摘要
High-spin states in ^126Te have been investigated by using in-beam γ ray spectroscopy with the ^124Sn（^7Li,1p4n）^126Te reaction at a beam energy of 48 MeV.The previously known level scheme has been enriched,and a new negative-parity sequence has been established.The yrast positive-parity band shows a shape change between triaxial shape and collective oblate shape as a function of spin.In particular,three competitive minima appear in the potential energy surface for the I^π=8^＋ states,with one aligned state at γ =-120° and two triaxial states atγ -30° and-45°,respectively.The signature splitting behavior of the negative-parity band is discussed.The shape change with increasing angular momentum and the signature splitting can be interpreted well in terms of the Cranked Nilsson-Strutinsky-Bogoliubov and Cranked Nilsson-Strutinsky model calculations.
High-spin states in ^126Te have been investigated by using in-beam γ ray spectroscopy with the ^124Sn（^7Li,1p4n）^126Te reaction at a beam energy of 48 MeV.The previously known level scheme has been enriched,and a new negative-parity sequence has been established.The yrast positive-parity band shows a shape change between triaxial shape and collective oblate shape as a function of spin.In particular,three competitive minima appear in the potential energy surface for the I^π=8^＋ states,with one aligned state at γ =-120° and two triaxial states atγ -30° and-45°,respectively.The signature splitting behavior of the negative-parity band is discussed.The shape change with increasing angular momentum and the signature splitting can be interpreted well in terms of the Cranked Nilsson-Strutinsky-Bogoliubov and Cranked Nilsson-Strutinsky model calculations.
基金
Supported by National Natural Science Foundation of China(11575018,11375023,11305269,11375267,11405274,11205245,10927507,10975191,11075214,11175259,11205068)
