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Brussel, M.K. Cannell, Lynell Earline 2011-07-05T19:32:54Z 2011-07-05T19:32:54Z 10000-01-01 1976 Nuclear resonant elastic photon scattering in the N=50 nuclei B8Sr, 89y , 90 and Zr was measured between 5 and 10 MeV excitation energy. Average elastic cross sections for natural targets were measured using tagged photons of resolution 60 to 150 keV and a NaI scintillation detector. Total cross sections were inferred from the elastic cross sections using assumptions of level density, distribution of widths, and average total width. Nuclear resonance fluorescence spectra were taken using incident bremsstrahlung with endpoint energies of 9.5 and 6.6 MeV and a Ge(Li) detector. Targets of natural Sr, y, and Zr and an enriched 90Zr target were used. Twelve nuclear levels in 90Zr three levels in another isotope of Zr, eleven levels in 88sr, and eleven levels in 89y were identified between 5 and 10 MeV. Values for gfo2/f were determined for each level and spins were deter-mined for eight of the levels. The nuclear resonance fluorescence results are compared with the measured average elastic cross sections. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-07-05T19:32:54Z No. of bitstreams: 1 1976_cannell.pdf: 4612148 bytes, checksum: e6051b03d0f6a697f74666e12bc58fe7 (MD5) Made available in DSpace on 2011-07-05T19:32:54Z (GMT). No. of bitstreams: 1 1976_cannell.pdf: 4612148 bytes, checksum: e6051b03d0f6a697f74666e12bc58fe7 (MD5) Previous issue date: 1976 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-07-05T19:32:54Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:32:43-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Thesis U of I Only 2444618 http://hdl.handle.net/2142/25666 en 1976 Lynell Earline Cannell resonant elastic photon scattering elastic cross sections nuclei incident bremsstrahlung Resonant elastic photon scattering from the nuclei 88Sr, 89Y, and 90Zr Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.