Köln 2004 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 37: Nuclear Structure/Spectroscopy VI
HK 37.5: Vortrag
Donnerstag, 11. März 2004, 15:00–15:15, A
Proton Induced Deuteron Breakup Cross-Section Measurements at 16.0 MeV — •C.D. Düweke1, A. Imig1, J. Ley1, H. Witała2, and H. Paetz gen. Schieck1 — 1IKP, University of Cologne, Germany — 2Jagellonian University, Cracow, Poland
We investigated the 2H(p,pp)n breakup reaction at Ep=16 MeV by measuring four kinematically complete configurations. The data of three so-called star configurations (the momenta of the three emitted nucleons in the c.m. lie in the same plane, have equal magnitude and are separated by 120∘) and one final-state interaction (FSI) were taken at the Cologne tandem accelerator. Former three-nucleon (3N) measurements showed some discrepancies between the experimental data and the theoretical predictions, which are based on 3N Faddeev calculations performed including the 2π-exchange Tucson-Melbourne 3N force. Specifically the measurement of the neutron-induced deuteron breakup at En=16 MeV [1] points to a significant difference between experiment and theory for the FSI. The measured cross sections are obviously lower than the theory in the final-state peaks. We intend to learn more about this discrepancy in the analogue reaction and to complement the breakup systematics between Ep=13 MeV and Ep=19 MeV [2].
[1] A.S. Crowell Ph.D. thesis, TUNL, Duke University (2001)
[2] H. Paetz gen. Schieck et al., Few-Body Systems 30, 80 (2001)