/sup 67/Li(. pi. /sup +/,pd)/sup 3//sup ,//sup 4/He reactions at 59. 4 MeV

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.1435· OSTI ID:6139841

Wharton, W R; Barnes, P D; Bassalleck, B; Eisenstein, R A; Franklin, G; Grace, R; Maher, C; Pile, P; Rieder, R; Szymanski, J

The (..pi../sup +/,pd) reactions on /sup 6/Li and /sup 7/Li have been studied at T/sub ..pi../ = 59.4 MeV. Triple- and single-differential cross sections for these reactions are presented. The data are fitted to a T matrix and compared to the /sup 3/H(..pi../sup +/,p)/sup 2/H reaction. A model in which the pion interacts and is absorbed on a ''quasi-triton'' cluster describes the main features of the data very well. An extrapolation of our data into unmeasured regions of phase space suggests that about 8% of the pion absorption cross section on /sup 6/Li at 59.4 MeV goes into the (..pi../sup +/,pd) channel. The /sup 7/Li(..pi../sup +/,pd)/sup 4/He(2 /sup -/) transition at 22.1 MeV excitation appears to be strongly populated. This is a surprise because it is not seen in the /sup 7/Li(p,..cap alpha..)/sup 4/He reaction.

• Research Organization: Wheaton College, Wheaton, Illinois 60187
• OSTI ID: 6139841
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
CAPTURE
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CLUSTER MODEL
CROSS SECTIONS
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRON REACTIONS
HADRONS
HELIUM 3
HELIUM 4
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
LITHIUM 6 TARGET
LITHIUM 7 TARGET
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MATRICES
MEASURING INSTRUMENTS
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PHASE SPACE
PION PLUS REACTIONS
PION REACTIONS
PROPORTIONAL COUNTERS
PROTONS
RADIATION DETECTORS
S MATRIX
SHELL MODELS
SPACE
STABLE ISOTOPES
TARGETS
TRITIUM TARGET