2 research outputs found
An atomic oxygen target for absolute differential cross section measurements
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
The absolute differential cross-section for charge transfer scattering of 1.5 keV protons with atomic oxygen
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 1.9) 10\sp{-16} cm\sp2 derived from the integration of the differential cross section is compared with existing cross section data