Аңдатпа
The analytical relations for determination of cathode surface field-emission parameters of field amplification factor /spl beta/ and work function /spl phi/ from experiments of vacuum breakdown delay time have been obtained. Field amplification factor is shown to take minimal value /spl beta/=1 at critical electrical field E/sub /spl sigma//=1.32/spl times/10/sup 10/ V/m. Vacuum breakdown delay time corresponding to critical field is determined by cathode material physical constants.