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1. 中国科技大学国家同步辐射实验室
2. 中国科技大学国家同步辐射实验室,合肥,230029
纸质出版日期:2007-02-01
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[1]张国斌,吴文清,石军岩,周洪军,戚泽明,符义兵,霍同林.NSRL真空紫外圆二色光谱实验站设计及性能测试[J].核技术,2007(02):105-108.
ZHANG Guobin WU Wenqing SHI Junyan ZHOU Hongjun QI Zeming FU Yibing Huo Tonglin. The design and commissioning of the vacuum-ultraviolet circular dichroism facility at NSRL[J]. Nuclear techniques, 2007, (2): 105-108.
[1]张国斌,吴文清,石军岩,周洪军,戚泽明,符义兵,霍同林.NSRL真空紫外圆二色光谱实验站设计及性能测试[J].核技术,2007(02):105-108. DOI:
ZHANG Guobin WU Wenqing SHI Junyan ZHOU Hongjun QI Zeming FU Yibing Huo Tonglin. The design and commissioning of the vacuum-ultraviolet circular dichroism facility at NSRL[J]. Nuclear techniques, 2007, (2): 105-108. DOI:
本文介绍了中国科学技术大学国家同步辐射实验室(NSRL)真空紫外圆二色光谱测量装置的设计及安装调试结果
包括光学设计、样品池、数据采集系统、以及标准样品测量的结果。该实验站连接在弯铁光源和正入射单色器光束线的末端
在0.5nm光谱分辨下样品点的光子通量大于1012s-1。采用线性起偏器获得线偏振同步辐射
经过光弹调制器(PEM)获得重复频率约50kHz、左右旋交替的圆偏振光。通过高压伺服使得光电倍增管平均输出电流不变;使用锁相放大器采集与PEM同频的交流信号
得到圆二色光谱信号。常规实验条件(氮气氛保护、水作为溶剂、标准样品池)下
可测试的光谱范围是178—300nm。通过采用特殊溶剂、超短光程氟化物样品池等手段
可以将测试的短波限推至140nm。
This paper describes the design and commissioning of the vacuum-ultraviolet circular dichroism facility at NSRL. At 0.5nm resolution
the normal incident beamline can provide ultraviolet and vacuum-ultraviolet radiation at fluxes higher than 1012ph/s
which is converted into the plane polarized light using a polarizer and subsequently converted into the circularly polarized light using a photoelastic modulator with a switching frequency of 50 kHz. Example spectra of (1s)-(+)-10-camphorsulphonic acid (CSA) and myoglobin are given. Normally
the measurable wavelength range is 178—300 nm. But the short wavelength limit can be shifted to 140nm by using special solvent and short light-pass sample cell.
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