ULTRAVIOLET RADIATION OF THE SURFACE DISCHARGE IS A PREIONIZER OF HIGH PRESSURE ATOMIC-MOLECULAR IMPURITIES A.E. Belyanko, N.I. Lipatov, P.P. Pashinin et A.M. Prokhorov J. Phys. Colloques, 40 C7 (1979) C7-505-C7-506 DOI: 10.1051/jphyscol:19797245