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

O. KAMALOU; J.-Y. CHESNEL; D. MARTINA; F. FRÉMONT; J. HANSSEN; C. R. STIA; O. A. FOJÓN; R. D. RIVAROLA

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

The American Physical Society

Lugar: New York; Año: 2005 vol. 71 p. 107021 - 107024

1050-2947

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.