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Bochum 1998 – scientific programme

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HK: Hadronen und Kerne

HK 66: Hadronic Probes VII, Bremsstrahlung

HK 66.4: Talk

Thursday, March 19, 1998, 15:15–15:30, G

Results from proton-proton bremsstrahlung measurements at 190 MeV — •H. Huisman1, J.C.S. Bacelar1, M.J. van Goethem1,2, M.N. Harakeh1, M. Hoefman1,2, N. Kalantar-Nayestanaki1, A. Kugler3,2, H. Löhner1,2, J.G. Messchendorp1, R.W. Ostendorf1,2, S. Schadmand1, R. Simon4,2, R. Turrisi1,2, M. Volkerts1, V. Wagner3,2, and H.W. Wilschut1,21KVI, Groningen — 2for the Taps Collaboration — 3NPI, Řež u Prahy — 4GSI, Darmstadt

We have performed two proton-proton bremsstrahlung experiments below the pion production threshold. The main goal of these experiments is to study aspects of the nucleon-nucleon interaction, which cannot be extracted from elastic scattering [1]. These experiments have been performed with the 190 MeV polarized-proton beam of the AGOR cyclotron at KVI. Outgoing protons were detected with the newly built Small-Angle Large-Acceptance Detector (SALAD). For the detection of the bremsstrahlung photons we used the Two-Arm Photon Spectrometer (TAPS) in two different geometries. We have measured absolute cross sections and analyzing powers of the pp-bremsstrahlung reaction in a large part of phase space, with a very high statistical accuracy. The results will be presented in comparison with theoretical predictions.

[1] N. Kalantar-Nayestanaki et al., Few Body Systems Suppl. 8, 145 (1995)

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