Collins asymmetry in field ionisation of hydrogen

1 IPNL - Institut de Physique Nucléaire de Lyon 2 Université de M-sila 3 LPMPS - Laboratoire de Physique Mathématique et Subatomique

Abstract : An effect similar to the Collins asymmetry is found in the ionization of a hydrogen atom by a static electric field $\Ev$. When the initial electron possesses an orbital angular momentum $\langle\mathbf{L} angle$ transverse to the field, the mean transverse velocity $\langle\vv { m T} angle$ of the final electron points in the direction of $\Ev\times\langle\mathbf{L} angle$. However $\langle\mathbf{L} angle$ is oscillating in time due to the linear Stark effect, making $\langle\vv { m T} angle$ oscillate.

Author: X. Artru - E. Redouane-Salah -

Source: https://hal.archives-ouvertes.fr/