TY - JOUR
ID - 169526
TI - Considerations on Spark- Gap Channel Radius and Electrical Conductivity
JO - Engineering and Technology Journal
JA - ETJ
LA - en
SN - 1681-6900
AU - Habib, Bassam H.
AD - Al- Mansour University College, Baghdad, Iraq
Y1 - 2020
PY - 2020
VL - 38
IS - 3B
SP - 168
EP - 176
KW - Channel radius
KW - Discharge plasmas
KW - Electric discharge
KW - Resistive phase
KW - Spark gap discharge resistance
DO - 10.30684/etj.v38i3B.1314
N2 - A simple phenomenological model is established to determine the temporal evolution of spark gap channel radius and electrical conductivity during the resistive phase period. The present determination is based on the Braginskii’s equation for the channel radius which includes the electrical conductivity of the discharge channel as a constant quantity. In the present model, however, the electrical conductivity is regarded as a time varyingquantity. Basing on this, a mathematical formulation for the channel radius as a function of time was derived, and this has made possible the derivation of an explicit expression for the conductivity as a function of time as well. Taking the temporal average of the electrical conductivity offers an alternative mathematical formulation for the instantaneous radius based on a steady conductivity value that can be determined according to some experimental parameters. It has been verified that both of the channel radius formulations mentioned above lead to similar results for the temporal evolution. The obtained results of the channel radius were used to determine the instantaneous inductance of the spark channel.The present model was used to examine the role of gas pressure and gap width on the temporal evolutions of the channel radius, conductivity, and inductance in nanosecond spark gaps
UR - https://etj.uotechnology.edu.iq/article_169526.html
L1 - https://etj.uotechnology.edu.iq/article_169526_f7e82a5b798b59322278915976d4b5ab.pdf
ER -