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Target fragmentation of /sup 197/Au by relativistic heavy ions

Journal Article · · Phys. Rev., C; (United States)
; ; ;
The cross sections and recoil properties of a number of target fragmentation products formed by the reactions of 4.8- and 25-GeV /sup 12/C and 7.6-GeV /sup 20/Ne with /sup 197/Au have been measured. Comparisons between these data for relativistic heavy ions and those for relativistic protons have been used to test the hypotheses of factorization and limiting fragmentation. The cross sections for most of the nuclides measured are related for different projectiles by the ratio of the total reaction cross sections. An exception is the light nuclides (A<30), for which enhanced yields are found for heavy-ion projectiles compared to protons. The velocities imparted to recoil fragments by the projectiles are considerably larger for the heavy ions of approx.0.4 A GeV than for protons, but are the same for 2.1 A GeV /sup 12/C (25-GeV kinetic energy) and 28-GeV protons. Limiting fragmentation has not been reached at energies of 0.4 A GeV, as shown by the large change in recoil properties with increasing energy. The projectile kinetic energy appears to be more significant as a scaling variable than the velocity for relativistic heavy ions.
Research Organization:
Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
6999372
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 22:5; 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
BREAKUP REACTIONS
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
ENERGY RANGE
EXPERIMENTAL DATA
FRAGMENTATION
GEV RANGE
GEV RANGE 01-10
GEV RANGE 10-100
GOLD 197 TARGET
HEAVY ION REACTIONS
INFORMATION
KINETICS
NEON 20 REACTIONS
NUCLEAR REACTION KINETICS
NUCLEAR REACTIONS
NUMERICAL DATA
REACTION KINETICS
RECOILS
RELATIVISTIC RANGE
SCALING LAWS
TARGETS
TOTAL CROSS SECTIONS