A new method to suppress high-order harmonics for a synchrotron radiation soft X-ray beamline

GUO Zhi-Ying; XING Hai-Ying; HONG Cai-Hao; TANG Kun; HAN Yong; CHEN Dong-Liang; ZHAO Yi-Dong

doi:10.1088/1674-1137/39/4/048002

Chinese Physics C> 2015, Vol. 39> Issue(4) : 048002 DOI: 10.1088/1674-1137/39/4/048002

A new method to suppress high-order harmonics for a synchrotron radiation soft X-ray beamline

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Abstract：
A feasible and convenient method is proposed to suppress higher-harmonics for a varied-line-spacing plane grating monochromator in the soft X-ray region. Related calculations and experiments demonstrate that decreasing the included angle slightly by changing the parameter of the exit arm length can significantly improve light purity. This method is suitable and has been used for experiments of detector calibration in beamline 4B7B at the Beijing Synchrotron Radiation Facility (BSRF).

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GUO Zhi-Ying, XING Hai-Ying, HONG Cai-Hao, TANG Kun, HAN Yong, CHEN Dong-Liang and ZHAO Yi-Dong. A new method to suppress high-order harmonics for a synchrotron radiation soft X-ray beamline[J]. Chinese Physics C, 2015, 39(4): 048002. doi: 10.1088/1674-1137/39/4/048002

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Received: 2014-08-29
Revised: 2014-10-11

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沈阳化工大学材料科学与工程学院沈阳 110142

A new method to suppress high-order harmonics for a synchrotron radiation soft X-ray beamline

Corresponding author: ZHAO Yi-Dong,

Received Date: 2014-08-29
Accepted Date: 2014-10-11
Available Online: 2015-04-05

Abstract: A feasible and convenient method is proposed to suppress higher-harmonics for a varied-line-spacing plane grating monochromator in the soft X-ray region. Related calculations and experiments demonstrate that decreasing the included angle slightly by changing the parameter of the exit arm length can significantly improve light purity. This method is suitable and has been used for experiments of detector calibration in beamline 4B7B at the Beijing Synchrotron Radiation Facility (BSRF).