Quasiparticle phonon coupling in the odd-A Te isotopes

Abstract

The odd-A Te isotopes ¹²³Te, ¹²⁵Te, and ¹²⁷Te are studied in a version of the unified vibrational model which incorporates both pairing effects and anharmonicity in the core vibrations. The neutron quasiparticle states in the N=50-82 shell are coupled to anharmonic vibrations of the corresponding even cores. The calculated results are discussed in the light of the recent experimental findings.