Angular and polarization dependence of compton scattering from He-4 in the Delta-resonance region
Physics letters : B. Bd. 432. H. 1-2. Amsterdam: Elsevier 1998 S. 45 - 50
Erscheinungsjahr: 1998
ISBN/ISSN: 0031-9163 ; 0370-2693
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1016/S0370-2693(98)00635-2
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Inhaltszusammenfassung
Using linearly polarized tagged photons from coherent bremsstrahlung, differential cross sections and beam asymmetries for Compton scattering by He-4 have been measured at MAMI in the energy interval between 150 MeV and 500 MeV for scattering angles of theta(gamma)(lab) = 37 degrees, 93 degrees and 137 degrees, thus largely increasing the available data base. Improved calculations in terms of the Delta-hole model completely fail to describe the data at large scattering angles. The same proved...Using linearly polarized tagged photons from coherent bremsstrahlung, differential cross sections and beam asymmetries for Compton scattering by He-4 have been measured at MAMI in the energy interval between 150 MeV and 500 MeV for scattering angles of theta(gamma)(lab) = 37 degrees, 93 degrees and 137 degrees, thus largely increasing the available data base. Improved calculations in terms of the Delta-hole model completely fail to describe the data at large scattering angles. The same proved to be true for a schematic model, even after taking into account properties of nuclear photo-absorption in very detail. (C) 1998 Elsevier Science B.V. All rights reserved.» weiterlesen» einklappen
Autoren
Klassifikation
DFG Fachgebiet:
Teilchen, Kerne und Felder
DDC Sachgruppe:
Physik
