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Development and application of the intense slow positron beam at IHEP
Wang BY(王宝义); Ma YY(马雁云); Wang P(王平); Cao XZ(曹兴忠); Qin XB(秦秀波); Zhang Z(张哲); Yu RS(于润升); Wei L(魏龙); Wang, BY; Ma, YY; Wang, P; Cao, XZ; Qin, XB; Zhang, Z; Yu, RS; Wei, L
2008
发表期刊CHINESE PHYSICS C
卷号32期号:2页码:#REF!
通讯作者Wang, BY (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要This paper describes the development and application of an intense slow positron beam at IHEP with regard to its two main components. The Variable-Energy Positron Lifetime Spectroscopy (VEPLS) based on the pulsing system consisting of a chopper, a prebuncher and a buncher has been constructed in order to meet the needs of materials science development. At present, the time resolution of the VEPLS can easily reach about 386 ps with a peak-to-background ratio of about 600:1. A plugged-in Na-22 positron source section for adjusting the newly built experimental station and for increasing the beam operation efficiency has been constructed. A slow positron beam with an intensity of 2.5x10(5) e(+)/s and the beam profile whose diameter is 10 mm has been obtained; the moderation efficiency of the tungsten mesh moderator reaches 5.1x10(-4) as calculated with an original positron source activity of 52 mCi.
文章类型Article
关键词plugged-in Na-22 positron source VEPLS time resolution
学科领域Physics
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000253607100016
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226564
专题多学科研究中心
推荐引用方式
GB/T 7714
Wang BY,Ma YY,Wang P,et al. Development and application of the intense slow positron beam at IHEP[J]. CHINESE PHYSICS C,2008,32(2):#REF!.
APA 王宝义.,马雁云.,王平.,曹兴忠.,秦秀波.,...&Wei, L.(2008).Development and application of the intense slow positron beam at IHEP.CHINESE PHYSICS C,32(2),#REF!.
MLA 王宝义,et al."Development and application of the intense slow positron beam at IHEP".CHINESE PHYSICS C 32.2(2008):#REF!.
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