A low-energy, electron-spin-polarized helium(+) ion source for use in surface studies

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dc.contributor.advisorDunning, F. B.en_US
dc.creatorLancaster, James Campbellen_US
dc.date.accessioned2009-06-04T07:02:23Zen_US
dc.date.available2009-06-04T07:02:23Zen_US
dc.date.issued1998en_US
dc.description.abstractA spin polarized He$\sp+$ ion source has been developed to study the dynamics of ion-surface interactions. The He$\sp+$ ions are produced by Penning ionization in collisions between electron-spin-polarized He(2$\sp3$S) metastable atoms contained in a weak rf-excited discharge. The ions are extracted from the discharge and focused onto clean or adsorbate-covered surfaces using a series of electrostatic lenses. The impact energy can be varied from $\rm{<}10eV$ to $\rm{\ge}650eV$ and typical beam polarizations are 10-15%. Information about ion/surface interactions, and the dependence of those interactions on the incident ion energy, is obtained by measuring the energy distribution and polarization of electrons ejected from the surface as a result of Auger neutralization.en_US
dc.format.extent74 p.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.callnoTHESIS SP. SCI. 1998 LANCASTERen_US
dc.identifier.citationLancaster, James Campbell. "A low-energy, electron-spin-polarized helium(+) ion source for use in surface studies." (1998) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/17237">https://hdl.handle.net/1911/17237</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/17237en_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.subjectAtomic physicsen_US
dc.titleA low-energy, electron-spin-polarized helium(+) ion source for use in surface studiesen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentSpace Scienceen_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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