Hard photon emission in heavy-ion reactions

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.42.2163· OSTI ID:6198389

Fabrici, E; Gadioli, E; Erba, E G; Galmarini, M ^[1]

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1. Dipartimento di Fisica, Universita di Milano, Milano (Italy) Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Milano (Italy)

A number of recent experiments reveal the emission of hard photons in heavy-ion interactions. Assuming that these photons originate in single proton-neutron bremsstrahlung processes that add incoherently, their spectra are satisfactorily reproduced, at incident energies up to {approx}70 MeV/nucleon, in both the case of asymmetric and symmetric systems, by calculations based on a system of master equations. The cross section for the elementary {ital np}{r arrow}{ital n}{prime}{ital p}{prime}{gamma} process is that, recently proposed by Nakayama and Bertsch, which includes convection, magnetic and exchange contributions. The initial energy distribution of the excited particles and holes is assumed to be that corresponding to two shifted Fermi spheres in momentum space.

• OSTI ID: 6198389
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 42:5; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BREMSSTRAHLUNG
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY RANGE
ENERGY SPECTRA
GAMMA SPECTRA
HADRON-HADRON INTERACTIONS
HEAVY ION REACTIONS
INCLUSIVE INTERACTIONS
INELASTIC SCATTERING
INTERACTIONS
MATTER
MEV RANGE
MEV RANGE 100-1000
MULTIPLICITY
NUCLEAR MATTER
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PHOTON EMISSION
PROBABILITY
PROTON-NEUTRON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
RADIATIONS
SCATTERING
SPECTRA
TARGETS
URANIUM 238 TARGET