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Bochum 2009 – scientific programme

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HK: Fachverband Hadronen und Kerne

HK 67: Poster Session

HK 67.25: Poster

Thursday, March 19, 2009, 14:00–16:00, Audi-Max

Investigation of the Deuteron Breakup on Protons in the Forward Angular Region — •Izabela Ciepal — for JU/USl/KVI and GEM Collaborations

The system composed of three nucleons (3N) is the simplest nontrivial environment in which various models of nucleon-nucleon (NN) interaction can be investigated. Experimental studies of the 1H(d,pp)n breakup reaction in a large phase space region, performed at KVI at the deuteron beam energy of 130 MeV, showed that the Coulomb interaction introduces an important contribution to the reaction dynamics. In contrast to the elastic scattering process, particular configurations of the breakup reaction are characterized by small relative energies of the outgoing charged particles (pp pairs in this case), therefore revealing an enhanced sensitivity to the Coulomb repulsion. The largest effects are observed in the domain of the smallest studied polar angles.

In order to investigate this problem in more details, a dedicated
experiment was performed at FZ Jülich for the same reaction and
energy, with the use of the GeWall detector. In this experiment a region of small polar angles (4-14) has been explored, not attainable in any other laboratory and crucial to investigate action of the Coulomb force. The results obtained for selected kinematical configurations are compared with various theoretical predictions, in particular with properly averaged calculations including Coulomb force effect.

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