Quasiparticle description for indium

Quasiparticle model has been applied for the description of the nuclear properties of the low-lying states of In isotopes. The Hamiltonian is diagonalized in the space obtained by coupling zero-and two-quasineutron configurations with the proton-hole states in N=Z=50 core, using renormalized Tabakin interaction. The inclusion of two-hole one-particle proton configurations, consistent with the experimental findings in₄₈¹¹⁴Cd(³He, d)₄₉¹¹⁵In reaction, in a weak coupling approximation in which the quasineutron excitation modes are first generated independently, and then coupled to the proton hole excitations to obtain the configuration space for the diagonalization work, is also studied quantitatively. The energy spectrum of the¹¹⁵In nucleus is calculated and discussed.