Doubly-magic nature of {sup 56}Ni: Measurement of the ground state nuclear magnetic dipole moment of {sup 55}Ni
Doubly-magic nature of {sup 56}Ni: Measurement of the ground state nuclear magnetic dipole moment of {sup 55}Ni
复制标题
{sup 56}Ni的双魔性质：{sup 55}Ni基态核磁偶极矩的测量
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
I. Towner
中科院分区：
文献类型：
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作者：
J. Berryman;K. Minamisono;W. Rogers;B. A. Brown;H. Crawford;G. Grinyer;P. Mantica;J. Stoker;I. Towner
利用射线探测核磁共振技术，推导出基态核磁矩为(${I}^{ensuremath{pi}}=3/{2}^{ensuremath{-}}$，{T}_{1/2}=204$ms)=$|ensuremath{mu}(^{55}mathrm{Ni})|=(0.976ifmmodepmelse_(55)mathm{Ni}_{1/2}=204$ms)，并由此推算出基态的核磁矩为{EnsureMath{Mu}}_{N}$。在具有GXPF1相互作用的全$mathit{fp}$壳模型空间中的壳模型计算结果重现了实验值。连同镜像伙伴的已知磁矩$^{55}mathm{Co}$，等标量自旋期望值被提取为$ensuremath{langle}ensuremath{sum}{ensuremath{sigma}}_{z}ensuremath{
角度}=0.91ifmmodesmse extpmfi{}0.07$。The$ensuremath{langle}ensuremath{sum}{ensuremath{sigma}}_{z}ensuremath{
Angel}$显示了与$mathit{sd}$外壳中建立的趋势类似的趋势。关于$Ensureath{Mu}(^{55}mathm{Ni})$和$ensuremath{langle}ensuremath{sum}{ensuremath{sigma}}_{z}ensuremath{的现有理论解释
角度}$对于$T=1/2$，$A=55$镜像合作伙伴支持$^{56}主元{Ni}$核心的柔软性。
The nuclear magnetic moment of the ground state of $^{55}mathrm{Ni}$ (${I}^{ensuremath{pi}}=3/{2}^{ensuremath{-}}$, ${T}_{1/2}=204$ ms) has been deduced to be $|ensuremath{mu}(^{55}mathrm{Ni})|=(0.976ifmmodepmelse extpmfi{}0.026) {ensuremath{mu}}_{N}$ using the $ensuremath{eta}$-ray detecting nuclear magnetic resonance technique. Results of a shell model calculation in the full $mathit{fp}$ shell model space with the GXPF1 interaction reproduce the experimental value. Together with the known magnetic moment of the mirror partner $^{55}mathrm{Co}$, the isoscalar spin expectation value was extracted as $ensuremath{langle}ensuremath{sum}{ensuremath{sigma}}_{z}ensuremath{
angle}=0.91ifmmodepmelse extpmfi{}0.07$. The $ensuremath{langle}ensuremath{sum}{ensuremath{sigma}}_{z}ensuremath{
angle}$ shows a trend similar to that established in the $mathit{sd}$ shell. The present theoretical interpretations of both $ensuremath{mu}(^{55}mathrm{Ni})$ and $ensuremath{langle}ensuremath{sum}{ensuremath{sigma}}_{z}ensuremath{
angle}$ for the $T=1/2$, $A=55$ mirror partners support the softness of the $^{56}mathrm{Ni}$ core.