Different mechanism of two-proton emission from proton-rich nuclei Al-23 and Mg-22
文献类型：期刊论文
| 作者 | Ma, YG; Fang, DQ; Sun, XY; Zhou, P; Togano, Y; Aoi, N; Baba, H; Cai, XZ; Cao, XG; Chen, JG |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2015 |
| 卷号 | 743页码:306—309 |
| 关键词 | RADIOACTIVITY STATE DECAY |
| 英文摘要 | Two-proton relative momentum (q(pp)) and opening angle (theta(pp)) distributions from the three-body decay of two excited proton-rich nuclei, namely Al-23 --> p + p + Na-21 and Mg-22 --> p + p + Ne-20, have been measured with the projectile fragment separator (RIPS) at the RIKEN RI Beam Factory. An evident peak at q(pp) similar to 20 MeV/c as well as a peak in theta(pp) around 30 degrees are seen in the two-proton break-up channel from a highly-excited Mg-22. In contrast, such peaks are absent for the Al-23 case. It is concluded that the two-proton emission mechanism of excited Mg-22 is quite different from the Al-23 case, with the former having a favorable diproton emission component at a highly excited state and the latter dominated by the sequential decay process. (C) 2015 The Authors. Published by Elsevier B.V. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24429]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Ma, YG,Fang, DQ,Sun, XY,et al. Different mechanism of two-proton emission from proton-rich nuclei Al-23 and Mg-22[J]. PHYSICS LETTERS B,2015,743:306—309. |
| APA | Ma, YG.,Fang, DQ.,Sun, XY.,Zhou, P.,Togano, Y.,...&Motobayashi, T.(2015).Different mechanism of two-proton emission from proton-rich nuclei Al-23 and Mg-22.PHYSICS LETTERS B,743,306—309. |
| MLA | Ma, YG,et al."Different mechanism of two-proton emission from proton-rich nuclei Al-23 and Mg-22".PHYSICS LETTERS B 743(2015):306—309. |
入库方式： OAI收割
来源：上海应用物理研究所
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