Spectroscopy of the 21+ state in 22O and shell structure near the neutron drip line

被引：121

作者：

Thirolf, PG ^{[1
]}

Pritychenko, BV

Brown, BA

Cottle, PD

Chromik, M

Glasmacher, T

Hackman, G

Ibbotson, RW

Kemper, KW

Otsuka, T

Riley, LA

Scheit, H

机构：

[1] Univ Munich, D-85748 Garching, Germany

[2] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[4] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

[5] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[6] RIKEN, Wako, Saitama 3510198, Japan

[7] Earlham Coll, Dept Phys & Astron, Richmond, IN 47374 USA

来源：

PHYSICS LETTERS B | 2000年 / 485卷 / 1-3期

关键词：

D O I：

10.1016/S0370-2693(00)00720-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The energy and electromagnetic matrix element B(E2 up arrow) for the 2(1)(+) state in O-22 have been determined via inelastic scattering of a beam of these radioactive nuclei from a Au-197 target. These results provide strong evidence for the existence of the N = 14 subshell closure in O-22. This demonstrates that the shell structure in O-22 is similar to that of stable oxygen isotopes, even though this nucleus is only two neutrons away from the neutron drip line. These results are reproduced in the standard sd shell model as well as with a an expanded space which also includes the f(7/2) and p(3/2) orbitals. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：16 / 22

页数：7

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