Approaching the N=82 shell closure with mass measurements of Ag and Cd isotopes


Breitenfeldt M., Borgmann C., Audi G., Baruah S., Beck D., Blaum K., ...Daha Fazla

PHYSICAL REVIEW C, cilt.81, sa.3, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 81 Sayı: 3
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1103/physrevc.81.034313
  • Dergi Adı: PHYSICAL REVIEW C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • İstanbul Üniversitesi Adresli: Evet

Özet

Mass measurements of neutron-rich Cd and Ag isotopes were performed with the Penning trap mass spectrometer ISOLTRAP. The masses of Ag-112,Ag-114-124 and Cd-114,Cd-120,Cd-122-124,Cd-126,Cd-128, determined with relative uncertainties between 2 x 10(-8) and 2 x 10(-7), resulted in significant corrections and improvements of the mass surface. In particular, the mass of Ag-124 was previously unknown. In addition, other masses that had to be inferred from Q values of nuclear decays and reactions have now been measured directly. The analysis includes various mass differences, namely the two-neutron separation energies, the applicability of the Garvey-Kelson relations, double differences of masses delta V-pn, which give empirical proton-neutron interaction strengths, as well as a comparison with recent microscopic calculations. The delta V-pn results reveal that for even-even nuclides around Sn-132 the trends are similar to those in the Pb-208 region.