Interference effects in 12C(p, γ)13N and direct capture to unbound states

Comparative Study of Three-Body Models for Continuum States

“…In d+nucleus collisions, even in elastic scattering, the experimental cross sections cannot be explained without including breakup channels. 10) The same problem occurs in 6 He+nucleus elastic scattering 11) where data are available, but is also expected to occur in all collisions involving a weakly bound nucleus.…”

“…1), 2) Most of them present a single bound state, all excited states being in the continuum. Some systems, such as 5 H or 10 He, are close to particle stability, but even the ground state is unbound. Developing efficient techniques to investigate scattering states is therefore quite important in the physics of exotic nuclei, and in particular of halo nuclei.…”

S-Factor measurement of the12C(p,γ)13N reaction in inverse kinematics

“…The last study about this astrophysical reaction dates back in the '70s [6]. Also recent data for the astrophysical S-factor exists only for energies down to E cm ≥ 300 keV [7].…”

AZURE: AnR-matrix code for nuclear astrophysics

“…Traditionally, the extrapolation of low-energy radiative capture or reaction data for low-level-density compound systems utilized the single-level Breit-Wigner formula for resonance data [3], complemented by potential model based direct capture calculations [4][5][6][7] for nonresonant reaction components. On the other hand, reaction data on high-leveldensity compound systems were traditionally extrapolated on the basis of statistical Hauser-Feshbach theories [2,8].…”