Signature splitting in magnetic rotational bands

被引：6

作者：

Amita ^{[1
]}

Jain A.K. ^{[1
]}

Goel A. ^{[2
]}

Singh B. ^{[3
]}

机构：

[1] Department of Physics, University of Roorkee

[2] Career Inst. of Technol. and Mgmt., Faridabad

[3] Department of Physics and Astronomy, McMaster University, Hamilton, Ont.

来源：

Pramana | 1999年 / 53卷 / 3期

关键词：

Magnetic rotation; shears mechanism; nearly spherical nuclei; signature splitting; Pb isotopes; particle rotor model; 21.60; 27.80+w;

D O I：

10.1007/s12043-999-0016-9

中图分类号：

学科分类号：

摘要：

Nearly-spherical nuclei in three mass regions have recently been observed to exhibit rotational-like features. We have identified almost 80 such bands; largest number (43) lie in the lead region. Most of these bands are assigned oblate multi-quasiparticle configurations. Their interpretation in terms of `magnetic rotation' does not allow for signature splitting in these bands. We have however found signature splitting as well as signature inversion in many bands. We apply the two-quasiparticle plus rotor model to understand the occurrence of signature splitting vis-a-vis the role of `shears mechanism' in these bands.

引用

页码：463 / 468

页数：5

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