Masses of neutron-rich 52-54SC and Ti-54,Ti-56 nuclides: The N=32 subshell closure in scandium
文献类型：期刊论文
| 作者 | Xu, X.; Wang, M. ; Blaum, K.; Holt, J. D.; Litvinov, Yu A.; Schwenk, A.; Simonis, J.; Stroberg, S. R.; Zhang, Y. H.; Xu, H. S.
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| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2019 |
| 卷号 | 99页码:064303 |
| DOI | 10.1103/PhysRevC.99.064303 |
| 英文摘要 | Isochronous mass spectrometry has been applied in the storage ring CSRe to measure the masses of the neutron-rich Sc52-54 and Ti-54,Ti-56 nuclei. The new mass excess values ME (Sc-52) = - 40525(65) keV, ME(Sc-53) = -38910(80) keV, and ME(Sc-54) = -34485(360) keV, deviate from the Atomic Mass Evaluation 2012 by 2.3 sigma, 2.8 sigma, and 1.7 sigma, respectively. These large deviations significantly change the systematics of the two-neutron separation energies of scandium isotopes. The empirical shell gap extracted from our new experimental results shows a significant subshell closure at N = 32 in scandium, with a similar magnitude as in calcium. Moreover, we present ab initio calculations using the valence-space in-medium similarity renormalization group based on two- and three-nucleon interactions from chiral effective field theory. The theoretical results confirm the existence of a substantial N = 32 shell gap in Sc and Ca with a decreasing trend towards lighter isotones, thus providing a consistent picture of the evolution of the N = 32 magic number from the pf into the sd shell. |
| WOS记录号 | WOS:000470856500003 |
| 源URL | [http://119.78.100.186/handle/113462/135906]  |
| 专题 | 近代物理研究所_实验物理中心 近代物理研究所_兰州重离子研究装置 |
| 作者单位 | 1.Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, D-55099 Mainz, Germany 2.Chinese Acad Sci, Key Lab High Precis Nucl Spect, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 3.Chinese Acad Sci, Ctr Nucl Matter Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 4.Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Shaanxi, Peoples R China 5.Max Planck Inst Kernphys, D-69117 Heidelberg, Germany 6.Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany 7.GSI Helmholtzzentrum Schwerionenforsch GmbH, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany 8.Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany 9.Reed Coll, Portland, OR 97202 USA 10.Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, X.,Wang, M.,Blaum, K.,et al. Masses of neutron-rich 52-54SC and Ti-54,Ti-56 nuclides: The N=32 subshell closure in scandium[J]. PHYSICAL REVIEW C,2019,99:064303 . |
| APA | Xu, X..,Wang, M..,Blaum, K..,Holt, J. D..,Litvinov, Yu A..,...&Zhan, W. L..(2019).Masses of neutron-rich 52-54SC and Ti-54,Ti-56 nuclides: The N=32 subshell closure in scandium.PHYSICAL REVIEW C,99,064303 . |
| MLA | Xu, X.,et al."Masses of neutron-rich 52-54SC and Ti-54,Ti-56 nuclides: The N=32 subshell closure in scandium".PHYSICAL REVIEW C 99(2019):064303 . |
入库方式： OAI收割
来源：近代物理研究所
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