Quasielastic reaction mechanism studied using the reaction sup 12 C( e , e prime p )

Journal Article · Mon Apr 02 00:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.1646· OSTI ID:6828121

Weinstein, L B; Baghaei, H; Bertozzi, W; Finn, J M; Glickman, J; Hyde-Wright, C E; Kalantar-Nayestanaki, N; Lourie, R W; Nelson, J A; Sapp, W W; Sargent, C P; Ulmer, P E; Cottman, B H; Ghedira, L; Winhold, E J; Calarco, J R; Wise, J; Boberg, P; Chang, C C; Zhang, D ; Aniol, K; Epstein, M B; Margaziotis, D J; Perdrisat, C; Punjabi, V ^[1]

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1. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (USA) Department of Physics, Rensselaer Polytechnic Institute, Troy, New York 12181 (USA) Department of Physics, University of New Hampshire, Durham, New Hampshire 03824 (USA) Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742 (USA) Department of Physics Astronomy, California State University, Los Angeles, California 90032 (USA) Department of Physics, College of William and Mary, Williamsburg, Virginia 23185 (USA)

We have measured missing-energy spectra for the reaction {sup 12}C({ital e},{ital e}{prime}{ital p}) in the quasielastic region in parallel kinematics at momentum transfers {ital q} of 585, 775, and 827 MeV/{ital c}. We observed {sup 1}{ital p} and {sup 1}{ital s} single-proton knockout peaks and large broad strength attributed to multinucleon knockout. We saw no increase in strength at pion threshold. The ratio of single-particle knockout to a distorted-wave impulse-approximation calculation is approximately constant with {ital q}. Multinucleon knockout is 25%--40% of the total cross section; it increases with {ital q}. This quasielastic non-single-nucleon knockout is much stronger than previously observed.

• OSTI ID: 6828121
• Journal Information: Physical Review Letters; (USA), Vol. 64:14; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12 TARGET
ELECTRON REACTIONS
KNOCK-OUT REACTIONS
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
EXPERIMENTAL DATA
IMPULSE APPROXIMATION
MEV RANGE 100-1000
MISSING MASS
PARTICLE KINEMATICS
SPECTROMETERS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIRECT REACTIONS
ENERGY RANGE
INFORMATION
LEPTON REACTIONS
MASS
MEASURING INSTRUMENTS
MEV RANGE
NUCLEAR REACTIONS
NUMERICAL DATA
TARGETS
651320* - Nuclear Properties & Reactions
A=6-19
Experimental