<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Xu Chuan</style></author><author><style face="normal" font="default" size="100%">Hua Hui</style></author><author><style face="normal" font="default" size="100%">Li Xiangqing</style></author><author><style face="normal" font="default" size="100%">Zhang Shuangquan</style></author><author><style face="normal" font="default" size="100%">Xu Furong</style></author><author><style face="normal" font="default" size="100%">Shi Yue</style></author><author><style face="normal" font="default" size="100%">Zhu Lihua</style></author><author><style face="normal" font="default" size="100%">Wu Xiaoguang</style></author><author><style face="normal" font="default" size="100%">Li Guangsheng</style></author><author><style face="normal" font="default" size="100%">He Chuangye</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Shape Co-Existence in the Transitional Nuclide 157 Yb</style></title><secondary-title><style face="normal" font="default" size="100%">Plasma Science and Technology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://stacks.iop.org/1009-0630/14/i=6/a=16</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">6</style></number><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">510</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">High-spin states in 157 Yb have been populated in the 144 Sm( 16 O, 3n) 157 Yb fusion-evaporation reaction at a beam energy of 85 MeV, and two rotational bands have been established for the first time. Within the framework of the triaxial particle-rotor model, the energy spectra and single-particle configurations of 157 Yb are investigated. The calculated energy spectra agree well with the experimental data. The newly observed ν f 7/2 band, and the previously known ν i 13/2 band in 157 Yb, are also discussed by means of Total-Routhian-Surface methods. The structural characters observed in 157 Yb provide evidence for the shape coexistence of three distinct shapes: prolate, triaxial and oblate. At higher spins, both the ν f 7/2 band and the ν i 13/2 band in 157 Yb undergo a shape evolution with sizable alignments occurring.</style></abstract></record></records></xml>