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dc.contributor.advisor Dunning, F. B.
dc.creatorMagugumela, Maurice Todani
dc.date.accessioned 2009-06-04T00:33:22Z
dc.date.available 2009-06-04T00:33:22Z
dc.date.issued 1994
dc.identifier.urihttps://hdl.handle.net/1911/13864
dc.description.abstract A spin-polarized low-energy electron gun with high current transmission is described here and has been applied to SPEELS studies. Current transmission in excess of 40% is routinely achieved. This is a dramatic improvement compared with the $\sim$1% transmission obtained using an earlier electron gun. The high current transmission has allowed SPEELS studies of energy loss mechanisms in low-energy electron scattering from atomically clean metallic surfaces. There are two dominant energy loss mechanisms: dipole scattering which occurs in the vacuum outside the target and impact scattering via electron-hole pair excitation occurring inside the target surface. Preliminary results of SPEELS experiments on Cu(100) and Ag(100) surfaces and on thin films of Mo, Co, and Fe epitaxially grown on a Cu(100) are presented.
dc.format.extent 81 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectCondensed matter physics
dc.title Design and testing of a low-energy spin-polarized electron gun and its application to SPEELS
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.identifier.citation Magugumela, Maurice Todani. "Design and testing of a low-energy spin-polarized electron gun and its application to SPEELS." (1994) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13864.


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