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Parity Dependence of Nuclear Level Densities

Y. Alhassid·G. F. Bertsch·S. Liu·H. Nakada
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Abstract

A simple formula for the ratio of the number of odd- and even-parity states as a function of temperature is derived. This formula is used to calculate the ratio of level densities of opposite parities as a function of excitation energy. We test the formula with quantum Monte Carlo shell model calculations in the $(pf+g_{9/2})$-shell. The formula describes well the transition from low excitation energies where a single parity dominates to high excitations where the two densities are equal.

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Y. Alhassid, G. F. Bertsch, S. Liu, H. Nakada. 1999-11-09. Parity Dependence of Nuclear Level Densities. https://doi.org/10.1103/physrevlett.84.4313

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