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Breakup of spectator residues in relativistic nuclear collisions

Journal Article · · Phys. Rev. C; (United States)
; ;
Low energy nuclear fragments (12< or =A< or =140) from the bombardment of Au by high energy protons, /sup 4/He, and /sup 20/Ne projectiles are measured to yield information on the breakup of the target nucleus. We discuss the shapes of the fragment energy spectra across this broad range of fragment mass and pick out the fission component by its binary breakup. Multiplicities of coincident fast charged particles are presented as a measure of the degree of violence of the initial stage of the collision. Angular distributions of light fragments (8< or =Z< or =11) give the average velocities imparted to the residue in central collisions, and these values are compared to the results of cascade calculations. Measurements of slow fragment multiplicities from central events reveal a many-fragment final state. In the light of this finding we develop a simple calculation of the Coulomb features of the observed spectra. The applicability of a statistical breakup model is discussed.
Research Organization:
Gesellschaft fuer Schwerionenforschung, D-1600 Darmstadt, Federal Republic of Germany
OSTI ID:
5905889
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:3; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651925* -- Nuclear Properties &amp; Reactions
A=190-219
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
BARYON REACTIONS
BREAKUP REACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ENERGY RANGE
FRAGMENTATION
GEV RANGE
GEV RANGE 01-10
GEV RANGE 10-100
GOLD 197 TARGET
HADRON REACTIONS
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MULTIPLICITY
NEON 20 REACTIONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PROTON REACTIONS
STATISTICAL MODELS
TARGETS