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Phys. Rev. A 71, 010702(R) (2005) [4 pages]

Evidence for interference effects in both slow and fast electron emission from D2 by energetic electron impact

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O. Kamalou1, J.-Y. Chesnel1, D. Martina1, J. Hanssen2, C. R. Stia3, O. A. Fojón3,4, R. D. Rivarola3,4, and F. Frémont1
1Centre Interdisciplinaire de Recherche Ions Lasers, Unité Mixte CEA-CNRS-EnsiCaen-Université de Caen Basse Normandie, 6 Boulevard du Mal Juin, F-14050, Caen Cedex 4, France
2Institut de Physique, Laboratoire de Physique Moléculaire et des Collisions, Université de Metz, Technopôle 2000, 1 Boulevard Arago, 57078 Metz Cedex 3, France
3Instituto de Física Rosario, CONICET–Universidad Nacional de Rosario, Aenidav. Pellegrini 250, 2000 Rosario, Argentina
4Escuela de Ciencias Exactas y Naturales, Universidad Nacional de Rosario, Rosario, Argentina

Received 19 July 2004; published 6 January 2005

Interference patterns due to the coherent electron emission from the atomic centers of a D2 molecule by fast electron impact are experimentally observed in doubly differential cross sections. This behavior is supported by theoretical predictions. Measurements are given for the impact of 2.4 keV electrons. The emitted electrons are detected in the energy range from 2 to 2000 eV, at observation angles between 30° and 130°. In addition to the interference phenomenon in electron emission following soft collisions, it is shown that interference effects appear for ejected electron energies corresponding to the binary-encounter mechanism.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.010702
DOI:
10.1103/PhysRevA.71.010702
PACS:
34.80.Gs, 03.75.-b, 31.15.-p, 34.10.+x
 
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