Monopole migration in 69,71,73Cu observed from β decay of laser-ionized 68-74Ni -: art. no. 054308

被引：85

作者：

Franchoo, S

Huyse, M

Kruglov, K

Kudryavtsev, Y

Mueller, WF

Raabe, R

Reusen, I

Van Duppen, P

Van Roosbroeck, J

Vermeeren, L

Wöhr, A

Grawe, H

Kratz, KL

Pfeiffer, B

Walters, WB

机构：

[1] Katholieke Univ Leuven, Inst Kern & Stralingsfys, B-3001 Louvain, Belgium

[2] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany

[3] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[4] Univ Maryland, Dept Chem, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW C | 2001年 / 64卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.64.054308

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The neutron-rich isotopes Ni68-74 have been produced at the LISOL facility in the fission of U-238 induced by a 30-MeV proton beam. They have been extracted selectively through resonant laser ionization and electromagnetic mass separation. Production rates have been deduced and deviate from theoretical predictions. The beta decay of the isotopes has been investigated by means of beta-gamma and gamma-gamma spectroscopy. Half-lives have been determined for Ni68-74, and the level scheme has been extended for Cu-69 and newly established for Cu-71.73. The constructed schemes show an unexpected and sharp lowering of the pif(5/2) orbital with respect to the pip(3/2) ground state. This feature is ascribed to the monopole term of the residual proton-neutron interaction and is well reproduced by realistic shell-model calculations.

引用

页码：543081 / 5430813

页数：13

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