Mass measurements of the neutron-deficient 41Ti, 45Cr, 49Fe, and 53Ni nuclides: first test of the isobaric multiplet mass equation in f p-shell nuclei.
Mass measurements of the neutron-deficient 41Ti, 45Cr, 49Fe, and 53Ni nuclides: first test of the isobaric multiplet mass equation in f p-shell nuclei.
复制标题
DOI：
10.1103/physrevlett.109.102501
复制
发表时间：
2012-09
影响因子：
8.6
通讯作者：
Yuhu Zhang;Hu Xu;Y. Litvinov;X. Tu;Xun-Wang Yan;S. Typel;K. Blaum;Mei Wang;Mei Wang;
中科院分区：
文献类型：
--
作者：
Yuhu Zhang;Hu Xu;Y. Litvinov;X. Tu;Xun-Wang Yan;S. Typel;K. Blaum;Mei Wang;Mei Wang;
中国，在兰州重离子重离子加速器CSR装置上，对~(58)Ni缺乏中子的弹丸碎片进行了等时质谱分析。测量了一系列短寿命T(Z)=-3/2核素的质量，包括41Ti、45Cr、49Fe和53Ni，测量精度为20-40keV。这些新的数据使我们能够首次检验FP壳层原子核中的等压多重态质量方程。我们观察到，IMME与通常接受的A=53，T=3/2四重奏的二次型不一致。进行了全空间壳体模型计算，并与新的实验结果进行了比较。
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 T(z)=-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.