Identification of Collective Oblate Bands in 138Ce * ZHU Sheng-jiang(%@,E)', LI Ming(%m)', ZHU Ling-yan(%&@B)', GAN C u i -y u n ( g S Z ) ' , M. Sakhaee(

WEN Shu-xian(B*!@$)', LU Jing-bin(pSiB%€)2, YUAN G u a n -j u n ( a a @ ) ' , YANG Chun-xiang(&%#)'

High spin states in neutron-deficient '17Xe have been studied by using in-beam 7 spectroscopy method. A new positive-parity rotational band has been identified. It decays into the yrast uhlllz band via five electric dipole transitions. The magnitudes of these E l transitions are extracted and they are much enhanced compared to the normal El transitions. This is taken as an evidence for octupole correlations in 'I7Xe.

Collective Behavior of Negative Parity States in "'Ba at High Spin * LI Guang-sheng($r&), DAI Zheng-yu($&aF), LIU Xiang-an(AlJ#g), ZHANG Lan-kuan(?&S%), WEN S h u -x i a n ( g 3 g), WU Xiao-guang(g@%), YUAN Guan-jun("aR@), WENG Pei-kun($jfe,&), LI Sheng-gang(%& g), YANG Chun-xiang(&%#)

Quadrupole Moment of the h l l p Quasineutron Band in 12'Ce * LI Guang-sheng(qr!&), DAI Zheng-yu(%@?), LIU xiang-an(%g#%), ZHANG Lan-kuan( %s:W), WEN Shu-xian(%*!@), WU Xiao-guang( SI@%), YUAN Guan-jun( SjR@), WENG Pei-kun(%@%), LI Sheng-gang(q& E), YANG Chun-xiang(%%#)