Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 13: Struktur und Dynamik von Kernen
HK 13.4: Vortrag
Montag, 19. März 2012, 17:30–17:45, P 4
Quasi-free knock-out reactions in inverse kinematics at R3B/LAND-setup — •Valerii Panin1, Thomas Aumann1, and Jonathan Taylor2 — 1TU Darmstadt, Germany — 2University 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 a kinematical complete measurement of proton-induced reactions. These are in particular the quasi-free scattering processes of the type (p,2p), (p,pn), (p,pα) etc, which will be used to study 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. In the present bemchmark experiment with 12C the knock-out reactions from different single-particle states have been identified, including knock-out from the 0s state by reconstructing the excitation-energy spectrum of residual 11B utilizing γ spectrometry and the invariant-mass method. This work is supported by the Hessian LOEWE initiative through HIC for FAIR.