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, Y. G.1; Fang, D. Q.1; Sun, X. Y.1; Zhou, P.1; Togano, Y.2; Aoi, N.2; Baba, H.2; Cai, X. Z.1; Cao, X. G.1; Chen, J. G.1 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2015-04-09 |
| 卷号 | 743页码:306-309 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2015.02.066 |
| 文献子类 | Article |
| 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. |
| WOS关键词 | RADIOACTIVITY ; STATE ; DECAY |
| 资助项目 | National Natural Science Foundation of China[11421505] ; National Natural Science Foundation of China[11475244] ; National Natural Science Foundation of China[11035009] ; National Natural Science Foundation of China[11175231] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000352147500047 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/47985]  |
| 专题 | 近代物理研究所_实验物理中心 中国科学院近代物理研究所 |
| 通讯作者 | Ma, Y. G. |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 2.RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan 3.Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 5.Univ Tsukuba, Inst Phys, Ibaraki 3058571, Japan 6.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan 7.Univ Tokyo, Ctr Nucl Study, Saitama 3510198, Japan 8.Univ Tokyo, Dept Phys, Tokyo 1130033, Japan |
| 推荐引用方式 GB/T 7714 | Ma, Y. G.,Fang, D. Q.,Sun, X. Y.,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, Y. G..,Fang, D. Q..,Sun, X. Y..,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, Y. G.,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：近代物理研究所
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