Test of the applicability of the two-step model to the emission of Sc fragments in the interaction of /sup 238/U with 400 GeV protons

Journal Article · Fri Aug 01 04:00:00 EDT 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.22.670· OSTI ID:5206635

Fortney, D R; Porile, N T

Differential ranges of /sup 44/Sc/sup m/, /sup 46/Sc, /sup 47/Sc, and /sup 48/Sc emitted at 17/sup 0/ and 163/sup 0/ to the beam in the interaction of /sup 238/U with 400 GeV protons have been measured. The mean kinetic energies of the fragments decrease from 54.2 +- 1.0 MeV at 17/sup 0/ to 42.0 +- 0.7 MeV at 163/sup 0/. From this shift, the mean velocity of the emitting nucleus is obtained as 0.10 (MeV/A)/sup 1/2/. The angular distribution of Sc fragments in a system moving with this velocity is found to be asymmetric about 90/sup 0/ with more fragments emitted at backward than at forward angles (F/B approx. 0.8). The implications of this result for the reaction mechanism are considered.

• Research Organization: Department of Chemistry, Purdue University, West Lafayette, Indiana 47907
• OSTI ID: 5206635
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 22:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

652026* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ENERGY
ENERGY RANGE
FRAGMENTATION
GEV RANGE
GEV RANGE 100-1000
HADRON REACTIONS
KINETIC ENERGY
KINETICS
NUCLEAR FRAGMENTS
NUCLEAR REACTION KINETICS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEOSYNTHESIS
PROTON REACTIONS
RANGE
REACTION KINETICS
SCANDIUM ISOTOPES
SPALLATION
TARGETS
URANIUM 238 TARGET
VELOCITY