Development and application of the intense slow positron beam at IHEP
文献类型：期刊论文
| 作者 | 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
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| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2008 |
| 卷号 | 32期号:2页码:#REF! |
| 关键词 | plugged-in Na-22 positron source VEPLS time resolution |
| 通讯作者 | Wang, BY (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China. |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 收录类别 | SCI |
| WOS记录号 | WOS:000253607100016 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226564]  |
| 专题 | 高能物理研究所_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!. |
入库方式： OAI收割
来源：高能物理研究所
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