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dc.contributor.advisorTribble, R. E.
dc.creatorTanner, Danelle Mar
dc.descriptionTypescript (photocopy).en
dc.description.abstractA measurement of parity-violation in proton-proton scattering at 47 MeV has been completed by observing the longitudinal analyzing power (DIAGRAM, TABLE OR GRAPHIC OMITTED...PLEASE SEE DAI) where (sigma)('+)((sigma)('-)) is the scattering cross section for positive (negative) helicity. Polarized protons from an atomic beam ion source were accelerated by the 224-cm Texas A&M University cyclotron to an energy of 50 MeV, producing a vertically polarized beam. A superconducting solenoid magnet precessed the beam polarization into the horizontal plane after which a 47.6(DEGREES) bending magnet precessed the polarization into the longtitudinal direction (p(,z) = 0.69 (+OR-) 0.02). RF transitions reversed the polarization direction every 21 msec. Protons scattered from the high pressure ((DBLTURN)37 atm), 42-cm long H(,2) gas target were detected by four plastic scintillators located in the target chamber. Photomultiplier tubes amplified the light from the scintillators, providing a signal proportional to the scattered beam intensity. A lock-in amplifier (LIA) synchronized to the spin-flip frequency compared the scattered intensity to the total beam intensity, measured with a Faraday cup. The output of the LIA was integrated for one second and then read by an ADC. Polarimeters were used to monitor both beam intensity and polarization profiles. A series of tests were performed to determine the role of spurious asymmetries due to changes in beam position and angle, and due to beam intensity modulations correlated with the spin reversal. The result after correction for beam intensity modulation was A(,z) = -(4.6 (+OR-) 2.6) x 10('-7). A more conservative result, taking into account all of the possible spurious asymmetries was A(,z) = -(4.6 (+OR-) 4.2) x 10('-7).en
dc.format.extentx, 103 leavesen
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.subject.classification1983 Dissertation T166
dc.subject.lcshParity nonconservationen
dc.subject.lcshScattering (Physics)en
dc.titleParity violation in proton-proton scattering at 47 MeVen
dc.typeThesisen A&M Universityen of Philosophyen D. in Philosophyen
dc.contributor.committeeMemberFord, A. L.
dc.contributor.committeeMemberNatowitz, J. B.
dc.contributor.committeeMemberYoungblood, D. H.
dc.format.digitalOriginreformatted digitalen
dc.publisher.digitalTexas A&M University. Libraries

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