Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (en)

A. I. Vdovin, A. N. Storozhenko

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, Russia

Abstract: The quasiparticle-phonon nuclear model extended to finite temperature within the framework of the thermo field dynamics is applied to calculate a temperature dependence of the spreading width Γ^↓ of a giant dipole resonance. Numerical calculations are made for ¹²⁰Sn and ²⁰⁸Pb nuclei. It is found that the width Γ^↓ increases with T. The reason of this effect is discussed as well as a relation of the present approach to other ones existing in the literature.

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