Density dependence of single-proton and two-proton knockout reactions under quasifree conditions

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.80.011602· OSTI ID:21289966

Cosyn, Wim; Ryckebusch, Jan ^[1]

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1. Department of Subatomic and Radiation Physics, Ghent University, Proeftuinstraat 86, B-9000 Gent (Belgium)

We consider high-energy quasifree single- and two-proton knockout reactions induced by electrons and protons and address the question of what target-nucleus densities can be effectively probed after correcting for nuclear attenuation (initial- and final-state interactions). Our calculations refer to ejected proton kinetic energies of 1.5 GeV, the reactions (e,e{sup '}p), ({gamma},pp), and (p,2p), and a carbon target. It is shown that each of the three reactions is characterized by a distinctive sensitivity to the density of the target nucleus. The bulk of the ({gamma},pp) strength stems from the high-density regions in the deep nuclear interior. Despite the strong attenuation, sizable densities can be probed by (p,2p) reactions provided that the energy resolution allows one to pick nucleons from s orbits. The effective mean densities that can be probed in high-energy (e,e{sup '}p) reactions is of the order of 30%-50% of the nuclear saturation density.

• OSTI ID: 21289966
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 80; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATTENUATION
CARBON
COMPUTERIZED SIMULATION
DENSITY
ELECTRONS
ENERGY RESOLUTION
FINAL-STATE INTERACTIONS
GEV RANGE 01-10
KINETIC ENERGY
KNOCK-OUT REACTIONS
NUCLEAR REACTIONS
NUCLEI
ORBITS
PROTON-EMISSION DECAY
PROTONS
SATURATION
SENSITIVITY