THE INVESTIGATION OF FIELD IONIZATION PROCESS OF He GAS ABOVE THE SEPARATE SURFACE ATOMS OF TUNGSTEN EMITTERS W. E. LENKOW et M. S. GLOWACKIJ. Phys. Colloques, 47 C7 (1986) C7-47-C7-51DOI: https://doi.org/10.1051/jphyscol:1986709
