摘要
讨论了奇奇核超形变旋称伙伴带中的ΔＩ＝１颤动现象．采用光滑化的Ｙ跃迁能量（即扣除去振荡起伏部分），系统地讨论了Ａ＝１９０区奇奇核超形变带的自旋值。旋称伙伴带的ΔＩ＝１颤动现象的存在，对奇奇核超形变带的自旋指定没有影响。
The influence of the fluctuation in γ-transition energies and the I=1staggering on the spin assignment of superdeformed band is inveshgated for thedoubly odd nuclei in mass A ≈ 190 region. The extracted fluctuations in γ-transihonenergies are not too large, implying a weak innuence on their spin assignments exceptfor the fitting parameters and precisions. In addition, the I= staggering insuperdeformed signature partner pairs of doubly odd nuclei behaves differently fromthat in odd-A nuclei and can be understood in the framework of the collechve model.The existence of I =1 staggering also exefts no influence on the spin assignmentexcept for a renormalizahon of fithng parameters. A modified ab-expresion valid indoubly odd nuclei is proPOsed. The smoothed ti'ansihon energies are employed toassign the spins of these superdeformed bands by the ah-fliting and itS modification.
出处
《高能物理与核物理》
CSCD
北大核心
1999年第12期1209-1215,共7页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金!19677203
关键词
超形变带
△I=I颤动
自旋指定
奇奇核
superdeformed band
I=1 staggering
smoothed γ-transtion energies
spin assignment ab-expresion and its modification
