The effect of internal energy on the lifetime of sulfur hexafluoride negative ions

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dc.contributor.advisorDunning, F. B.
dc.creatorCannon, Matt
dc.date.accessioned2009-06-03T21:13:04Z
dc.date.available2009-06-03T21:13:04Z
dc.date.issued2007
dc.description.abstractThe lifetimes of SF-6 ions produced in K(np)/SF6 collisions at high n are being investigated as a function of target temperature over the range 300K to 600K. At room temperature collisions are found to lead predominantly to the formation of long-lived SF-6 ions with lifetimes tau ≳ 1ms. As the target temperature is raised long-lived (tau ≳ 0.5ms) ions are still observed but their mean lifetime is reduced. In addition, the growth of a short-lived ion signal (tau ≳ 10 mus) is evident which, by 600K, accounts for ∼45% of the total SF-6 ion signal. These lifetimes are compared with those obtained using quasi-equilibrium theory and calculated SF-6 vibrational frequencies.
dc.format.extent81 p.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS PHYS. 2007 CANNON
dc.identifier.citationCannon, Matt. "The effect of internal energy on the lifetime of sulfur hexafluoride negative ions." (2007) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/20495">https://hdl.handle.net/1911/20495</a>.
dc.identifier.urihttps://hdl.handle.net/1911/20495
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.subjectPhysical chemistry
dc.subjectMolecular physics
dc.subjectAtomic physics
dc.titleThe effect of internal energy on the lifetime of sulfur hexafluoride negative ions
dc.typeThesis
dc.type.materialText
thesis.degree.departmentPhysics
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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