Quasi-free proton knockout from 12C on carbon target at 398 MeV/u.

Authors :: Panin, V.
Holl, M.
Taylor, J.T.
Aksyutina, Y.
Alvarez-Pol, H.
Aumann, T.
Bertulani, C.A.
Boretzky, K.
Caesar, C.
Chartier, M.
Chulkov, L.V.
Cortina-Gil, D.
Enders, J.
Ershova, O.
Geissel, H.
Gernhäuser, R.
Heil, M.
Johansson, H.T.
Jonson, B.
Kelić-Heil, A.
Source :: Physics Letters B. Oct2019, Vol. 797, pN.PAG-N.PAG. 1p.
Publication Year :: 2019
Abstract: The proton-removal mechanism of the 12C → 11 B reaction induced on a carbon target via elementary nucleon-nucleon scattering is investigated in exclusive triple-coincidence measurements. The observed two-nucleon angular correlations are found to be consistent with quasi-free scattering of a projectile-like proton off a target-like nucleon. Exclusive cross sections for one-step pp and pn interactions are determined as σ p p = 17.2 (12) mb and σ p n = 18.2 (18) , respectively. The extracted quasi-free component amounts up to 58(4)% of the total proton-removal cross section. The results are compared to total proton-removal cross sections obtained from the experiment and eikonal reaction theory. [ABSTRACT FROM AUTHOR]