The energy distributions of positrons scattered around 0° from H 2O have been measured in coincidence with the remnant ions (H 2O+, OH+ and H+) at 100 eV and 153 eV incident energies. The maxima of the distributions (d2σ/ dE+dΩ) associated with the production of OH+ and H+ are about 5-10 times smaller than that for H2O +. At both incident energies, a small shoulder has been observed at ∼28 eV in the energy loss spectra associated with H2O+ production possibly arising from a shake-up band associated with the 2a 1 orbital. The branching ratios for the H+ and HO + fragments are also presented.
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Publication status||Published - Apr 9 2009|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics