Positronium annihilation in silica aerogel studied by a positron age-momentum correlation technique
文献类型：期刊论文
| 作者 | Wang, DN; Zhang, LZ; Wang, BY; Yu, RS; Zhang, ZM; Li, DW; Wei, L; Wang DN(王丹妮); Zhang LZ(张兰芝); Wang BY(王宝义)
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| 刊名 | CHINESE PHYSICS C
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| 出版日期 | 2009 |
| 卷号 | 33期号:1页码:#REF! |
| 关键词 | positron age-momentum correlation positronium formation positron states silica aerogel |
| 通讯作者 | Wang, DN (reprint author), CAS, Inst High Energy Phys, Key Lab Nucl Anal Tech, Beijing 100049, Peoples R China. |
| 英文摘要 | A high-performance positron age-momentum correlation (AMOC) spectrometer was newly developed. The counting rate is increased up to 200 cps much larger than the value 20 cps reported by other international groups. And at the same tune, the time resolution still keeps at the international level of 220 ps. Furthermore, positronium (Ps) annihilation in silica aerogel was investigated by AMOC, which indicates: (1) Ps annihilation between the grains dominantly undergoes pick-off process and spin conversion from o-Ps to p-Ps; (2) Annealing below 400 degrees C changes the grain surface conditions, i. e. the desorption of hydrogen and the decrease of the defect centers concentration. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 收录类别 | SCI |
| WOS记录号 | WOS:000262408400017 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226011]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_核技术应用研究中心 |
| 推荐引用方式 GB/T 7714 | Wang, DN,Zhang, LZ,Wang, BY,et al. Positronium annihilation in silica aerogel studied by a positron age-momentum correlation technique[J]. CHINESE PHYSICS C,2009,33(1):#REF!. |
| APA | Wang, DN.,Zhang, LZ.,Wang, BY.,Yu, RS.,Zhang, ZM.,...&魏龙.(2009).Positronium annihilation in silica aerogel studied by a positron age-momentum correlation technique.CHINESE PHYSICS C,33(1),#REF!. |
| MLA | Wang, DN,et al."Positronium annihilation in silica aerogel studied by a positron age-momentum correlation technique".CHINESE PHYSICS C 33.1(2009):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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