Browsing by Author "Smith, Gerald J."

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    Absolute differential cross sections for electron capture and loss by keV hydrogen atoms
    (1990) Smith, Gerald J.; Stebbings, R. F.
    Absolute differential cross sections for electron capture and loss by neutral hydrogen atoms incident on various gases are presented. The measurements cover a laboratory angular range of 0.02$\sp\circ$ to 1.77$\sp\circ$ and a laboratory energy range of 2.0 to 5.0 keV. The target gases include H$\sb2$, O$\sb2$, N$\sb2$, Ar and He. Integrated experimental cross sections are compared with total cross sections reported by other investigators.
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    Low-energy elastic scattering of oxygen atoms by atmospheric species
    (1992) Smith, Gerald J.; Stebbings, R. F.
    This thesis reports measurements of absolute differential cross sections for elastic scattering of atomic oxygen at 0.5- and 1.5-keV laboratory energies. Measurements for targets of He, Ne, Ar, Kr, Xe, H$\sb2$, N$\sb2$, O$\sb2$, CO, CO$\sb2$, H$\sb2$O, CH$\sb4$, CF$\sb4$, SF$\sb6$, SO$\sb2$, and NH$\sb3$ are performed over a laboratory angular range of 0.2 to 5.0 degrees. Using a partial wave analysis, the cross sections for several targets are inverted and estimates of model interaction potentials are made. These potentials are then used to predict the elastic scattering cross sections at a laboratory energy of 100 eV.