite-element method.","authors":"Zhen Wang, Yajun Tong, Fang Liu, Chaofan Xue, Limin Jin, Zhi Liu","doi":"10.1107/S1600577524009664","DOIUrl":"10.1107/S1600577524009664","url":null,"abstract":"High-repetition-rate free-electron lasers impose stringent requirements on thermal deformations of optics in the beamline. The Shanghai HIgh-repetition-rate XFEL aNd Extreme light facility (SHINE) experiences high average thermal power and demands wavefront preservation. To effectively manage thermal deformation in the first reflection mirrors M1, we optimized the cooling length and position of the cooling groove with numerical calculations. For example, the root mean square of the height error of the thermal deformation of the mirror at a photon energy of 900 eV was optimized, resulting in a 12.7× reduction, from 13.76 nm to 1.08 nm. This optimized design also eliminated stray light in the focus spot at the sample and resulted in a 177% increase in the peak intensity of the beam's focus spot at the sample, from 3.08 × 105 to 8.53 × 105. The multi-segment cooling design of the mirror advanced the quality of the beam's focus spot at the sample and ensured the stable operation of SHINE under high repetition rates.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"10-16"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11708864/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669537","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

Diffractometer for element-specific analysis on local structures using a combination of X-ray fluorescence holography and anomalous X-ray scattering. 用x射线荧光全息和异常x射线散射相结合的衍射仪对局部结构进行元素特异性分析。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524011366

Hiroo Tajiri, Shinji Kohara, Koji Kimura, Sekhar Halubai, Haruto Morimoto, Naohisa Happo, Jens R Stellhorn, Yohei Onodera, Xvsheng Qiao, Daisuke Urushihara, Peidong Hu, Toru Wakihara, Toyohiko Kinoshita, Koichi Hayashi

{"title":"Diffractometer for element-specific analysis on local structures using a combination of X-ray fluorescence holography and anomalous X-ray scattering.","authors":"Hiroo Tajiri, Shinji Kohara, Koji Kimura, Sekhar Halubai, Haruto Morimoto, Naohisa Happo, Jens R Stellhorn, Yohei Onodera, Xvsheng Qiao, Daisuke Urushihara, Peidong Hu, Toru Wakihara, Toyohiko Kinoshita, Koichi Hayashi","doi":"10.1107/S1600577524011366","DOIUrl":"10.1107/S1600577524011366","url":null,"abstract":"To tackle disorder in crystals and short- and intermediate-range order in amorphous materials, such as glass, we developed a carry-in diffractometer to utilise X-ray fluorescence holography (XFH) and anomalous X-ray scattering (AXS), facilitating element-specific analyses with atomic resolution using the wavelength tunability of a synchrotron X-ray source. Our diffractometer unifies XFH and AXS configurations to determine the crystal orientation via diffractometry. In particular, XFH was realised even for a crystal with blurred emission lines by a standing wave in a hologram, and high-throughput AXS with sufficient count statistics and energy resolution was achieved using three multi-array detectors with crystal analysers. These features increase tractable targets by XFH and AXS, which have novel functionalities.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"125-132"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11708849/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869768","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

3DCryoHolder: a new open access 3D printable system to store and transport silicon nitride membranes under cryogenic conditions for spectromicroscopy at low temperature. 3DCryoHolder：一种新的开放式三维打印系统，用于在低温条件下存储和传输氮化硅膜，以便在低温条件下进行光谱分析。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524010919

Antonio Dominguez-Alfaro, Carlos Sanchez-Cano

引用次数: 0

Thermal deformation compensation scheme to the sub-nanometre level of a piezoelectric offset mirror for MHz repetition rate free-electron laser. MHz重复频率自由电子激光器压电偏置镜亚纳米级热变形补偿方案。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524011469

Baoning Sun, Qinming Li, Chuan Yang, Kai Hu, Zhongmin Xu, Xiaohao Dong, Weiqing Zhang, Xueming Yang

