Electromagnetic dissociation of relativistic [sup 28]Si

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.865· OSTI ID:6642883

Barrette, J; Bellwied, R; Braun-Munzinger, P; Cleland, W E; David, G; Dee, J; Dietzsch, O; Duek, E; Fatyga, M; Fox, D; Greene, S V; Hall, J R; Hemmick, T K; Herrmann, N; Hong, B; Jayananda, K; Kraus, D; Kumar, B S; Lacasse, R; Lissauer, D ; Llope, W J; Ludlam, T; Mark, S K; McCorkle, S; Mitchell, J T; Muthuswamy, M; O'Brien, E; Pruneau, C; Rotondo, F S; Simon-Gillo, J; Sonnadara, U; Stachel, J; Takagui, E M; Takai, H; Throwe, T G; Waters, L; Winter, C; Wolf, K; Wolfe, D; Woody, C L; Xu, N; Zhang, Y; Zhang, Z; Zou, C ^[1]

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1. Brookhaven National Laboratory, Upton, New York 11973 (United States) Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States) McGill University, Montreal, Quebec, H3A 2T8 (Canada) University of New Mexico, Albuquerque, New Mexico 87131 (United States) University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States) State University of New York, Stony Brook, New York 11794 (United States) Universidade

We have studied in detail the electromagnetic dissociation of [sup 28]Si projectiles at 14.6 GeV/([ital c] nucleon), interacting with Pb, Sn, Cu, and Al targets. Exclusive cross sections were measured for several decay channels, including final states involving the emission of protons, neutrons, and [alpha] particles. Excitation energy distributions for the 1[ital n]+[sup 27]Si and 2[ital p]+[sup 26]Mg decay channels were reconstructed with a resolution of 2 MeV, using a constrained kinematic fit. The energy distributions obtained for 1[ital n]+[sup 27]Si are in good agreement with the [sigma]([gamma],[ital n]) photoneutron cross sections multiplied by the virtual photon spectrum obtained in the Weizsaecker-Williams approximation. A search for the double photon excitation process, based on the dependence of the cross sections on the target atomic number, was performed.

• OSTI ID: 6642883
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ALUMINIUM 27 TARGET
ATOMIC NUMBER
BARYONS
BASIC INTERACTIONS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COPPER 64 TARGET
CROSS SECTIONS
DECAY
DISSOCIATION
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
GEV RANGE
GEV RANGE 100-1000
HADRONS
HEAVY ION REACTIONS
INTERACTIONS
LEAD 207 TARGET
NUCLEAR REACTIONS
NUCLEONS
PARTICLE DECAY
SILICON 28 REACTIONS
TARGETS
TIN 119 TARGET