Mass Measurements of the Neutron-Deficient 41Ti, 45Cr, 49Fe, and 53Ni Nuclides: First Test of the Isobaric Multiplet Mass Equation in fp-Shell Nuclei

Autor: Y H, Zhang, H S, Xu, Yu A, Litvinov, X L, Tu, X L, Yan, S, Typel, K, Blaum, M, Wang, X H, Zhou, Y, Sun, B A, Brown, Y J, Yuan, J W, Xia, J C, Yang, G, Audi, X C, Chen, G B, Jia, Z G, Hu, X W, Ma, R S, Mao, B, Mei, P, Shuai, Z Y, Sun, S T, Wang, G Q, Xiao, X, Xu, T, Yamaguchi, Y, Yamaguchi, Y D, Zang, H W, Zhao, T C, Zhao, W, Zhang, W L, Zhan
Jazyk: angličtina
Rok vydání: 2012
Zdroj: Physical Review Letters
Popis: Isochronous mass spectrometry has been applied to neutron-deficient 58Ni projectile fragments at the HIRFL-CSR facility in Lanzhou, China. Masses of a series of short-lived Tz=-3/2 nuclides including 41Ti, 45Cr, 49Fe, and 53Ni have been measured with a precision of 20–40 keV. The new data enable us to test for the first time the isobaric multiplet mass equation (IMME) in fp-shell nuclei. We observe that the IMME is inconsistent with the generally accepted quadratic form for the A=53, T=3/2 quartet. We perform full space shell model calculations and compare them with the new experimental results.
Databáze: OpenAIRE