Fast-phonon induced broadening of single-particle lines in excited nuclear matter
A modified kinetic equation for nuclear matter, whose generator of irreversible motion contains a contribution from coupling to a fast collective mode in addition to the usual kinetic kernel, is examined. The fermionic collision rates are evaluated in the relaxation-time approximation, assuming a fi...
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| Autores principales: | , |
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| Formato: | JOUR |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_05562813_v29_n4_p1523_Dorso |
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| Sumario: | A modified kinetic equation for nuclear matter, whose generator of irreversible motion contains a contribution from coupling to a fast collective mode in addition to the usual kinetic kernel, is examined. The fermionic collision rates are evaluated in the relaxation-time approximation, assuming a finite amount of excitation is transferred from collective motion to the single-particle degrees of freedom in the form of a temperature increase. Both energy and angular dependence of the collision frequencies are discussed. [NUCLEAR STRUCTURE Modified kinetic equation; fermion-boson coupling; intrinsic kinetics; phonon-induced kinetics; total collision rate; resonance decay; finite temperature in nuclear matter; distortion of the Fermi sphere.] © 1984 The American Physical Society. |
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