Photodetachment of hydrogen negative ion near inelastic surfaces: Arbitrary laser polarization direction

The photodetachment of hydrogen negative ionH −near different inelastic surfaces is investigated by the semiclassical closed orbit theory for arbitrary laser polarization directionθ L . A two‐term formula of photodetachment cross section consisting of a smooth background term and an oscillatory term is derived. The oscillatory term contains an extra angular factorcos 2 ( θ L )   that describes the dependence of oscillations in total cross section on the laser polarization direction. It is observed that the amplitude of oscillations in cross section reaches maximum atθ L = 0 when laser polarization is parallel to the z ‐axis and it approaches zero as the laser polarization direction becomes perpendicular to the z ‐axis. It is also observed that as the reflection coefficient α , which accounts for the inelastic behavior of the surfaces, increases the amplitude of oscillation also increases. © 2015 Wiley Periodicals, Inc.