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

Technical Report · Mon Jun 01 00:00:00 EDT 1987

DOI:https://doi.org/10.2172/6492637· OSTI ID:6492637

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, 425, 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 0/sup 0/ cross sections are found to rise markedly between 300 and 425 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. 67 refs., 40 figs., 22 tabs.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6492637
• Report Number(s): LA-11004-T; ON: DE87010839; TRN: 87-024139
• Resource Relation: Other Information: Thesis. Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted. Thesis. Submitted to Utah State Univ., Logan
• Country of Publication: United States
• Language: English

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