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Author Delli Carpini, D. ♦ Booth, E. C. ♦ Miller, J. P. ♦ Igarashi, R. ♦ Bergstrom, J. ♦ Caplan, H. ♦ Doss, M. ♦ Hallin, E. ♦ Rangacharyulu, C. ♦ Skopik, D. ♦ Lucas, M. A. ♦ Nathan, A. M. ♦ Wells, D. P.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword NUCLEAR PHYSICS AND RADIATION PHYSICS ♦ HELIUM 4 TARGET ♦ PHOTONUCLEAR REACTIONS ♦ COHERENT SCATTERING ♦ ANGULAR DISTRIBUTION ♦ DELTA-1232 BARYONS ♦ DIFFERENTIAL CROSS SECTIONS ♦ ISOBAR MODEL ♦ MEV RANGE 100-1000 ♦ BARYONS ♦ CROSS SECTIONS ♦ DELTA BARYONS ♦ DISTRIBUTION ♦ ELEMENTARY PARTICLES ♦ ENERGY RANGE ♦ FERMIONS ♦ HADRONS ♦ MATHEMATICAL MODELS ♦ MEV RANGE ♦ N BARYONS ♦ NUCLEAR REACTIONS ♦ PARTICLE MODELS ♦ SCATTERING ♦ TARGETS ♦ Nuclear Properties & Reactions, A=1-5, Experimental
Abstract The angular distributions for coherent photon scattering from {sup 4}He were measured at average laboratory bremsstrahlung energies of 187, 235, and 280 MeV. The experiment was performed at the Saskatchewan Accelerator Laboratory using the new high duty factor electron beam. The scattered photons were observed with a high-resolution NaI(Tl) total absorption scintillation detector. These measurements are intended to investigate modification of the {Delta} properties inside the nuclear medium and the treatment of nonresonant contributions to the scattering cross sections. The results are compared to theoretical calculations in the isobar-hole model. Clear deviations from the theory are evident at all energies, especially at 187 MeV.
ISSN 05562813
Educational Use Research
Learning Resource Type Article
Publisher Date 1991-04-01
Publisher Place United States
Journal Physical Review, C
Volume Number 43
Issue Number 4


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