High-spin states in 156Yb and structure evolutions at large angular momenta in even-A Yb isotopes

被引：13

作者：

Li, Z. Y. ^{[1
,2
]}

Hua, H. ^{[1
,2
]}

Wang, S. Y. ^{[1
,2
]}

Meng, J. ^{[1
,2
]}

Li, Z. H. ^{[1
,2
]}

Li, X. Q. ^{[1
,2
,5
]}

Xu, F. R. ^{[1
,2
]}

Liu, H. L. ^{[1
,2
]}

Zhang, S. Q. ^{[1
,2
]}

Ye, Y. L. ^{[1
,2
]}

Jiang, D. X. ^{[1
,2
]}

Zheng, T. ^{[1
,2
]}

Ma, L. Y. ^{[1
,2
]}

Lu, F. ^{[1
,2
]}

Fan, F. Y. ^{[1
,2
]}

Han, L. Y. ^{[1
,2
]}

Wang, H. ^{[1
,2
]}

Xiao, J. ^{[1
,2
]}

Chen, D. ^{[1
,2
]}

Fang, X. ^{[1
,2
]}

Lou, J. L. ^{[1
,2
]}

Zhou, S. G. ^{[3
,4
]}

Zhu, L. H. ^{[5
]}

Wu, X. G. ^{[5
]}

Li, G. S. ^{[5
]}

He, C. Y. ^{[5
]}

Liu, Y. ^{[5
]}

Li, X. Q. ^{[1
,2
,5
]}

Hao, X. ^{[5
]}

Pan, B. ^{[5
]}

Li, L. H. ^{[5
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China

[4] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China

[5] China Inst Atom Energy, Beijing 102413, Peoples R China

来源：

PHYSICAL REVIEW C | 2008年 / 77卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.77.064323

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：

High-spin states of Yb-156 have been studied via the Sm-144(O-16,4n)Yb-156 fusion-evaporation reaction at beam energy 102 MeV. The positive-parity yrast band and negative-parity cascade have been extended up to higher-spin states, respectively. In the present work, the negative-parity sequence above the 25(-) state was found to be irregular and fragment into many parallel branches. This pattern may related to the excitation from the nucleon in the Z=64,N=82 core. The characteristics of alignment plot and E-GOS curve for the positive-parity yrast sequence in Yb-156 indicate that this nucleus may undergo an evolution from quasivibrational to quasirotational structure with increasing angular momentum. Based on a systematic summary of the available experimental alignments for the even-A Yb-156,Yb-158,Yb-160,Yb-162,Yb-164 isotopes, the structural evolutions induced by the increase in angular momentum, as well as by the change in neutron numbers, in these even-A Yb isotopes have been discussed in comparison with the cranked Woods-Saxon-Strutinsky calculations by means of total-Routhian-surface (TRS) methods.

引用

页数：9

共 39 条

[1] New shape minimum in 160Yb:: Evidence for a triaxial, strongly deformed band
Aguilar, A.
Campbell, D. B.
Chandler, K.
Pipidis, A.
Riley, M. A.
Teal, C.
Simpson, J.
Hartley, D. J.
Kondev, F. G.
Clark, R. M.
Cromaz, M.
Fallon, P.
Lee, I. Y.
Macchiavelli, A. O.
Ragnarsson, I.
[J]. PHYSICAL REVIEW C, 2008, 77 (02):
[2] IRREGULARITIES IN SIDE-FEEDING PATTERNS, ENERGIES, AND MULTIPOLARITIES IN THE ER-154 YRAST CASCADE TO SPIN-36
BAKTASH, C
DERMATEOSIAN, E
KISTNER, OC
SUNYAR, AW
[J]. PHYSICAL REVIEW LETTERS, 1979, 42 (10) : 637 - 640
[3] QUASIVIBRATIONAL BANDS AT HIGH SPINS IN YB-158
BAKTASH, C
SCHUTZ, Y
LEE, IY
MCGOWAN, FK
JOHNSON, NR
HALBERT, ML
HENSLEY, DC
FEWELL, MP
COURTNEY, L
LARABEE, AJ
RIEDINGER, LL
SUNYAR, AW
DERMATEOSIAN, E
KISTNER, OC
SARANTITES, DG
[J]. PHYSICAL REVIEW LETTERS, 1985, 54 (10) : 978 - 981
[4] Baktash C., 1983, P C HIGH ANG MOM PRO, P207
[5] INTERPRETATION OF BACKBENDING IN TERMS OF THE CROSSING OF THE GROUND-STATE BAND WITH AN ALIGNED 2-QUASI-PARTICLE BAND
BENGTSSON, R
FRAUENDORF, S
[J]. NUCLEAR PHYSICS A, 1979, 314 (01) : 27 - 36
[6] GAMMA-RAY SPECTROSCOPY OF SUPERDEFORMED STATES IN THE NUCLEUS DY-152
BENTLEY, MA
ALDERSON, A
BALL, GC
CRANMERGORDON, HW
FALLON, P
FANT, B
FORSYTH, PD
HERSKIND, B
HOWE, D
KALFAS, CA
MOKHTAR, AR
MORRISON, JD
NELSON, AH
NYAKO, BM
SCHIFFER, K
SHARPEYSCHAFER, JF
SIMPSON, J
SLETTEN, G
TWIN, PJ
[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1991, 17 (04) : 481 - 510
[7] HIGH-SPIN STATES IN HF-163-166
BLUME, KP
HUBEL, H
MURZEL, M
RECHT, J
THEINE, K
KLUGE, H
KUHNERT, A
MAIER, KH
MAJ, A
GUTTORMSEN, M
DELIMA, AP
[J]. NUCLEAR PHYSICS A, 1987, 464 (03) : 445 - 471
[8] GAMMA-SPECTROSCOPY WITHIN THE ISLAND OF HIGH-SPIN ISOMERS NEAR N=82
BORGGREEN, J
BJORNHOLM, S
CHRISTENSEN, O
DELZOPPO, A
HERSKIND, B
PEDERSEN, J
SLETTEN, G
FOLKMANN, F
SIMON, RS
[J]. ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1980, 294 (02): : 113 - 124
[9] SEARCH FOR CORRELATIONS BETWEEN PROLATE-SHAPE COLLECTIVE AND OBLATE-SHAPE NON-COLLECTIVE NUCLEAR ROTATION - HIGH-SPIN STATES IN YB-159, YB-160
BYRSKI, T
BECK, FA
MERDINGER, JC
NOURREDDINE, A
CRANMERGORDON, HW
ELENKOV, DV
FORSYTH, PD
HOWE, D
RILEY, MA
SHARPEYSCHAFER, JF
SIMPSON, J
DUDEK, J
NAZAREWICZ, W
[J]. NUCLEAR PHYSICS A, 1987, 474 (01) : 193 - 218
[10] High-spin excitations in 158,159,160Hf from recoil-decay tagging -: art. no. 034316
Ding, KY
Cizewski, JA
Seweryniak, D
Amro, H
Carpenter, MP
Davids, CN
Fotiades, N
Janssens, RVF
Lauritsen, T
Lister, CJ
Nisius, D
Reiter, P
Uusitalo, J
Wiedenhöver, I
Macchiavelli, AO
[J]. PHYSICAL REVIEW C, 2000, 62 (03): : 14

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