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Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors
Published on: December 6, 2018
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Note: computational estimation of sparkgap inductance in nitrogen medium.
S Mitra1, Sandeep Singh1, Ranjeet Kumar1
1APPD, BARC, Trombay, Mumbai, India.
The Review of Scientific Instruments
|May 3, 2014
Summary
Researchers analytically derived spark gap arc channel inductance using circuit and plasma theories. Simulations of picosecond arc formation validated experimental measurements for fast-rising pulses.
Area of Science:
- Plasma Physics
- Electrical Engineering
- Computational Electromagnetics
Background:
- Accurate inductance calculation is crucial for understanding high-speed electrical discharge phenomena.
- Spark gap arc channels exhibit complex, time-varying electrical and thermal properties.
- Previous models often simplified the dynamic nature of arc channel formation and inductance.
Purpose of the Study:
- To analytically derive the inductance of a spark gap arc channel.
- To simulate the picosecond phenomenon of arc channel formation using coupled codes.
- To validate computational results with experimental measurements.
Main Methods:
- Modeling the arc channel as coaxial cylinders filled with gas plasma.
- Calculating plasma conductivity based on temperature and simulating current distribution over time using circuit theory.
- Employing coupled codes for picosecond-scale simulation of arc channel formation and inductance computation.
Main Results:
- Successfully computed the overall inductance of the arc channel based on simulated current density distribution.
- Demonstrated simulation of arc channel formation for fast sub-nanosecond rising pulses.
- Experimental measurements of arc channel inductance validated the computed values.
Conclusions:
- The analytical and computational approach provides a viable method for determining spark gap arc channel inductance.
- The simulation accurately captures the dynamic behavior of arc channel formation.
- Experimental validation confirms the reliability of the derived inductance values for high-speed pulse applications.
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