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arXiv · 1405.0254

Finite Amplitude Method for Charge-Changing Transitions in Axially-Deformed Nuclei

M. T. Mustonen·T. Shafer·Z. Zenginerler·J. Engel
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Abstract

We describe and apply a version of the finite amplitude method for obtaining the charge-changing nuclear response in the quasiparticle random phase approximation. The method is suitable for calculating strength functions and beta-decay rates, both allowed and forbidden, in axially-deformed open-shell nuclei. We demonstrate the speed and versatility of the code through a preliminary examination of the effects of tensor terms in Skyrme functionals on beta decay in a set of spherical and deformed open-shell nuclei. Like the isoscalar pairing interaction, the tensor terms systematically increase allowed beta-decay rates. This finding generalizes previous work in semimagic nuclei and points to the need for a comprehensive study of time-odd terms in nuclear density functionals.

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M. T. Mustonen, T. Shafer, Z. Zenginerler, J. Engel. 2014-05-01. Finite Amplitude Method for Charge-Changing Transitions in Axially-Deformed Nuclei. https://doi.org/10.1103/physrevc.90.024308

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