Nuclear-breakup mechanisms in the interaction of relativistic projectiles with heavy targets
The breakup of a Au nucleus under bombardment with relativistic p, ..cap alpha.., and /sup 20/Ne has been investigated in an extensive, multi-detector study. The present discussion addresses some of the many aspects of the experimental results. A broad distribution of coincident fragment masses is observed, with the total fragment kinetic energy being higher than expected for a fission mechanism for total fragment mass less than or equal to 120. The formation of light fragments is shown to be inconsistent with a binary breakup mechanism, and a multi-fragment target breakup is suggested. In general, the results indicate a broad spectrum of violence in the collisions, from gentle, leading to the production of heavy spallation products and fission, to essentially explosive, leading to multi-fragment breakup into light mas products. These aspects of the reactions represent a late-stage breakup of the target residues and are positively correlated with the violence of the initial fast stage of the collision as measured by the charged particle multiplicity.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6424128
- Report Number(s):
- CONF-8206132-2; ON: DE83007614
- Resource Relation:
- Conference: Nuclear reaction mechanism conference, Varenna, Italy, 14 Jun 1982; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALPHA REACTIONS
BREAKUP REACTIONS
GOLD 197 TARGET
NEON 20 REACTIONS
PROTON REACTIONS
ANGULAR CORRELATION
ENERGY SPECTRA
EXPERIMENTAL DATA
FRAGMENTATION
GEV RANGE 01-10
GEV RANGE 10-100
MASS SPECTRA
MULTIPLICITY
NUCLEAR FRAGMENTS
RELATIVISTIC RANGE
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
CORRELATIONS
DATA
ENERGY RANGE
GEV RANGE
HADRON REACTIONS
HEAVY ION REACTIONS
INFORMATION
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
SPECTRA
TARGETS
651925* - Nuclear Properties & Reactions
A=190-219
Experimental- Nuclear Reactions & Scattering- (-1987)