Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and nu p nucleosynthesis processes
文献类型：期刊论文
| 作者 | Yamaguchi, T.21; Ozawa, A.1; Frohlich, C.2; Rauscher, T.3; Thielemann, F. -K.4; Sun, B. H.5; Sun, Y.22; Dai, A. C.23; Xu, F. R.23; Xing, Y. M.7,8,9 |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2018-06-10 |
| 卷号 | 781页码:358-363 |
| ISSN号 | 0370-2693 |
| 关键词 | Atomic masses Ion storage ring Isochronous mass spectrometry rp-Process vp-Process |
| DOI | 10.1016/j.physletb.2018.04.009 |
| 英文摘要 | Using isochronous mass spectrometry at the experimental storage ring CSRe in Lanzhou, the masses of Zr-82 and Nb-84 were measured for the first time with an uncertainty of similar to 10 keV, and the masses of (79)y, Zr-81, and Nb-83 were re-determined with a higher precision. The latter are significantly less bound than their literature values. Our new and accurate masses remove the irregularities of the mass surface in this region of the nuclear chart. Our results do not support the predicted island of pronounced low alpha separation energies for neutron-deficient Mo and Tc isotopes, making the formation of Zr-Nb cycle in the rp-process unlikely. The new proton separation energy of Nb-83 was determined to be 490(400) keV smaller than that in the Atomic Mass Evaluation 2012. This partly removes the overproduction of the p-nucleus Sr-84 relative to the neutron-deficient molybdenum isotopes in the previous vp-process simulations. (C) 2018 The Authors. Published by Elsevier B.V. |
| WOS关键词 | GROUND-STATE MASSES ; NUCLEAR-PHYSICS ; STORAGE-RINGS ; DRIVEN WINDS ; BETA-DECAY ; HIRFL-CSR ; MODELS ; ASTROPHYSICS ; SPECTROMETRY ; DEFORMATIONS |
| 资助项目 | U.S. Department of Energy, Office of Science[SC0010263] |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000435653100046 |
| 源URL | [http://119.78.100.186/handle/113462/56953]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Kubono, S.; Litvinov, Yu. A.; Wang, M.; Zhou, X. H. |
| 作者单位 | 1.Univ Tsukuba, Inst Phys, Ibaraki 3058571, Japan 2.North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA 3.Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England 4.Univ Basel, Dept Phys, Klingelbergstr 82, CH-4056 Basel, Switzerland 5.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China 6.RIKEN, iTHES Res Grp, Wako, Saitama 3510198, Japan 7.Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Gansu, Peoples R China 8.Chinese Acad Sci, Inst Modern Phys, Ctr Nucl Matter Sci, Lanzhou 730000, Gansu, Peoples R China 9.GSI Helmholtzzentrum Schwerionenforsch, Planckstra 1, D-64291 Darmstadt, Germany 10.GSI Helmholtzzentrum Schwerionenforsch, ExtreMe Matter Inst EMMI, Planckstr 1, D-64291 Darmstadt, Germany |
| 推荐引用方式 GB/T 7714 | Yamaguchi, T.,Ozawa, A.,Frohlich, C.,et al. Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and nu p nucleosynthesis processes[J]. PHYSICS LETTERS B,2018,781:358-363. |
| APA | Yamaguchi, T..,Ozawa, A..,Frohlich, C..,Rauscher, T..,Thielemann, F. -K..,...&Yamaguchi, Y..(2018).Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and nu p nucleosynthesis processes.PHYSICS LETTERS B,781,358-363. |
| MLA | Yamaguchi, T.,et al."Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and nu p nucleosynthesis processes".PHYSICS LETTERS B 781(2018):358-363. |
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来源：近代物理研究所
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