TY  - JOUR
A1  - Panin, Valerii
A1  - Taylor, Jonathan Thomas
A1  - Paschalis, Stefanos
A1  - Wamers, Felix
A1  - Aksyutina, Yuliya
A1  - Álvarez-Pol, Héctor
A1  - Aumann, Thomas
A1  - Bertulani, Carlos A.
A1  - Boretzky, Konstanze
A1  - Caesar, Christoph
A1  - Chartier, Marielle
A1  - Chulkov, Leonid V.
A1  - Cortina Gil, Dolores
A1  - Enders, Jamis
A1  - Ershova, Olga
A1  - Geissel, Hans
A1  - Gernhäuser, Roman
A1  - Heil, Michael
A1  - Johansson, Håkan T.
A1  - Jonson, Björn
A1  - Kelic-Heil, Aleksandra
A1  - Langer, Christoph
A1  - Le Bleis, Tudi
A1  - Lemmon, Roy Crawford
A1  - Nilsson, Thomas
A1  - Petri, Marina
A1  - Plag, Ralf
A1  - Reifarth, René
A1  - Rossi, Dominic M.
A1  - Scheit, Heiko
A1  - Simon, Haik
A1  - Weick, Helmut
A1  - Wimmer, Christine
T1  - Exclusive measurements of quasi-free proton scattering reactions in inverse and complete kinematics
T2  - Physics Letters B
N2  - Quasi-free scattering reactions of the type (p, 2p) were measured for the first time exclusively in complete and inverse kinematics, using a 12C beam at an energy of ∼400 MeV/u as a benchmark. This new technique has been developed to study the single-particle structure of exotic nuclei in experiments with radioactive-ion beams. The outgoing pair of protons and the fragments were measured simultaneously, enabling an unambiguous identification of the reaction channels and a redundant measurement of the kinematic observables. Both valence and deeply-bound nucleon orbits are probed, including those leading to unbound states of the daughter nucleus. Exclusive (p, 2p) cross sections of 15.8(18) mb, 1.9(2) mb and 1.5(2) mb to the low-lying 0p-hole states overlapping with the ground state (3/2−) and with the bound excited states of 11B at 2.125 MeV (1/2−) and 5.02 MeV (3/2−), respectively, were determined via γ -ray spectroscopy. Particle-unstable deep-hole states, corresponding to proton removal from the 0s-orbital, were studied via the invariant-mass technique. Cross sections and momentum distributions were extracted and compared to theoretical calculations employing the eikonal formalism. The obtained results are in a good agreement with this theory and with direct-kinematics experiments. The dependence of the proton–proton scattering kinematics on the internal momentum of the struck proton and on its separation energy was investigated for the first time in inverse kinematics employing a large-acceptance measurement.
KW  - Quasi-free scattering
KW  - Inverse kinematics
KW  - Single-particle states
KW  - Spectroscopic factors
Y1  - 2015
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/54668
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-546687
SN  - 1873-2445
SN  - 0370-2693
VL  - 753.2016
SP  - 204
EP  - 210
PB  - Elsevier
CY  - Amsterdam
ER  -