SHEARS BANDS IN PB199 AND PB-200

被引:144
作者
BALDSIEFEN, G
HUBEL, H
KORTEN, W
MEHTA, D
NENOFF, N
RAO, BVT
WILLSAU, P
GRAWE, H
HEESE, J
KLUGE, H
MAIER, KH
SCHUBART, R
FRAUENDORF, S
MAIER, HJ
机构
[1] HAHN MEITNER INST KERNFORSCH,D-14109 BERLIN,GERMANY
[2] UNIV DELHI,VALLABHBHAI PATEL CHEST INST,DEPT PHYS & ASTRON,DELHI 110007,INDIA
[3] FORSCHUNGSZENTRUM ROSSENDORF,D-01474 DRESDEN,GERMANY
[4] UNIV MUNICH,D-85748 GARCHING,GERMANY
[5] ANDHRA UNIV,DEPT NUCL PHYS,WALTAIR 530003,ANDHRA PRADESH,INDIA
关键词
W-86(O-18; CHI-N); E = 94 MEV; OS-192(C-12; 5N); E = 82 MEV; OS-192(C-13; 6N); E=81-MEV AND OS-192(C-13; E = 76 MEV; MEASURED GAMMA-GAMMA-COIN; E(GAMMA; GAMMA-GAMMA(THETA); PB-199; PB-200 DEDUCED LEVELS; J; PI; ROTATIONAL BANDS; COMPTON-SUPPRESSED GE DETECTORS; BGO DETECTORS; TILTED-AXIS CRANKING CALCULATIONS;
D O I
10.1016/0375-9474(94)90243-7
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 in 199Pb and 200Pb have been investigated by in-beam gamma-ray spectroscopy using several different reactions. In addition to an extension of the spherical level scheme, eight (possibly ten) regular sequences of dipole transitions are found. They are built on oblate proton 2p2h states that are coupled to neutron i13/2 excitations. The experimental results are compared to tilted-axis cranking calculations. A new way of generating regular bands is suggested, that combines collective rotation with a continuous and simultaneous reorientation of neutron and proton spins into the direction of the total angular momentum.
引用
收藏
页码:521 / 558
页数:38
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