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Author (up) Fu, C.Y. et al; Morales, A.I. doi  openurl
  Title Mass Measurements of Exotic 48-50Ar Isotopes: Probing Proton-Neutron Interaction of the Doubly Magic 52Ca and the Robustness of N=32 Subshell Type Journal Article
  Year 2026 Publication Physical Review Letters Abbreviated Journal Phys. Rev. Lett.  
  Volume 137 Issue 6 Pages 062502 - 8pp  
  Keywords  
  Abstract High-precision multireflection time-of-flight mass spectrometry has been applied at BigRIPS-SLOWRI of the Radioactive Isotope Beam Factory (RIBF). The atomic mass of 50Ar was measured for the first time, and the mass value of 49Ar was determined to be 674 keV lower than the one from a previous B rho- TOF measurement, with a precision improved by a factor of 250. The new mass data enable us to determine the empirical proton-neutron interaction strength in the unconventional doubly magic nucleus 52Ca. This strength exhibits a conspicuous variation across shell closures, analogously to what observed in classical doubly magic nuclei. Meanwhile, our measurements support the existence of a weak shell effect at N 1/4 32 in Ar isotopes. To supplement these experimental findings, theoretical calculations were performed for the isotopes of interest, which, compared with data, illustrate the capacity of ab initio expansion methods to capture key quadrupole correlations in doubly open-shell nuclei via an explicit account of nuclear deformation.  
  Address [Fu, C. Y.; Xian, W. D.; Lee, J.; Hou, D. S.; Yap, J. M.] Univ Hong Kong, Dept Phys, Pokfulam, Hong Kong, Peoples R China; [Fu, C. Y.; Wada, M.; Zeng, Q. B.; Ong, H. J.; Ma, X.; Zeng, F. F.] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China; [Xian, W. D.; Wada, M.; Schury, P.; Kimura, S.; Hirayama, Y.; Ito, Y.; Watanabe, Y. X.] High Energy Accelerator Res Org KEK, Inst Particle & Nucl Studies IPNS, Wako Nucl Sci Ctr WNSC, Wako, Saitama 3510198, Japan; [Xian, W. D.] Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Guangdong, Peoples R China; [Niwase, T.] Meiji Univ, Dept Phys, Kawasaki, Kanagawa 2148571, Japan; [Rosenbusch, M.; Ishiyama, H.; Nishimura, S.; Yoshida, S.; Takamine, A.; Zeng, Q. B.; Phong, V. H.; Ueno, H.; Haba, H.; Morales, A. I.; Suzuki, D.; Sakurai, H.; Michimasa, S.; Fukuda, N.; Takeda, H.; Suzuki, H.; Shimizu, Y.; Ohtake, M.; Kusaka, K.; Yanagisawa, Y.; Togano, Y.; Yoshimoto, M.] RIKEN Nishina Ctr, Hirosawa 2-1, Wako, Saitama 3510198, Japan; [Wada, M.] Adv Energy Sci & Technol Guangdong Lab, Huizhou 516000, Peoples R China; [Scalesi, A.] Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden; [Scalesi, A.; Soma, V.; Duguet, T.] Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France; [Yoshida, S.] Utsunomiya Univ, Sch Data Sci & Management, Utsunomiya 3218505, Japan; [Takamine, A.] Kyushu Univ, Dept Phys, 744 Motooka, Fukuoka 8190395, Japan; [Iimura, S.] Rikkyo Univ, Dept Phys, Toshima, Tokyo 1718501, Japan; [Yeung, T. T.; Suzuki, D.] Univ Tokyo, Dept Phys, 7-3-1 Hongo,Bunkyo, Tokyo 1130033, Japan; [Frosini, M.] CEA, DES, IRESNE, DER,SPRC,LEPh, F-13108 St Paul Les Durance, France; [Li, Z. H.; Wu, H. Y.; Zhang, J. Z.] Peking Univ, Sch Phys, Beijing 100871, Peoples R China; [Li, Z. H.; Wu, H. Y.; Zhang, J. Z.] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China; China Inst Atom Energy, Key Lab Nucl Data, Beijing 102413, Peoples R China; [Estrade, A.] Cent Michigan Univ, Dept Phys & Sci, Adv Mat Program, Mt Pleasant, MI 48859 USA; [Khandelwal, M.] Osaka Univ, RCNP, Ibaraki, Osaka 5670047, Japan; [Jang, Y.; Hong, B.] Korea Univ, Dept Phys, Seoul 02841, South Korea; [Morales, A. I.] Univ Valencia, Inst Fis Corpuscular, CSIC, Valencia 46071, Spain; [Kanungo, R.] TRIUMPH, Vancouver, BC V6T 2A3, Canada; [Tanaka, M.] Kyushu Univ, Fac Arts & Sci, Motooka 744,Nishi Ku, Fukuoka 8190395, Japan; [Suzuki, D.] Univ Tokyo, Quark Nucl Sci Inst, 7-3-1 Hongo, Bunkyo, Tokyo 1130033, Japan; [Kim, Y. H.; Moon, B.; Park, J.] Ctr Exot Nucl Studies, Inst Basic Sci, Daejeon 34126, South Korea; [Park, J.] Hope Coll, Dept Phys, Holland, MI 49423 USA, Email: fucy@impcas.ac.cn  
  Corporate Author Thesis  
  Publisher Amer Physical Soc Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0031-9007 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:001848689100006 Approved no  
  Is ISI yes International Collaboration yes  
  Call Number IFIC @ pastor @ Serial 7388  
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