{"title":"Thermal deformation compensation scheme to the sub-nanometre level of a piezoelectric offset mirror for MHz repetition rate free-electron laser.","authors":"Baoning Sun, Qinming Li, Chuan Yang, Kai Hu, Zhongmin Xu, Xiaohao Dong, Weiqing Zhang, Xueming Yang","doi":"10.1107/S1600577524011469","DOIUrl":"10.1107/S1600577524011469","url":null,"abstract":"Free-electron laser (FEL) facilities operating at MHz repetition rates can emit lasers with average powers reaching hundreds of watts. Partial absorption of this power induces thermal deformation of a few micrometres on the mirror surface. Such deformation degrades the characteristics of the reflected photon beam, leading to focal spot aberrations and wavefront distortions that fail to meet experimental requirements. A robust method is necessary to correct the mirror surface shape to meet the Maréchal criterion. This paper proposes a thermal deformation compensation scheme for offset mirrors operating at MHz repetition rates using a piezoelectric deformable mirror. The mirror is side-mounted with slots filled with an indium-gallium alloy, which house copper tubes for water cooling. Eighteen groups of piezo actuators are symmetrically attached to the top and bottom surfaces. The scheme incorporates finite-element analysis for simulation and post-processing verification, utilizing a differential evolution (DE) algorithm for global optimization. The DE algorithm effectively addresses the voltage constraints that the traditional singular value decomposition algorithm cannot handle. Under an X-ray wavelength of 1 nm, the peak-to-valley (PV) height error of the mirror was reduced from 1340.8 nm to 1.1 nm, and the root-mean-square (RMS) height error decreased from 859.1 nm to 0.18 nm. The slope error was corrected to 154 nrad PV and 24 nrad RMS. Significant results were also achieved at an X-ray wavelength of 3 nm. Wave-optics simulations verified the reliability of this approach, and effects on key mirror parameters and conditions were systematically analysed.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"46-56"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11708850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142848166","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

30 years of Journal of Synchrotron Radiation and synchrotron science. 同步辐射杂志》和同步辐射科学 30 周年。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524010798

S Samar Hasnain

引用次数: 0

A fully contained sample holder capable of electron-yield detection at soft X-ray energies. 能够在软x射线能量下进行电子产率检测的完全包含的样品容器。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524011354

S Olivia Gunther, Patrick W Smith, Jacob A Branson, Alexander S Ditter, Stefan G Minasian, Alpha T N'Diaye, Bianca Schacherl, David K Shuh

引用次数: 0

Review and experimental comparison of speckle-tracking algorithms for X-ray phase contrast imaging. x射线相衬成像散斑跟踪算法综述与实验比较。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524010117

Rafael Celestre, Laurène Quénot, Christopher Ninham, Emmanuel Brun, Luca Fardin

引用次数: 0

Reducing heat load density with asymmetric and inclined double-crystal monochromators: principles and requirements revisited. 利用不对称和倾斜双晶单色仪降低热负荷密度：原理与要求再探讨。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524009755

XianRong Huang, Lahsen Assoufid, Albert T Macrander

{"title":"Reducing heat load density with asymmetric and inclined double-crystal monochromators: principles and requirements revisited.","authors":"XianRong Huang, Lahsen Assoufid, Albert T Macrander","doi":"10.1107/S1600577524009755","DOIUrl":"10.1107/S1600577524009755","url":null,"abstract":"Asymmetric double-crystal monochromators (aDCMs) and inclined DCMs (iDCMs) can significantly expand the X-ray beam footprint and consequently reduce the heat load density and gradient. Based on rigorous dynamical theory calculations, the major principles and properties of aDCMs and iDCMs are presented to guide their design and development, particularly for fourth-generation synchrotrons. In addition to the large beam footprint, aDCMs have very large bandwidths (up to ∼10 eV) and angular acceptance, but the narrow angular acceptance of the second crystal requires precise control of the relative orientations and strains. Based on Fourier coupled-wave diffraction theory calculations, it is rigorously proved that the iDCM has almost the same properties as the conventional symmetric DCM, including the efficiency, angular acceptance, bandwidth, tuning energy range and sensitivity to misalignment. The exception is that, for the extremely inclined geometry that can achieve very large footprint expansion, the iDCM has (beneficially) a larger bandwidth and wider angular acceptance. Inclined diffraction has the `rho-kick effect' that can be cancelled by the second reflection of the iDCM (even with misalignment), except that inhomogeneous strains may cause non-uniform rho-kick angles. At present, fabrication/mounting-induced strains pose low risk since they can be controlled to <0.5 µrad over large areas. The only uncertain challenge is the thermally induced strains, yet it is estimated that these strains are naturally lowered by the large footprint and may be further mitigated by optimized cryogenic cooling to the 1-2 µrad level. Overall, aDCMs and iDCMs have more stringent requirements than normal DCMs, but they are feasible schemes in practice.","PeriodicalId":48729,"journal":{"name":"Journal of Synchrotron Radiation","volume":" ","pages":"90-99"},"PeriodicalIF":2.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11708841/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142677491","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 and testing of a dual-frequency real-time hardware feedback system for the hard X-ray nanoprobe beamline of the SSRF. SSRF硬x射线纳米探针光束线双频实时硬件反馈系统的开发和测试。

IF 2.5 3区物理与天体物理

Journal of Synchrotron Radiation Pub Date : 2025-01-01 DOI: 10.1107/S1600577524010208

Zhisen Jiang, Hui Jiang, Yinghua He, Yan He, Dongxu Liang, Huaina Yu, Aiguo Li, Riccardo Signorato

引用次数: 0