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Cross section measurements of the pion single-charge-exchange reaction sup 12 C(. pi. sup + ,. pi. sup 0 ) sup 12 N(g. s. )

Journal Article · · Physical Review, C (Nuclear Physics); (USA)
; ; ; ;  [1]
  1. Isotope and Nuclear Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM (USA)
Total cross sections for the pion single-charge-exchange reaction {sup 12}C({pi}{sup +},{pi}{sup 0}){sup 12}N (ground state) were measured at 116, 160, 180, 200, 230, and 291 MeV with a fast activation technique. The excitation function for this nonanalog, spin-flip transition was found to be flat over this energy region that includes the (3,3) resonance. Good agreement is noted between these measurements and the estimated cross sections obtained from pion inelastic scattering measurements for the analog reaction {sup 12}C({pi}{sup +},{pi}{sup +}{prime}){sup 12}C{sup *} (1{sup +},{ital T}=1,{ital E}{sub {ital x}}=15.1 MeV) for all energies except 230 MeV. Distorted-wave impulse-approximation calculations in the {Delta}-hole formalism do not reproduce the trend of the data.
OSTI ID:
6279193
Journal Information:
Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 42:3; ISSN 0556-2813; ISSN PRVCA
Country of Publication:
United States
Language:
English