Browsing by Author "Sieglaff, Dean Ronald"

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    An atomic oxygen target for absolute differential cross section measurements
    (1992) Sieglaff, Dean Ronald; Stebbings, R. F.
    An atomic oxygen target suitable for absolute differential cross sections has been developed. Molecular oxygen gas is partially dissociated in a microwave discharge and flowed through a collision cell to serve as a fast beam target. Determination of the atomic oxygen density is carried out using an electron impact time-of-flight mass spectrometer, which uses the exit aperture of the cell as a sample leak.
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    The absolute differential cross-section for charge transfer scattering of 1.5 keV protons with atomic oxygen
    (1994) Sieglaff, Dean Ronald; Stebbings, R. F.
    The absolute cross section, differential in laboratory scattering angle, for the process $\rm H\sp{+} + O\to H + O\sp{+}$ using 1.5 keV-energy protons is reported. The total cross section value of (8.7 $\pm$ 1.9) $\times$ 10$\sp{-16}$ cm$\sp2$ derived from the integration of the differential cross section is compared with existing cross section data.