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Eisenstein, Robert A. Wells, Douglas Patrick 2011-05-07T12:17:33Z 2011-05-07T12:17:33Z 10000-01-01 1990 Elastic photon scattering cross sections were measured for $\sp4$He at 45 and 135 degrees. These measurements were performed at energies between 23 and 73 MeV using the University of Illinois tagged photon facility. The principal contributions to the scattering in this energy range are the nuclear giant resonances at lower energies and the coherent scattering from bound nucleons and nucleon pairs at higher energies. The data collected in this experiment place constraints on the peak photoabsorption of the giant dipole resonance, which has been in dispute, and place limits on the electromagnetic polarizabilities of the bound nucleon in $\sp4$He. Made available in DSpace on 2011-05-07T12:17:33Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9026348.pdf: 3323538 bytes, checksum: 0c034c619490201993663a3dfcd778f3 (MD5) Previous issue date: 1990 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:39:13Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:16:28-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9026348 (UMI)AAI9026348 http://hdl.handle.net/2142/19756 eng Copyright 1990 Wells, Douglas Patrick Physics, Nuclear Elastic photon scattering from helium-4 between 23 and 73 MeV text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.