Cross section calculations for subthreshold pion production in peripheral heavy-ion collisions

Technical Report · Fri Aug 01 04:00:00 EDT 1986

OSTI ID:7166238

Norbury, J W; Cucinotta, F A; Deutchman, P A; Townsend, L W

Total cross sections, angular distributions, and spectral distributions for the exclusive production of charged and neutral subthreshold pions produced in peripheral nucleus-nucleus collisions are calculated by using a particle-hole formalism. The pions result from the formation and decay of an isobar giant resonance state formed in a C-12 nucleus. From considerations of angular momentum conservation and for the sake of providing a unique experimental signature, the other nucleus, chosen for this work to be C-12 also, is assumed to be excited to one of its isovector (1+) giant resonance states. The effects of nucleon recoil by the pion emission are included, and Pauli blocking and pion absorption effects are studied by varying the isobar width. Detailed comparisons with experimental subthreshold pion data for incident energies between 35 and 86 MeV/nucleon are made.

• Research Organization: National Aeronautics and Space Administration, Hampton, VA (USA). Langley Research Center
• OSTI ID: 7166238
• Report Number(s): N-86-30485; NASA-TP-2600; L-16129; NAS-1.60:2600
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BOSONS
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
HADRONS
HEAVY ION REACTIONS
INFORMATION
MESONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
PIONS
PSEUDOSCALAR MESONS
THEORETICAL DATA