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]

---

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), Vol. 42:3; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

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