Spins, parity, excitation energies, and octupole structure of an excited superdeformed band in Hg-194 and implications for identical bands

被引：108

作者：

Hackman, G

Khoo, TL

Carpenter, MP

Lauritsen, T

LopezMartens, A

Calderin, IJ

Janssens, RVF

Ackermann, D

Ahmad, I

Agarwala, S

Blumenthal, DJ

Fischer, SM

Nisius, D

Reiter, P

Young, J

Amro, H

Moore, EF

Hannachi, F

Korichi, A

Lee, IY

Macchiavelli, AO

Dossing, T

Nakatsukasa, T

机构：

[1] CTR SPECTROMETRIE NUCL & SPECTROMETRIE MASSE,CNRS,IN2P3,F-91405 ORSAY,FRANCE

[2] N CAROLINA STATE UNIV,RALEIGH,NC 27695

[3] TUNL,DURHAM,NC 27708

[4] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[5] NIELS BOHR INST,DK-2100 COPENHAGEN O,DENMARK

[6] UMIST,MANCHESTER M60 1QD,LANCS,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.79.4100

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An excited superdeformed band in Hg-194, observed to decay directly to both normal-deformed and superdeformed yrast states, is proposed to be a K-pi = 2(-) octupole vibrational band, based on its excitation energies, spins, and likely parity. The transition energies are identical to those of the yrast superdeformed band in Hg-192, but originate from levels with different spins and parities. The evolution of transition energies with spin suggests that cancellations between pairing and particle alignment are partly responsible for the identical transition energies.

引用

页码：4100 / 4103

页数：4

共 35 条

[1]

AMRO H, IN PRESS, P14315

[2] IDENTICAL BANDS IN DEFORMED AND SUPERDEFORMED NUCLEI [J].

BAKTASH, C ;

HAAS, B ;

NAZAREWICZ, W .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 1995, 45 :485-541

[3] ON THE QUESTION OF SPIN FITTING AND QUANTIZED ALIGNMENT IN ROTATIONAL BANDS [J].

BAKTASH, C ;

NAZAREWICZ, W ;

WYSS, R .

NUCLEAR PHYSICS A, 1993, 555 (02) :375-407

[4] LEVEL SPIN FOR SUPERDEFORMED NUCLEI NEAR A = 194 [J].

BECKER, JA ;

HENRY, EA ;

KUHNERT, A ;

WANG, TF ;

YATES, SW ;

DIAMOND, RM ;

STEPHENS, FS ;

DRAPER, JE ;

KORTEN, W ;

DELEPLANQUE, MA ;

MACCHIAVELLI, AO ;

AZAIEZ, F ;

KELLY, WH ;

CIZEWSKI, JA ;

BRINKMAN, MJ .

PHYSICAL REVIEW C, 1992, 46 (03) :889-903

[5] AVERAGE-RESONANCE METHOD OF NEUTRON-CAPTURE GAMMA-RAY SPECTROSCOPY - STATES OF PD-106, GD-156, GD-158, HO-166, AND ER-168 [J].

BOLLINGER, LM ;

THOMAS, GE .

PHYSICAL REVIEW C, 1970, 2 (05) :1951-+

[6]

BOUNEAU S, 1996, P C NUCL STRUCT LIM, P105

[7] Intrinsic reflection asymmetry in atomic nuclei [J].

Butler, PA ;

Nazarewicz, W .

REVIEWS OF MODERN PHYSICS, 1996, 68 (02) :349-421

[8] SUPERDEFORMED BAND WITH A UNIQUE DECAY PATTERN - POSSIBLE EVIDENCE FOR OCTUPOLE VIBRATION IN HG-160 [J].

CROWELL, B ;

JANSSENS, RVF ;

CARPENTER, MP ;

AHMAD, I ;

HARFENIST, S ;

HENRY, RG ;

KHOO, TL ;

LAURITSEN, T ;

NISIUS, D ;

WILSON, AN ;

SHARPEYSCHAFER, JF ;

SKALSKI, J .

PHYSICS LETTERS B, 1994, 333 (3-4) :320-325

[9] SPINS IN SUPERDEFORMED BANDS IN THE MASS 190 REGION [J].

DRAPER, JE ;

STEPHENS, FS ;

DELEPLANQUE, MA ;

KORTEN, W ;

DIAMOND, RM ;

KELLY, WH ;

AZAIEZ, F ;

MACCHIAVELLI, AO ;

BEAUSANG, CW ;

RUBEL, EC ;

BECKER, JA ;

ROY, N ;

HENRY, EA ;

BRINKMAN, MJ ;

KUHNERT, A ;

YATES, SW .

PHYSICAL REVIEW C, 1990, 42 (05) :R1791-R1795

[10] THE INFLUENCE OF PAIRING ON THE PROPERTIES OF IDENTICAL SUPERDEFORMED BANDS IN HG NUCLEI [J].

FALLON, P ;

NAZAREWICZ, W ;

RILEY, MA ;

WYSS, R .

PHYSICS LETTERS B, 1992, 276 (04) :427-431

← 1 2 3 4 →