M. Waroquier

Unified model calculations for the N = 83 nuclei

G. Vanden Berghe, K. Heyde, M. Waroquier
Nuclear Physics A
165(3), 662–672
1971
A1
Published while none of the authors were employed at the CMM

Abstract 

Level schemes of the N = 83 nuclei 137Xe, 139Ba, 141Ce and 143Nd are obtained in a unified model calculation. Spectroscopic factors for (d, p) reactions are calculated and compared with experimental data. Magnetic dipole and electric quadrupole moments of the ground state are calculated. Some (M1 + E2) transition rates are discussed in 141Ce.

On the nature of the isometric state in the doubly-even N = 82 nuclei

K. Heyde, M. Waroquier, G. Vanden Berghe
Physics Letters B
35(3), 211–213
1971
A1
Published while none of the authors were employed at the CMM

Abstract 

The isomeric state in the doubly-even single closed shell nuclei with N = 82 neutrons has been studied in a quasi-particle model. The lifetime is calculated and compared to the experimental data. Some components of the wave-function of the isomeric state are compared with experimental data from one-nucleon transfer reactions.

Shell-model calculations on the N=82 odd-proton nuclei (II)

K. Heyde, M. Waroquier, A. Buekenhoudt
Nuclear Physics A
167(3), 545–576
1971
A1
Published while none of the authors were employed at the CMM

Abstract 

The quasiparticle Tamm-Dancoff approximation has been applied to a calculation of the low-lying states in single-closed-shell nuclei with N = 82 neutrons. A central force of Gaussian shape with spin exchange is taken as the residual nucleon-nucleon interaction. An extensive study is made of the resemblance with the realistic Elliott interaction. The singleparticle energies are determined by the iterative inverse-gap-equation method. The Hamiltonian matrix is diagonalized in a one- and three-quasiparticle space after elimination of spurious states. Transition rates, half-lifes, magnetic dipole moments and electric quadrupole moments are calculated, discussed in detail and compared with results obtained with the realistic Elliott interaction and the experimental data. The evaluated spectroseopic factors are studied and compared with the experimental one-nucleon transfer data with good quantitative agreement.

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