MAGNETIC DIPOLE SPIN-RESONANCE IN RARE-EARTH NUCLEI

被引：26

作者：

DECOSTER, C ^{[1
]}

HEYDE, K ^{[1
]}

机构：

[1] INST THEORET PHYS,B-9000 GHENT,BELGIUM

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.66.2456

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A magnetic dipole spin resonance around 6-8 MeV is described for rare-earth nuclei, ranging from Ce-142 to Pt-198. Starting from an unperturbed basis of K-pi = 1+ two-quasiparticle states, constructed within the Nilsson model and applying the BCS formalism, one can quantitatively estimate the total spin M1 strength. We include Coriolis mixing and residual quadrupole and spin separable forces and study the spin resonance in more detail for a few representative examples, Nd-148, Sm-154, Dy-164, and Yb-174. A double-humped structure in the spin M1 strength around 6-8 MeV results from the calculations, and is found to be related to separate proton and neutron spin-flip excitations.

引用

页码：2456 / 2459

页数：4

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