Design and testing of a low-energy spin-polarized electron gun and its application to SPEELS

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dc.contributor.advisorDunning, F. B.en_US
dc.creatorMagugumela, Maurice Todanien_US
dc.date.accessioned2009-06-04T00:33:22Zen_US
dc.date.available2009-06-04T00:33:22Zen_US
dc.date.issued1994en_US
dc.description.abstractA 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.en_US
dc.format.extent81 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS PHYS. 1994 MAGUGUMELAen_US
dc.identifier.citationMagugumela, Maurice Todani. "Design and testing of a low-energy spin-polarized electron gun and its application to SPEELS." (1994) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/13864">https://hdl.handle.net/1911/13864</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/13864en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectCondensed matter physicsen_US
dc.titleDesign and testing of a low-energy spin-polarized electron gun and its application to SPEELSen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentPhysicsen_US
thesis.degree.disciplineNatural Sciencesen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US
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