Pion production differential cross section of heavy-ion collisions at subthreshold energies

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5014157

Abumurad, K M

A revised model for pion production in heavy-ion peripheral collisions at subthreshold energies is presented. The pion-production mechanism investigated here is a two step process involving the formation and subsequent decay of an isobar resonance in the projectile nucleus. The independent-particle shell model with harmonic oscillator states is used to approximate the internal structure of the nucleus. The pion production cross section shows a definite angular distribution characteristic of coherent production. It also gives an indication of the quantum signature of the emitted pions. The results show the disappearance of the quantum signature from the energy spectra because of the inclusion of higher order multipoles. The theory is compared to recent experimental data. The comparison reveals that the general trend is reproduced, which is encouraging.

• Research Organization: Idaho Univ., Moscow, ID (USA)
• OSTI ID: 5014157
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
645000 -- High Energy Physics
645200* -- High Energy Physics-- Particle Interactions & Properties-Theoretical
651000 -- Nuclear Physics
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CALCULATION METHODS
CHARGED-PARTICLE REACTIONS
DATA ANALYSIS
ELEMENTARY PARTICLES
ENERGY
HADRONS
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MESONS
NUCLEAR MODELS
NUCLEAR REACTIONS
PIONS
PSEUDOSCALAR MESONS
SHELL MODELS
THRESHOLD ENERGY