TY - JOUR
T1 - An eikonal treatment including two-step mechanisms for the (p,n) reaction on light nuclei
AU - Kronenfeld, J.
AU - Gal, A.
AU - Eisenberg, J. M.
PY - 1983/7/4
Y1 - 1983/7/4
N2 - The reactions 7Li(p, n)7Be(g.s.), 7Li(p, n)7Be(0.43 MeV), and 13C(p, n)13N(g.s.) are treated in an eikonalized distorted-wave impulse approximation (DWIA), including the contribution of a two-step mechanism involving isovector correlations for the last reaction. Our calculation uses the free on-shell nucleon-nucleon t-matrix, with spin and isospin dependence, and incorporates antisymmetrization of it. We find agreement at roughly the 20% level with the forward experimental charge-exchange results in the energy range 120 to 200 MeV. The two-step contribution for the 13C case is rather small, being of the order of 10% at 0°; it interferes constructively, thus improving somewhat the agreement with experiment.
AB - The reactions 7Li(p, n)7Be(g.s.), 7Li(p, n)7Be(0.43 MeV), and 13C(p, n)13N(g.s.) are treated in an eikonalized distorted-wave impulse approximation (DWIA), including the contribution of a two-step mechanism involving isovector correlations for the last reaction. Our calculation uses the free on-shell nucleon-nucleon t-matrix, with spin and isospin dependence, and incorporates antisymmetrization of it. We find agreement at roughly the 20% level with the forward experimental charge-exchange results in the energy range 120 to 200 MeV. The two-step contribution for the 13C case is rather small, being of the order of 10% at 0°; it interferes constructively, thus improving somewhat the agreement with experiment.
UR - http://www.scopus.com/inward/record.url?scp=48749146980&partnerID=8YFLogxK
U2 - 10.1016/0375-9474(83)90220-8
DO - 10.1016/0375-9474(83)90220-8
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AN - SCOPUS:48749146980
SN - 0375-9474
VL - 402
SP - 569
EP - 580
JO - Nuclear Physics A
JF - Nuclear Physics A
IS - 3
ER -