Experimental and Theoretical Study of Electron-Impact Ionization plus Excitation of Aligned H₂
We report quadruple differential cross sections for electron-impact ionization of H2 with simultaneous excitation of the H +2 ion which will immediately dissociate. The alignment of the molecule is determined by detecting the emitted proton. The first measurements of this type were recently reported (2013 Phys. Rev. A 88 062705). Here we report measurements with much better angular resolution using the COLTRIMS method. Experimental results are compared with molecular 4-body distorted wave calculations and reasonably good agreement between experiment and theory is found.
E. Ali et al., "Experimental and Theoretical Study of Electron-Impact Ionization plus Excitation of Aligned H₂," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 48, no. 11, Institute of Physics Publishing, Apr 2015.
The definitive version is available at https://doi.org/10.1088/0953-4075/48/11/115201
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01 Apr 2015