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 Title: Higher-order effects in the elastic scattering of electrons and positrons from lead-208 and carbon-12 Author(s): Linzey, Andrew Joseph Doctoral Committee Chair(s): Nathan, Alan M. Department / Program: Physics Discipline: Physics Degree Granting Institution: University of Illinois at Urbana-Champaign Degree: Ph.D. Genre: Dissertation Subject(s): Physics, Nuclear Abstract: Here we report on a precise study of the ratio of elastic scattering cross sections of electrons and positrons from $\sp{12}$C and $\sp{208}$Pb, in an effort to observe and quantify deviations from the predictions of a phase shift calculation of the scattering from a static charge density. Any deviations observed can be attributed to higher-order processes sensitive to the sign of the charge of the scattered particle. The beam energies were $\sim$450 MeV and the angular ranges covered were 26-37$\sp\circ$ for $\sp{12}$C and 26-53$\sp\circ$ for $\sp{208}$Pb. No deviations were observed within the uncertainties of the measurement. Issue Date: 1993 Type: Text Language: English URI: http://hdl.handle.net/2142/21347 Rights Information: Copyright 1993 Linzey, Andrew Joseph Date Available in IDEALS: 2011-05-07 Identifier in Online Catalog: AAI9411693 OCLC Identifier: (UMI)AAI9411693
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