Fragmentation of the two-octupole phonon multiplet in 208Pb

被引：30

作者：

Ponomarev, VY ^{[1
]}

von Neumann-Cosel, P ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.82.501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The properties of the lowest two-phonon states in Pb-208 built On the collective octupole vibration are studied within the quasiparticle phonon model. Calculations including up to three-phonon coupling yield a strong fragmentation of the 6(+) member of the multiplet, explaining the failure of recent heavy ion Coulomb excitation experiments used to observe this state. Some splitting of the 2(+) strength is predicted while the 0(+) and 4(+) members remain relatively pure. The present results also question the proposed signature for the two-octupole states of enhanced El decays to one-phonon states. [S0031-9007(98)08236-2].

引用

页码：501 / 504

页数：4

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