Show simple item record

dc.contributor.advisor Walters, G. King
dc.creatorHodge, Lee Allen
dc.date.accessioned 2018-12-18T21:18:25Z
dc.date.available 2018-12-18T21:18:25Z
dc.date.issued 1977
dc.identifier.urihttps://hdl.handle.net/1911/104179
dc.description No page 28
dc.description.abstract This thesis describes the design, construction and operation of an intense source of polarized electrons suitable for application to most proposed scattering experiments. Polarized electrons are produced in a flowing helium afterglow apparatus by chemiionization reactions involving optically pumped helium 2 S metastables. These electrons are electrostatically extracted from the flow tube and formed into a beam. The electron spin polarization is measured by a unique "on-line" Mott scattering polarization analyzer designed and constructed as an integral source component. In this thesis, applications for a polarized electron beam are reviewed and a comparison of the best available sources is made. The operation of the optically pumped flowing helium afterglow source is described in detail and current and polarization performance characteristics are reported: .1 pA at 5% polarization; 1 juA at 45%; 5 juA at 3% and 1 JJA at 2%. Measurements of the beam emittance show it to be very low (2 mrad-cm at 4 eV). Significant advantages of this source are the ease of electron spin reversal or modulation without a change in beam trajectory and the novel "on-line" Mott detector which allows simultaneous polarization analysis and low energy beam use. Several proposed experiments are suggested with a report on progress to date.
dc.format.extent 102 pp
dc.language.iso eng
dc.title A high intensity polarized electron source with on-line polarization analysis
dc.identifier.digital RICE1806
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Physics
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Arts
dc.format.digitalOrigin reformatted digital
dc.identifier.callno Thesis Phys. 1977 Hodge
dc.identifier.citation Hodge, Lee Allen. "A high intensity polarized electron source with on-line polarization analysis." (1977) Master’s Thesis, Rice University. https://hdl.handle.net/1911/104179.


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record