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dc.contributor.advisor Walters, G. King
dc.creatorOnellion, Marshall
dc.date.accessioned 2018-12-18T21:18:55Z
dc.date.available 2018-12-18T21:18:55Z
dc.date.issued 1981
dc.identifier.urihttps://hdl.handle.net/1911/104213
dc.description Text includes handwritten formulas
dc.description.abstract Surface science has a paucity of probes, particularly for spin-dependent studies. This thesis describes a 2 3S1 He probe, recently developed in this laboratory, that can be used for such investigations. There are three interaction mechanisms such a probe can undergo: resonance ionization/ Auger neutralization, Auger deexcitation, or surface Penning ionization. All are discussed and compared. The important concepts introduced include electronic transitions, factors affecting the interactions, variation of atomic energy levels, and the convolution problem. After introducing these concepts, and describing the resulting physical phenomena, the experimental apparatus is examined. The thesis delineates the rationale for a multi-chamber design and the problems encountered. One diagnostic, a Stern-Gerlach magnet used as a polarization analyzer, is particularly useful and is described in detail. By using the analyzer, we found the beam is approximately 5 percent polarized. Finally, several problems related to the first experiments are discussed.
dc.format.extent 105 pp
dc.language.iso eng
dc.title A spin-polarized He (2³S₁) metastable atom source for surface research
dc.identifier.digital RICE1841
dc.contributor.committeeMember Trammell, George T.;Dunning, F. Barry
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. 1981 Onellion
dc.identifier.citation Onellion, Marshall. "A spin-polarized He (2³S₁) metastable atom source for surface research." (1981) Master’s Thesis, Rice University. https://hdl.handle.net/1911/104213.


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