Pion-nucleus single charge-exchange reactions above the. delta. (1232) resonance

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5550114

Rokni, S H

Forward-angle differential cross sections for the (..pi../sup +/,..pi../sup 0/) reaction leading to the Isobaric Analog State in the residual nuclei at 300, 435, 500 and 550 MeV have been measured. Targets ranged in mass from /sup 7/Li to /sup 208/Pb. A description of the experimental setup and the analysis is presented. The O/sup 0/ cross sections are found to rise markedly between 300 and 435 MeV, contrary to the extrapolation from the lower energy data and to the behavior of the free pion-nucleon single charge exchange process. The angular distributions are sharply forward peaked. Systematics of the data indicate increased volume penetration with increasing pion beam energy. The cross sections are compared with the results of Glauber model calculations indicating the significance of higher order processes even at these energies.

• Research Organization: Utah State Univ., Logan (USA)
• OSTI ID: 5550114
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DISTRIBUTION
ENERGY DEPENDENCE
ENERGY RANGE
EXPERIMENTAL DATA
GLAUBER THEORY
HADRON REACTIONS
HEAVY NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
LIGHT NUCLEI
MASS NUMBER
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
PION NEUTRAL REACTIONS
PION PLUS REACTIONS
PION REACTIONS