First evidence for triaxial superdeformation in 168Hf

被引：67

作者：

Amro, H ^{[1
]}

Varmette, PG

Ma, WC

Herskind, B

Hagemann, GB

Sletten, G

Janssens, RVF

Bergström, M

Bracco, A

Carpenter, M

Domscheit, J

Frattini, S

Hartley, DJ

Hübel, H

Khoo, TL

Kondev, F

Lauritsen, T

Lister, CJ

Million, B

Odegård, SW

Piercey, RB

Riedinger, LL

Schmidt, KA

Siem, S

Wiedenhöver, I

Wilson, JN

Winger, JA

机构：

[1] Mississippi State Univ, Dept Phys & Astron, Mississippi State, MS 39762 USA

[2] Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[3] Argonne Natl Lab, Argonne, IL 60439 USA

[4] Univ Milan, Dipartimento Fis, I-20122 Milan, Italy

[5] Univ Bonn, Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[6] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[7] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

来源：

PHYSICS LETTERS B | 2001年 / 506卷 / 1-2期

关键词：

triaxial superdeformed structures; lifetime measurements; potential energy surface calculations;

D O I：

10.1016/S0370-2693(01)00369-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Three superdeformed (SD) bands have been found in Hf-168. Lifetime measurements revealed a large quadrupole moment, Q(t) similar to 11.4 e b, for the strongest band (TSD1). Theoretical calculations using the Ultimate Cranker code predict high-spin SD minima (epsilon (2) similar to 0.43) with stable triaxial deformations of gamma similar to +20 degrees and gamma similar to -15 degrees. The measured Q(t) value suggests that band TSD1 corresponds, most likely, to a deformation with a positive gamma value. This constitutes the first evidence for triaxial superdeformation in an even proton system. (C) 2001 Published by Elsevier Science B.V.

引用

页码：39 / 44

页数：6

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