Münster 2011 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 10: Struktur und Dynamik von Kernen III
HK 10.6: Vortrag
Montag, 21. März 2011, 18:00–18:15, A-1
Quasi-free scattering off 12C in inverse kinematics at the R3B/LAND-setup — •Valerii Panin1, Thomas Aumann1, and Jonathan Taylor2 — 1Institut für Kernphysik, TU Darmstadt, Germany — 2Department of Physics, University of Liverpool, UK
An important part of the physics program at the future R3B (Reactions with Relativistic Radioactive Beams) experiment at FAIR will be based on the study of proton-induced reactions in a kinematical complete measurement. These are in particular the quasi-free scattering processes of the type (p,2p), (p,pn), (p,pα) etc, which will be used to investigate the single-particle and cluster structure of neutron-proton asymmetric nuclei and the role of nucleon-nucleon correlations in nuclei. A prototype setup for the detection of high-energy protons in (p,2p) reactions in coincidence with forward emitted light particles and heavy fragments has been built based on an array of Si micro-strip detectors for tracking and thick NaI scintilators for energy measurements. A 12C beam has been chosen for the bench-mark experiment since its structure is well known, and results from proton- as well as electron-induced knockout reactions are available. First results on two-proton angular correlations and momentum distributions of the knocked-out protons inside 12C will be discussed as well as the excitation energy spectrum of the residual 11B nuclei.