A K Edwards et al 1999 J. Phys. B: At. Mol. Opt. Phys. 32 3985 doi:10.1088/0953-4075/32/15/326
Excitation of the 2p
u state of H2+ as a function of energy loss
A K Edwards
, Q Zheng
, M A Mangan and R M Wood
The relative cross section for the excitation of the 2pu state of H2+ by 400 eV electrons as a function of energy loss has been measured and calculated. Electrons scattered at 18° with energy losses ranging from 30 to 72 eV were detected in coincidence with H+ ions of 7.7 eV. The H+ ions were detected at 72° relative to the beam direction. Because of the rapid dissociation of the excited state, it follows that the detected ions were produced by target H2 molecules with internuclear axes oriented at 72°. The relative cross sections were calculated using prolate spheroidal coordinates and fitted to the data with one parameter. The general shape of the energy-loss curve is in agreement with the measurements.
- PACS
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34.50.Gb Electronic excitation and ionization of molecules
- Subjects
- Dates
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Issue 15 (14 August 1999)
Received 25 May 1999, in final form 30 June 1999
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Excitation of the 2pu state of H2+ as a function of energy loss
A K Edwards et al 1999 J. Phys. B: At. Mol. Opt. Phys. 32 3985
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