Measurement of the magnetic moments of 14B and 15B using projectile fragmentation spin polarization
Measurement of the magnetic moments of 14B and 15B using projectile fragmentation spin polarization
复制标题
使用射弹碎片自旋极化测量 14B 和 15B 的磁矩
DOI：
10.1016/0370-2693(95)00630-4
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发表时间：
1995
影响因子：
4.4
通讯作者：
M. Ishihara
中科院分区：
文献类型：
--
作者：
H. Okuno;K. Asahi;H. Ueno;H. Izumi;H. Sato;M. Adachi;T. Nakamura;T. Kubo;N. Inabe;A. Yoshida;N. Fukunishi;T. Shimoda;H. Miyatake;N. Takahashi;W. Schmidt;M. Ishihara
利用弹丸碎裂反应中的抛射自旋极化现象作为产生极化放射性核的工具，用β-核磁共振方法测得14B和15B的磁矩分别为μ(14B)=(1.185±0.005)μ和μ(15B)=(2.659±0.015)μ，其中μ为核磁子。与壳层模型计算结果的比较表明，与14B的d52轨道相比，中子s12轨道的单粒子能量显著下移，同时也表明了SD壳层中子的Jπ=2+组态的重要性。因此，磁矩的测量提供了关于轻质量不稳定核新可及区域的核结构的有用信息。
By making use of the phenomenon of ejectile spin polarization in the projectile fragmentation reaction as a tool to produce polarized radioactive nuclei, the magnetic moments of14B and15B have been determined by the β-NMR measurement, to be μ(14B ) = (1.185±0.005) μnand μ(15B ) = (2.659±0.015) μnwhere μnis the nuclear magneton. The comparison of the results with shell model calculations suggests that the single-particle energy of the neutron s1 2orbit shifts downwards considerably compared with the d5 2orbit in14B, and also indicates the importance of Jπ= 2+configurations of neutrons in the sd shell. Thus, it is demonstrated that the measurement of magnetic moments provides useful information on the nuclear structure in the newly accessible region of light-mass unstable nuclei.