The lifetimes for the high spin levels of the yrast band of 110 Cd has been measured. The estimated B(E2) values decrease with increase in angular momentum. This is the characteristic of Anti magnetic rotation as reported in 106,108 Cd. However, alignment behavior of 110 Cd is completely different from its even-even neighbors. A model based on classical particle plus rotor has been used to explore the underlying systematics and develop a self consistent picture for the observed behavior of these isotopes.
Heavy-ion fusion reactions 122 Sn( 14,15 N, xn) 132 La have been utilized for the lifetime measurements using the recoil distance method. The lifetimes of seven low-lying excited states were obtained. In addition, the lifetimes of two states belonging to a band, which was identified as a decoupled band, were obtained. The decoupling behavior in 132 La has been theoretically investigated using the particle-rotor model in the model space of πh 11/2 and (νs 1/2 , νd 3/2 ). The pseudospin coupling model was also utilized to understand the decoupling behavior in terms of the valence-particle configuration πh 11/2 ( π = 1 2 ) ⊗ ν[ 411]( ν = 1 2 , 3 2 ), and a reasonable agreement with the experiment was obtained.
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