Kinematically complete measurement of the (. pi. (,. pi. (p) reaction on /sup 12/C at 220 MeV

Journal Article · Thu Nov 01 04:00:00 EST 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.30.1622· OSTI ID:6234515

Faucett, J A; Wood, B E; McDaniels, D K; Gram, P A.M.; Hamm, M E; Oothoudt, M A; Goulding, C A; Swenson, L W; Krane, K S; Stetz, A W; Plendl, H S; Norton, J; Funsten, H; Joyce, D

The /sup 12/C(..pi../sup + -/,..pi../sup + -/p) reactions were studied at T/sub ..pi../ = 220 MeV. The final particles were detected both separately and in coincidence and their momenta were measured. Calculation of the excitation energy of the residual nucleus allowed clear separation of events where an outer proton was removed. The data provide detailed evidence confirming the quasielastic picture of pion knockout reactions. Evidence for this derives from the agreement between the peak energies found in the coincidence spectra and those found in inclusive spectra, from analysis of angular distributions, and from the location of peaks found in missing mass spectra. The coincidence cross section is found to account for about half of the (..pi../sup +/,..pi../sup +/') reaction, and about half of this in turn corresponds to quasifree knockout of the outer shell protons. Secondary processes in the (..pi../sup -/,..pi../sup -/p) reaction are found to play a much more important role than in the (..pi../sup +/,..pi../sup +/p) reaction.

• Research Organization: University of Oregon, Eugene, Oregon 97403
• OSTI ID: 6234515
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 30:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
DATA
DIRECT REACTIONS
ENERGY RANGE
EXPERIMENTAL DATA
HADRON REACTIONS
INCLUSIVE INTERACTIONS
INELASTIC SCATTERING
INFORMATION
INTERACTIONS
KNOCK-OUT REACTIONS
LAMPF LINAC
LINEAR ACCELERATORS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MESON FACTORIES
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
PROPORTIONAL COUNTERS
QUASI-FREE REACTIONS
RADIATION DETECTORS
SCATTERING
SHELL MODELS
TARGETS