1032 

 Argon-nitrogen mixture 6,6 o/o N 93,4 7o A, 



ps 



288 



273+^ 



Potential 

 in Volts 



ps 



288 



273+^ 



Potential 

 in Volts 



ps. 



288 



273+/ 



Potential 

 in Volts 



ps 



288 



273+/ 



Potential 

 in Volts 



373.67 

 341.92 

 306.66 

 282.54 



6248 

 5774 

 5298 

 4972 



1642 



1326 



888 



Pure argon. 



PSo^ 



288 



273+/ 



Potential 

 in Volts 



ps 



288 

 273+/ 



Potential 

 in Volts 



ps 



288 

 273+/ 



Potential 

 in Volts 



ps 



288_ 

 273+/ 



Potential 

 in Volts 



202.48 

 190.57 



1138 

 1113 



86.23 

 76.44 



255 



Fig. 5, 



Our results on argon, nitrogen and the mixtures are combined in 

 figs 5 and 6. Fig. 6 shows the large influence of small admixtures 

 of nitrogen on the sparking-potential, especially at the higher pressures. 

 Qualitatively our measurements on mixtures agree with those of 



BOUTY. 



