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

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dc.contributor.advisorDunning, F. B.
dc.creatorLancaster, James Campbell
dc.date.accessioned2009-06-04T07:02:23Z
dc.date.available2009-06-04T07:02:23Z
dc.date.issued1998
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.
dc.format.extent74 p.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS SP. SCI. 1998 LANCASTER
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>.
dc.identifier.urihttps://hdl.handle.net/1911/17237
dc.language.isoeng
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.
dc.subjectCondensed matter physics
dc.subjectAtomic physics
dc.titleA low-energy, electron-spin-polarized helium(+) ion source for use in surface studies
dc.typeThesis
dc.type.materialText
thesis.degree.departmentSpace Science
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Arts
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