Shock Wave from a Four-Meter Spark
- 1 June 1970
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 41 (7) , 3148-3155
- https://doi.org/10.1063/1.1659378
Abstract
The shock wave emitted by a 4‐m spark of energy 2×104 J has been measured at distances from spark midgap of between 0.34 and 16.5 m. Close to the spark, a single dominant shock wave is observed; farther from the spark, a number of significant shock waves (generally 3 or 4) are observed. For distances less than 2 m, both the shock overpressure and the duration of the overpressure are between a factor of 1.5 to 5 less than predicted by cylindrical shock‐wave theory. The discrepancies between the experimental data and cylindrical shock‐wave theory are partially explained by consideration of the spark channel tortuosity.This publication has 8 references indexed in Scilit:
- Power spectrum of thunderJournal of Geophysical Research, 1969
- Four-Meter Sparks in AirJournal of Applied Physics, 1968
- Peak power and energy dissipation in a single-stroke lightning flashJournal of Geophysical Research, 1968
- Acoustic Radiation from a Finite Line Source with N-Wave ExcitationThe Journal of the Acoustical Society of America, 1968
- Acoustic output of a long sparkJournal of Geophysical Research, 1968
- Temperature and Electron Density in Long Air SparksJournal of Applied Physics, 1967
- A Determination of the Wave Forms and Laws of Propagation and Dissipation of Ballistic Shock WavesThe Journal of the Acoustical Society of America, 1946
- Supersonic dispersion in gases II. Air containing water vapourProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1945