The macromolecular crystallography beamline BL17U1 at the Shanghai Synchrotron Radiation Facility(SSRF) is the first dedicated macromolecular crystallography(MX) beamline at a third-generation synchrotron in China. It...The macromolecular crystallography beamline BL17U1 at the Shanghai Synchrotron Radiation Facility(SSRF) is the first dedicated macromolecular crystallography(MX) beamline at a third-generation synchrotron in China. It utilizes an in-vacuum undulator as a source and is energy-tunable from 5 to 18 ke V. The beamline was commissioned and opened for users in April 2009. The experimental station was upgraded in 2011 with an advanced detector, a high precision goniometer and an automatic sample exchanger for high efficient and high-throughput data collection of protein crystals. The current set-up allows for remote operation of sample mounting, centering and data collection of pre-frozen crystals. In recent two years, the number of PDB depositions from this beamline exceeds 330 each year. In this paper, we describe the complete BL17U1 beamline with upgraded end station and how it is managed for user community.展开更多
利用同步辐射光电离质谱装置,测量了Ar.CO范德瓦尔斯(van der Waals,vdW)团簇的的光电离质谱和光电离效率曲线.将它们与CO分子的绝对光吸收光谱比较,发现在13.9到14.6eV能量范围内的Ar.CO+的光电离效率曲线主要反映了收敛到CO+(X2Σ+,v...利用同步辐射光电离质谱装置,测量了Ar.CO范德瓦尔斯(van der Waals,vdW)团簇的的光电离质谱和光电离效率曲线.将它们与CO分子的绝对光吸收光谱比较,发现在13.9到14.6eV能量范围内的Ar.CO+的光电离效率曲线主要反映了收敛到CO+(X2Σ+,v′=1,2和3)Rydberg系列和收敛到CO+(A2Π)的n=3的振动序列(v′=6—9)的特点;在14.6—15.75eV光子能量范围内的Ar.CO的光电离效率曲线主要反映了CO的光吸收特性.然而,由于Ar和CO之间的相互作用,其中的5个重要的光谱结构发生了蓝移;而在15.75—15.80eV光子能量范围内的Ar-CO的光电离效率曲线,它的属性受到组分Ar和CO的共同影响.与此同时,也从理论上计算了Ar.CO团簇的电离能、Ar.CO团簇和Ar.CO+团簇离子的离解能.展开更多
基金Supported by the Shanghai Synchrotron Radiation Facility Phase-Ⅰprojectthe Upgrading project of Chinese Academy of Sciences(2010)
文摘The macromolecular crystallography beamline BL17U1 at the Shanghai Synchrotron Radiation Facility(SSRF) is the first dedicated macromolecular crystallography(MX) beamline at a third-generation synchrotron in China. It utilizes an in-vacuum undulator as a source and is energy-tunable from 5 to 18 ke V. The beamline was commissioned and opened for users in April 2009. The experimental station was upgraded in 2011 with an advanced detector, a high precision goniometer and an automatic sample exchanger for high efficient and high-throughput data collection of protein crystals. The current set-up allows for remote operation of sample mounting, centering and data collection of pre-frozen crystals. In recent two years, the number of PDB depositions from this beamline exceeds 330 each year. In this paper, we describe the complete BL17U1 beamline with upgraded end station and how it is managed for user community.
文摘利用同步辐射光电离质谱装置,测量了Ar.CO范德瓦尔斯(van der Waals,vdW)团簇的的光电离质谱和光电离效率曲线.将它们与CO分子的绝对光吸收光谱比较,发现在13.9到14.6eV能量范围内的Ar.CO+的光电离效率曲线主要反映了收敛到CO+(X2Σ+,v′=1,2和3)Rydberg系列和收敛到CO+(A2Π)的n=3的振动序列(v′=6—9)的特点;在14.6—15.75eV光子能量范围内的Ar.CO的光电离效率曲线主要反映了CO的光吸收特性.然而,由于Ar和CO之间的相互作用,其中的5个重要的光谱结构发生了蓝移;而在15.75—15.80eV光子能量范围内的Ar-CO的光电离效率曲线,它的属性受到组分Ar和CO的共同影响.与此同时,也从理论上计算了Ar.CO团簇的电离能、Ar.CO团簇和Ar.CO+团簇离子的离解能.
