Kinetic approach to the damping of giant quadrupole resonances

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.42.966· OSTI ID:6482138

Bonasera, A; Di Toro, M; Gulminelli, F ^[1]

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1. Istituto Nazionale di Fisica Nucleare, Corso Italia 57, 95129 Catania (Italy) Dipartimento di Fisica, Corso Italia 57, 95129 Catania (Italy) Dipartimento di Fisica, Via Celoria 16, 20133 Milano (Italy) Laboratorio Nazionale del Sud, Viale A. Doria, 95125 Catania (Italy)

The effect of one- and two-body dissipation on the damping of giant quadrupole resonances is studied in a semiclassic approach solving a Vlasov equation with a collisional relaxation time. The latter is microscopically evaluated from the equilibration of a distorted momentum distribution in a kinetic approach. Important effects from energy and angle dependent nucleon-nucleon ({ital NN}) cross sections and from the time variation of Pauli blocking are stressed. Once these points are suitably treated, a good agreement with the experimental systematics is obtained from the use of a free {ital NN} cross section.

• OSTI ID: 6482138
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 42:3; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BOLTZMANN-VLASOV EQUATION
COLLECTIVE MODEL
CROSS SECTIONS
DIFFERENTIAL EQUATIONS
ENERGY DEPENDENCE
EQUATIONS
GIANT RESONANCE
HADRON-HADRON INTERACTIONS
INTERACTIONS
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MATHEMATICAL SPACE
NUCLEAR MODELS
NUCLEON-NUCLEON INTERACTIONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE INTERACTIONS
PAULI PRINCIPLE
PHASE SPACE
QUADRUPOLE MOMENTS
RELAXATION TIME
RESONANCE
SEMICLASSICAL APPROXIMATION
SPACE
TIME DEPENDENCE
TWO-BODY PROBLEM