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Absolute cross sections for the /sup 12/C(. pi. /sup + -/,. pi. N)/sup 11/C reactions between 40 and 600 MeV

Journal Article · · Phys. Rev., C; (United States)
The excitation functions for the /sup 12/C(..pi../sup + -/,..pi..N)/sup 11/C reactions have been established for 40- to 600-MeV ..pi../sup -/ and 50- to 520-MeV ..pi../sup +/. These excitation functions are dominated by the (3,3) pion-nucleon resonance but show an upward energy shift in the resonance peak for ..pi../sup -/ (to about 190 MeV) and a downward shift for ..pi../sup +/ (to about 160 MeV). The sigma (..pi../sup -/)/sigma (..pi../sup +/) ratio at 180 MeV is 1.59 +- 0.07. The results are compared with theoretical calculations based on a semiclassical transport model including nucleon charge exchange and an intranuclear cascade model.
Research Organization:
Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87545
OSTI ID:
5726560
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 20:5; ISSN PRVCA
Country of Publication:
United States
Language:
English