Note: computational estimation of sparkgap inductance in nitrogen medium.
In this Note, attempt has been made to analytically derive the inductance of a sparkgap arc channel using fundamental circuit theory, heat transfer theory, and gas plasma equations. Simulation of a picosecond phenomenon of arc channel formation is attempted using coupled codes. Arc channel is assumed to be cylindrical and modeled as finite number of small coaxial cylinders filled with gas plasma. Conductivity of each gas plasma cylinder is found by its temperature. Current distribution in the cylinders is calculated using circuit theory and change in the current distribution with time is simulated. Over all inductance of the arc channel is computed for the current density distribution. Simulation is done for fast sub-nanosecond rising pulse. Experiments are conducted to measure the arc channel inductance and validate the same with the value found using computation.
APPD, BARC, Trombay, Mumbai, India.
S
S
Mitra
APPD, BARC, Trombay, Mumbai, India.
Sandeep
S
Singh
APPD, BARC, Trombay, Mumbai, India.
Ranjeet
R
Kumar
APPD, BARC, Trombay, Mumbai, India.
Archana
A
Sharma
APPD, BARC, Trombay, Mumbai, India.
K C
KC
Mittal