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(. pi. ,. pi. N) reactions on /sup 25/Mg and /sup 197/Au

Journal Article · · Phys. Rev., C; (United States)
Activation cross sections have been measured for the reactions /sup 25/Mg(..pi../sup + -/,..pi../sup + -/N)/sup 24/Na and /sup 197/Au(..pi../sup + -/,..pi../sup + -/N)/sup 196/Au between 100 and 300 MeV. The cross section ratios R/sub p/ = sigma (..pi../sup +/)/sigma (..pi../sup -/) and R/sub n/ = sigma (..pi../sup -/)/sigma (..pi../sup +/) are smaller than the corresponding free-particle ratios in all cases. Comparisons with the predictions of intranuclear cascade calculations and the nucleon charge-exchange model indicate that the former gives good agreement for a heavy nucleus but not for light nuclei, while the inverse is true for the latter model.
Research Organization:
Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
OSTI ID:
5986891
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 20:1; ISSN PRVCA
Country of Publication:
United States
Language:
English

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