Eur. Phys. J. D 61, 51-55 (2011)
https://doi.org/10.1140/epjd/e2010-10484-4

Lowest lying ¹D^e resonance of H^- in Debye plasma

Department of Physics, Maheshtala College, Budge Budge Trunk Road, Kolkata 700141, West Bengal, India

Corresponding author: ^a arindambasu@hotmail.com

Received: 1 September 2010
Revised: 29 September 2010
Published online: 3 December 2010

Abstract

Electron-hydrogen scattering has been investigated in Debye plasma environment employing the close-coupling approximation. Two models, viz., 6-state CCA and 9-state CCA have been used. Plasma screening has been taken into account via Debye-Hückel model potential. The lowest lying auto-detaching resonance of the hydrogen negative ion has been successfully predicted for various plasma conditions. The resonant state changes to shape resonance for Debye scattering lengths less than a critical value.