The proton Compton effect: A measurement of the electric and magnetic polarizabilities of the proton
Federspiel, Fred J.
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https://hdl.handle.net/2142/19131
Description
Title
The proton Compton effect: A measurement of the electric and magnetic polarizabilities of the proton
Author(s)
Federspiel, Fred J.
Issue Date
1991
Doctoral Committee Chair(s)
Eisenstein, Robert A.
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Nuclear
Language
eng
Abstract
The Compton scattering cross section on hydrogen was measured at 60$\sp\circ$ and 135$\sp\circ$ in order to determine the largely unknown electric and magnetic polarizabilities of the proton. The cross sections were measured using tagged photons spanning 32 through 72 MeV in energy. In this energy range, the forward scattering cross section is well constrained by model-independent theory and was measured to check the systematics of our experimental and data reduction procedures. Within the statistical errors, the measured forward cross section agrees with theory. The following values for the polarizabilities are extracted from the measured cross sections: $\bar\alpha = (10.1 \pm 2.2 \pm 1.4)\cdot 10\sp{-4}fm\sp3$ and $\bar\beta = (4.1 \mp 2.2 \mp 1.4)\cdot 10\sp{-4}fm\sp3$, where the errors shown are statistical and systematic, respectively.
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