Large p/sub T/ from the fragmentation of 1. 2-GeVnucleon /sup 139/La nuclei

Journal Article · Mon Apr 25 04:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.60.1699· OSTI ID:5226939

Brady, F P; Christie, W B; Romero, J L; Tull, C E; McEachern, B; Webb, M L; Young, J C; Crawford, H J; Greiner, D E; Lindstrom, P J; others, and

The first measurements of the transverse momenta (p/sub T/) of heavy projectile fragments produced by fragmentation of 1.2-GeVnucleon La are presented. The momentum distributions of the fragments (Zapprox. =26--56) are Gaussians and broader than predicted by models based on internal momenta of the projectile nucleons. The larger p/sub T/ observed do not appear to be due solely to Coulomb effects, but are consistent with a simple model whereby nucleons from the (hot) overlap region recoil collectively into the (colder) projectile fragments. Thus, p/sub T/ and the fragment mass may provide a good indication of the vector impact parameter b

• Research Organization: Department of Physics and Crocker Nuclear Laboratory, University of California, Davis, California 95616
• OSTI ID: 5226939
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:17; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CARBON
CHARGED-PARTICLE REACTIONS
COULOMB FIELD
DISTRIBUTION
ELECTRIC FIELDS
ELEMENTS
ENERGY RANGE
FRAGMENTATION
GEV RANGE
GEV RANGE 100-1000
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
IMPACT PARAMETER
LANTHANUM 139 REACTIONS
LINEAR MOMENTUM
MASS
MATHEMATICAL MODELS
MATTER
NONMETALS
NUCLEAR MATTER
NUCLEAR REACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE RAPIDITY
RECOILS
RELATIVISTIC RANGE
STATISTICAL MODELS
THERMODYNAMIC MODEL
TRANSVERSE MOMENTUM