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Title: Breakup of spectator residues in relativistic nuclear collisions

Abstract

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.

Authors:
; ;
Publication Date:
Research Org.:
Gesellschaft fuer Schwerionenforschung, D-1600 Darmstadt, Federal Republic of Germany
OSTI Identifier:
5905889
Resource Type:
Journal Article
Journal Name:
Phys. Rev. C; (United States)
Additional Journal Information:
Journal Volume: 27:3
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA REACTIONS; FRAGMENTATION; GOLD 197 TARGET; NEON 20 REACTIONS; PROTON REACTIONS; ANGULAR DISTRIBUTION; BREAKUP REACTIONS; COINCIDENCE SPECTROMETRY; DIFFERENTIAL CROSS SECTIONS; GEV RANGE 01-10; GEV RANGE 10-100; MULTIPLICITY; STATISTICAL MODELS; BARYON REACTIONS; CHARGED-PARTICLE REACTIONS; CROSS SECTIONS; DISTRIBUTION; ENERGY RANGE; GEV RANGE; HADRON REACTIONS; HEAVY ION REACTIONS; MATHEMATICAL MODELS; NUCLEAR REACTIONS; NUCLEON REACTIONS; TARGETS; 651925* - Nuclear Properties & Reactions, A=190-219, Experimental- Nuclear Reactions & Scattering- (-1987)

Citation Formats

Warwick, A I, Wieman, H H, and Gutbrod, H H. Breakup of spectator residues in relativistic nuclear collisions. United States: N. p., 1983. Web. doi:10.1103/PhysRevC.27.1083.
Warwick, A I, Wieman, H H, & Gutbrod, H H. Breakup of spectator residues in relativistic nuclear collisions. United States. https://doi.org/10.1103/PhysRevC.27.1083
Warwick, A I, Wieman, H H, and Gutbrod, H H. 1983. "Breakup of spectator residues in relativistic nuclear collisions". United States. https://doi.org/10.1103/PhysRevC.27.1083.
@article{osti_5905889,
title = {Breakup of spectator residues in relativistic nuclear collisions},
author = {Warwick, A I and Wieman, H H and Gutbrod, H H},
abstractNote = {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.},
doi = {10.1103/PhysRevC.27.1083},
url = {https://www.osti.gov/biblio/5905889}, journal = {Phys. Rev. C; (United States)},
number = ,
volume = 27:3,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 1983},
month = {Tue Mar 01 00:00:00 EST 1983}
}