NUCLEAR-STRUCTURE STUDIES IN MO AND NB ISOTOPES VIA STRIPPING REACTIONS AT 12 MEV

被引:129
作者
MOORHEAD, JB
MOYER, RA
机构
[1] Department of Physics, University of Pittsburgh, Pittsburgh
[2] Nuclear Defense Laboratory, Edgewood Arsenal, MD
来源
PHYSICAL REVIEW | 1969年 / 184卷 / 04期
关键词
D O I
10.1103/PhysRev.184.1205
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Proton energy spectra from (d,p) reactions induced by 12-MeV deuterons on targets of Mo92, Mo94, Mo98, and Nb93 were measured with 7-9-keV resolution. Angular distributions of proton groups in the spectra were used to determine the l values of the transitions yielding the respective proton groups. In reactions on the Mo isotopes, all of the expected strength is found for transitions leading to s12, d32, and d52 states. In contrast with the situation in the isotonic Zr isotopes, where no h112 states are known, one h112 state is found in each odd-A Mo isotope; however, in each case the excitation strength is only a small fraction of the expected total for that level. The total excitation strength for the g72 level is also far below the expected total, and there is no evidence that this level is filling in the Mo isotopes as neutrons are added. In Nb94, values of I for several members of the (πg92) (νd52) and (πg92) (νg72) configurations are estimated from sum rules and the presence of mixing. © 1969 The American Physical Society.
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页码:1205 / &
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