Eur. Phys. J. D 42, 189-196 (2007)
https://doi.org/10.1140/epjd/e2007-00020-2

Electron flux distributions in photodetachment of H^- in parallel electric and magnetic fields

¹ College of Physics and Electronics, Shandong Normal University, Jinan, 250014, P.R. China
² School of Physics and Electronic Information, Wenzhou University, Wenzhou, 325027, P.R. China
³ Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China

Corresponding author: ^a sllin@sdnu.edu.cn

Received: 11 April 2006
Revised: 30 November 2006
Published online: 31 January 2007

Abstract

Photo-detached electrons of negative hydrogen ion in parallel electric and magnetic fields show quite complicated classical dynamical behavior, and a sequence of bifurcation and anti-bifurcation occurs. We investigate the effects of bifurcations on the flux distribution of photo-detached electrons by using position and momentum diagrams. Detached-electron flux distributions are calculated based on a uniform semi-classical theory. The flux distributions exhibit patterns with multiple rings. The bright rings correspond to special points in the diagrams. The flux distributions can be controlled by adjusting the magnetic field strength while fixing the electric field.