Development and application of the intense slow positron beam at IHEP
文献类型：期刊论文
| 作者 | Wang, BY; Ma, YY; Wang, P; Cao, XZ; Qin, XB; Zhang, Z; Yu, RS; Wei, L |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2008 |
| 卷号 | 32期号:2页码:156-159 |
| 关键词 | plugged-in Na-22 positron source VEPLS time resolution |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/32/2/016 |
| 文献子类 | 期刊 |
| 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. |
| 电子版国际标准刊号 | 2058-6132 |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000253607100016 |
| 源URL | [https://ir.ihep.ac.cn/handle/311005/304326]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 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):156-159. |
| APA | Wang, BY.,Ma, YY.,Wang, P.,Cao, XZ.,Qin, XB.,...&Wei, L.(2008).Development and application of the intense slow positron beam at IHEP.CHINESE PHYSICS C,32(2),156-159. |
| MLA | Wang, BY,et al."Development and application of the intense slow positron beam at IHEP".CHINESE PHYSICS C 32.2(2008):156-159. |
入库方式： OAI收割
来源：高能物理研究所
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