engleski

Beta-decay of odd-A As to Ge isotopes in the interacting boson-fermion model

The structure of odd-mass isotopes of As and Ge is described in the framework of the proton-neutron interacting boson-fermion model. The energy levels and the electromagnetic properties of 69, 71, 73As and 69, 71, 73Ge are calculated and compared with the experiment. The beta-decay rates from the As isotopes to the Ge isotopes are calculated. The calculated decays tend to be stronger than the observed ones. This may indicate a mixture of components outside the model space in the wave functions of actual nuclei. The effect of the higher-order terms in the decay operators seems small.

beta-decay; nuclei with mass number 59 to 89; interacting boson approximation; nuclear energy level transitions; wave functions; nuclear energy levels

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