Enhanced backward emission of heavy fragments in high-energy proton-nucleus collisions
Journal Article
·
· Phys. Rev. C; (United States)
The conventional description of high energy proton-nucleus collisions in terms of an intranuclear cascade and compound nuclear decay (the two-step model) breaks down at projectile energies E/sub p/>10 GeV. Unusual backward enhancements are found in the angular distribution of heavy fragments (Sc, Cu) from uranium targets. This effect is explained in a fast breakup model of deep spallation/cleavage processes. The observed backward emission originates in the competition between (backward-directed) Coulomb repulsion and (forward-directed) momentum components from recoiling nucleons.
- Research Organization:
- Institut fuer Theoretische Physik der Universitat Heidelberg, 6900 Heidelberg, Federal Republic of Germany
- OSTI ID:
- 6017165
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:5; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
652015* -- Nuclear Properties & Reactions
A=220 & above
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ENERGY RANGE
FRAGMENTATION
GEV RANGE
GEV RANGE 10-100
GEV RANGE 100-1000
HADRON REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PROTON REACTIONS
RADIOISOTOPES
RECOILS
SCANDIUM 47
SCANDIUM ISOTOPES
TARGETS
URANIUM 238 TARGET
A=220 & above
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ENERGY RANGE
FRAGMENTATION
GEV RANGE
GEV RANGE 10-100
GEV RANGE 100-1000
HADRON REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PROTON REACTIONS
RADIOISOTOPES
RECOILS
SCANDIUM 47
SCANDIUM ISOTOPES
TARGETS
URANIUM 238 TARGET