50 MeV pion inelastic scattering to the 1/sup +/ doublet in /sup 12/C

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.37.1347· OSTI ID:5186047

Ritchie, B G; Escalante, J A; Adams, G S; Al-Solami, M; Lasheen, N; Pignault, G; Preedom, B M; Whisnant, C S; Mitchell, J H; Peterson, R J

Cross sections have been measured for the excitation of the 12.71 MeV, T = 0, and 15.11 MeV, T = 1, 1/sup +/ states in /sup 12/C by 50 MeV ..pi../sup +- / scattering. The cross section ratio, R = ..sigma..(12.7 MeV)..sigma..(15.1 MeV), was found to be 7.5 +- 1.5 for ..pi../sup +/ and 6.6 +- 1.5 for ..pi../sup -/ at 50 MeV, giving an isospin averaged value of R = 7.05 +- 1.06. These results indicate that the anomalous behavior of R is attributable to the energy dependence of the T = 1 1/sup +/ level. The data also indicate that the impulse approximation is probably invalid at 50 MeV, contrary to the conclusions of a recent study at 65 MeV

• Research Organization: Department of Physics, Arizona State University, Tempe, Arizona 85287-1504
• OSTI ID: 5186047
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 37:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
ENERGY DEPENDENCE
ENERGY RANGE
EXPERIMENTAL DATA
HADRON REACTIONS
IMPULSE APPROXIMATION
INELASTIC SCATTERING
INFORMATION
ISOSPIN
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PROPERTIES
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
SCATTERING
TARGETS