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oai:www.ideals.illinois.edu:2142/25578 2023-07-10 col_2142_8859 col_2142_5131 com_2142_8858 com_2142_234 com_2142_5130

Axel, P. Starr, Richard Douglas 2011-06-29T16:50:35Z 2011-06-29T16:50:35Z 10000-01-01 1979 Average elastic photon scattering cross sections were measured for 208Pb and 206Pb between 9.5 MeV and 12.0 MeV. The results indicate that there is a significant amount of fine structure in the photoabsorption cross section in 208pb in this energy region, but that 206pb has little or no fine structure. Three concentrations of strength in 208pb at 10.04, 10.60, and 11.27 MeV have been found to be mainly dipole. This is in disagreement with recent inelastic electron scattering results which claim that this strength is E2. Finally, the parity of the 7.06 MeV level in 208pb was measured . pane-polar1zed photons and was found to be Jpi = 1-. This using pions = contradicts an earlier, tentative assignment of Jpi = 1+, which implied that the 7.06 level was an important part of the giant magnetic dipole resonance 1n 208Pb. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-29T16:50:35Z No. of bitstreams: 1 1979_starr.pdf: 2544767 bytes, checksum: 79f6c4f0e26d091f41e28edca1fc3491 (MD5) Made available in DSpace on 2011-06-29T16:50:35Z (GMT). No. of bitstreams: 1 1979_starr.pdf: 2544767 bytes, checksum: 79f6c4f0e26d091f41e28edca1fc3491 (MD5) Previous issue date: 1979 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-29T16:50:35Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:32:26-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 358274 http://hdl.handle.net/2142/25578 en 1979 Richard Douglas Starr elastic photon scattering lead isotopes photoabsorption giant magnetic dipole resonance Elastic photon scattering in 208Pb and 206Pb Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.