THE MECHANISM OF THE OPTOGALVANIC EFFECT IN A HOLLOW-CATHODE DISCHARGE R.A. Keller, B.E. Warner, E.F. Zalewski, P. Dyer, R. Engleman, Jr. and B.A. Palmer J. Phys. Colloques, 44 C7 (1983) C7-23-C7-33 DOI: 10.1051/jphyscol:1983702