CROSS-SECTION AND ASTROPHYSICAL S-FACTOR FOR THE C-13(P,GAMMA)N-14 REACTION

We have studied the C-13(p, gamma)N-14 reaction in the energy range E( p) = 120-950 keV and obtained cross section curves for capture into th e first six states of N-14. The 1(-), T = 1 state in N-14 was observed at laboratory energy E(R) = 557.6+/-0.5 keV (E(x) = 8068.1+/-0.5 keV) with width Gamma(R) = 40+/-1 keV, and the 2(-), T = 0 state at E(R) = 450.4+/-0.5 keV (E(x) = 7968.6+/-0.5 keV). Spectroscopic factors have been obtained from observation of direct capture to all states; they are in fair agreement with results from stripping reaction studies. Th e S-factor curve for the transition to the ground state is in excellen t agreement with previous results; S-factor curves for the other trans itions are reported for the first time. The total S-factor extrapolate d to 25 keV is 7.7+/-1.0 keV.b, somewhat higher than previous values.