Fragment emission following multiple ionization in 20-200-eV e{sup -}+H{sub 2}O collisions

Collisions between 16-200 eV electrons and H{sub 2}O target have been investigated experimentally. The fragment ions originating from single, double, and triple ionization were energetically analyzed at an observation angle of 90 deg. with respect to the incident beam direction. Fragments with energ...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2005-10, Vol.72 (4)
Main Authors: Fremont, F., Leclercq, C., Hajaji, A., Naja, A., Lemennais, P., Boulbain, S., Broquin, V., Chesnel, J.-Y.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
ELECTRON-ATOM COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ELECTRONS
EMISSION
EV RANGE
IONIZATION
MOLECULAR IONS
WATER
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Summary:Collisions between 16-200 eV electrons and H{sub 2}O target have been investigated experimentally. The fragment ions originating from single, double, and triple ionization were energetically analyzed at an observation angle of 90 deg. with respect to the incident beam direction. Fragments with energies as low as 0.1 eV were detected. From the spectra, cross sections for double and triple ionization, relative to single ionization cross sections, are derived. The present results are compared with previous experimental results involving several molecular targets, and with formulas that have been developed previously for electron-atom collisions.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.72.042702