Estimation for the spot size of short gap discharge in near one atmospheric pressure

This paper proposed the method as an estimation on the size of discharge sp ots through observation on traces after the discharge arose in circumstance s gases mixed hydrocarbon gas. Namely, the circular carbonaceous deposit an d the carbonaceous heap are observed on cathode and anode surface, respecti vely, after the short gals discharge arises in N-2+NO+CH4 gases. The curren t density, which is the normal conversion current density, is calculated fr om the size of the trace of discharge and its value is about 1.0x10(-9) A/( cm(2).Pa-2) in case that the concentration of CH4 is 0.6%. The value is abo ut 1/5 of values that are reported in the former articles and is reasonable one.