Nonlinear response of phosphor screen used in velocity map imaging spectrometry

doi:10.1016/j.ijms.2019.04.007

	Nonlinear response of phosphor screen used in velocity map imaging spectrometry
	Ma, Xin-Wen2 ; Li, Yu-Fan 1,2; Zhao, Dong-Mei2 ; Zhou, Wen-Chang 1,2; Qian, Dong-Bin2 ; Yang, Jie2 ; Zhang, Shao-Feng2 ; Zhu, Xiao-Long2
刊名	INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
	2019-08-01
卷号	442 页码:23-28
关键词	Velocity map imaging Photoion imaging Photoelectron imaging Linearity of detector
ISSN号	1387-3806
DOI	10.1016/j.ijms.2019.04.007
通讯作者	Qian, Dong-Bin(qiandb@impcas.ac.cn) ; Yang, Jie(jie.yang@impcas.ac.cn)
英文摘要	We present an approach to experimentally investigate the nonlinear response of phosphor screen (PS) module applied in velocity-map-imaging spectrometry under the condition of microchannel plate (MCP) module working in an appropriate amplifier voltage to ensure a constant unsaturation gain. Our approach, taking the Photek's VID240 detector system as an example, is based on the measurements of the position spectra of Rb-87(+) photoion pulses with well-determined numbers of ions and duration times at various voltage differences (U-f) between MCP and PS modules. The measured spectra allow us to obtain the relationship between the two-dimensional distribution of luminescence (the luminescence intensity in the kth pixel) and the total number of ions in one pulse at a given Uf value. The obtained relationship leads to the luminescence efficiency and the acceptable limit of input ion flux density (the maximal number of ions arriving at MCP per unit time per unit area to avoid the nonlinear response) for a particular PS to be determined. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Key RD Program[2017YFA0402300] ; NSFC program[U1232122] ; NSFC program[U1632143]
WOS关键词	DETECTION EFFICIENCIES ; MICROCHANNEL ; DETECTOR ; ENERGY ; ELECTRONS ; IONS
WOS研究方向	Physics ; Spectroscopy
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000472151800004
资助机构	National Key RD Program ; NSFC program
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/133146]
专题	中国科学院近代物理研究所
通讯作者	Qian, Dong-Bin; Yang, Jie
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Ma, Xin-Wen,Li, Yu-Fan,Zhao, Dong-Mei,et al. Nonlinear response of phosphor screen used in velocity map imaging spectrometry[J]. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY,2019,442:23-28.
APA	Ma, Xin-Wen.,Li, Yu-Fan.,Zhao, Dong-Mei.,Zhou, Wen-Chang.,Qian, Dong-Bin.,...&Zhu, Xiao-Long.(2019).Nonlinear response of phosphor screen used in velocity map imaging spectrometry.INTERNATIONAL JOURNAL OF MASS SPECTROMETRY,442,23-28.
MLA	Ma, Xin-Wen,et al."Nonlinear response of phosphor screen used in velocity map imaging spectrometry".INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 442(2019):23-28.