2018年7月11日
Magic Nature of Neutrons in Ca 54: First Mass Measurements of Ca 55-57
Physical Review Letters
- 巻
- 121
- 号
- 2
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.121.022506
© 2018 American Physical Society. We perform the first direct mass measurements of neutron-rich calcium isotopes beyond neutron number 34 at the RIKEN Radioactive Isotope Beam Factory by using the time-of-flight magnetic-rigidity technique. The atomic mass excesses of Ca55-57 are determined for the first time to be -18650(160), -13510(250), and -7370(990) keV, respectively. We examine the emergence of neutron magicity at N=34 based on the new atomic masses. The new masses provide experimental evidence for the appearance of a sizable energy gap between the neutron 2p1/2 and 1f5/2 orbitals in Ca54, comparable to the gap between the neutron 2p3/2 and 2p1/2 orbitals in Ca52. For the Ca56 nucleus, an open-shell property in neutrons is suggested.
- リンク情報
-
- DOI
- https://doi.org/10.1103/PhysRevLett.121.022506
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/30085708
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000438191700011&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85049984192&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85049984192&origin=inward
- ID情報
-
- DOI : 10.1103/PhysRevLett.121.022506
- ISSN : 0031-9007
- eISSN : 1079-7114
- PubMed ID : 30085708
- SCOPUS ID : 85049984192
- Web of Science ID : WOS:000438191700011