What question did this study set out to answer?

The aim is to understand seniority states in Yttrium isotopes around the N=50 shell gap using shell model calculations.

June 3, 20260 citations

Shell Model interpretation of seniority states in Yttrium isotope around N=50 shell gap

Key Points

The aim is to understand seniority states in Yttrium isotopes around the N=50 shell gap using shell model calculations.
Conducted large basis shell model calculations with jun45pn and snt effective interactions.
Compared calculated excitation energies with available experimental data.
Examined wavefunctions and seniority of selected states.
Satisfactory agreement found with jun45pn interaction in low-energy region.
Inclusion of neutron-core excitation necessary for high-energy, high-spin states
snt interaction showed improved accuracy in describing high-energy levels.

Abstract

The yrast states of 89Y have been investigated using large basis shell model calculation with two different effective interactions defined in different model spaces. The calculated excitation energies have been compared with available experimental data. A satisfactory agreement is observed with the jun45pn interaction in the low-energy region. Whereas the inclusion of neutron-core excitation becomes essential to describe high-energy, high-spin states. Calculation using the snt interaction shows improved agreement in describing these states. The wavefunction and seniority of a few states are discussed.

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