A description of odd mass W-isotopes in the Interacting Boson–Fermion model

The negative and positive parity low-spin states of the even–odd Tungsten isotopes, are studied in the frame work of the Interacting Boson–Fermion Approximation (IBFA) model. The fermion that is coupled to the system of bosons is taken to be in the negative parity 2f7/2, 2f5/2, 3p3/2, 3p1/2 and in the positive parity 1i13/2 single-particle orbits. The calculated energies of low-spin energy levels of the odd isotopes are found to agree well with the experimental data. Also B(E2) values and spectroscopic factors for single-neutron transfer are calculated and found to be in good agreement with experimental data.