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Finite Temperature Nuclear Response in Extended Random-Phase Approximation

Denis Lacroix·Philippe Chomaz·Sakir Ayik
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Abstract

The nuclear collective response at finite temperature is investigated for the first time in the quantum framework of the small amplitude limit of the extended TDHF approach, including a non-Markovian collision term. It is shown that the collision width satisfies a secular equation. By employing a Skyrme force, the isoscalar monopole, isovector dipole and isoscalar quadrupole excitations in $^{40}Ca$ are calculated and important quantum features are pointed out. The collisional damping due to decay into incoherent 2p-2h states is small at low temperatures but increases rapidly at higher temperatures.

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Denis Lacroix, Philippe Chomaz, Sakir Ayik. 1998-10-14. Finite Temperature Nuclear Response in Extended Random-Phase Approximation. https://doi.org/10.1103/physrevc.58.2154

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