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Author ORCID Identifier
N/A
AccessType
Open Access Dissertation
Document Type
dissertation
Degree Name
Doctor of Philosophy (PhD)
Degree Program
Physics
Year Degree Awarded
2014
Month Degree Awarded
February
First Advisor
Krishna Kumar
Second Advisor
Andrea Pocar
Third Advisor
John Dubach
Subject Categories
Nuclear | Plasma and Beam Physics
Abstract
The Lead Radius Experiment (PREX) was carried out in order to provide a model independent measurement of the RMS radius √ < r2 >of the neutron distribution in the 208Pb nucleus. The parity-violating scattering asymmetry for longitudinally polarized 1.06 GeV electrons from an unpolarized 208Pb target was measured at Q2 = 0.00880 GeV2. This measurement was performed by the PREX collaboration in Hall A at Jefferson Laboratory in Newport News, VA, between March and June, 2010. The electron detectors used in this measurement were designed and fabricated by University of Massachusetts-Amherst and Smith College. The resulting parity-violating asymmetry was measured as APV = 656±60(stat.)±14(sys.) ppb. This asymmetry extrapolates to a difference in radii between the nuclear neutron and proton distributions of √ < r2n >- √ < r2p >=0.33 +0.16 −0.18 fm.
DOI
https://doi.org/10.7275/5987597.0
Recommended Citation
Wexler, Jonathan W., "Measurement of the Parity Violating Asymmetry in Elastic Electron Scattering off 208Pb" (2014). Doctoral Dissertations. 246.
https://doi.org/10.7275/5987597.0
https://scholarworks.umass.edu/dissertations_2/246