Pauli-blocking in the quasideuteron model of photoabsorption

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.44.814· OSTI ID:5183955

Chadwick, M B ^[1]; Oblozinsky, P; Hodgson, P E ^[2]; Reffo, G ^[3]

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1. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico (USA)
2. Nuclear Physics Laboratory, University of Oxford, Oxford OX13RH (United Kingdom)
3. Ente Nazionale Energie Alternative, 40138 Bologna (Italy)

We calculate the effects of Pauli-blocking in the quasideuteron model of hard photon absorption. Our approach is based upon phase-space considerations and uses Fermi-gas state densities that conserve linear momentum. The Pauli-blocking function that we obtain differs from Levinger's phenomenological exponential factor and yields nuclear photoabsorption cross sections that are in good agreement with experimental data for photon energies up to the pion threshold. The temperature dependence of the nuclear photoabsorption cross section in the quasideuteron regime is also investigated. The model that we use to describe nuclear photoabsorption is particularly suited for application to preequilibrium models of hard photon emission.

• OSTI ID: 5183955
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 44:2; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001 -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CAPTURE
CHARGED PARTICLES
CROSS SECTIONS
DEUTERONS
ELEMENTARY PARTICLES
ENERGY
ENERGY LEVELS
FERMI GAS MODEL
FERMI LEVEL
HADRONS
LEVINGER-BETHE THEORY
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MESONS
NUCLEAR MODELS
NUCLEAR REACTIONS
PAULI PRINCIPLE
PHASE SPACE
PHOTONUCLEAR REACTIONS
PIONS
PRECOMPOUND-NUCLEUS EMISSION
PSEUDOSCALAR MESONS
QUASI PARTICLES
SPACE
TEMPERATURE DEPENDENCE
THRESHOLD ENERGY