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- W2492722702 abstract "This paper presents the results of an investigation into the optical intensity and fluence emitted by spark discharges as a function of energy dissipation in the spark gap. Optical fluence is defined as the integral of light intensity with respect to time. The experiments reported here involve sparks generated by high-voltage energy stored in fixed capacitors. These results will be used to develop a theory that relates spark energy to emitted light. The ultimate goal of the work is to develop a reliable method for measuring and predicting the energies of sparks that originate on insulating surfaces. Experiments were conducted in air at atmospheric pressure for capacitive discharges between two 32-mm diameter brass spheres at stored energies ranging from 5 to 400 mJ, gap lengths ranging from 0.5 to 3.5 mm, and capacitor values ranging between 1.1 and 4.4 nF. Simultaneous measurements of discharge current and emitted light intensity were made using a current transformer and a silicon photodiode detector, respectively. These measurements indicate that the instantaneous light intensity is nearly proportional to the magnitude of the discharge current. Under the assumption that the total spark energy is proportional to the energy stored in the capacitors, the results show that the optical fluence varies almost linearly with where C is capacitance and Vb is the breakdown voltage of the spark gap. The relationship between the optical fluence and the product of Vb and the integral with respect to time of the squared discharge current was also found to be nearly linear. The latter is related to the electrical power delivered to the spark." @default.
- W2492722702 created "2016-08-23" @default.
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- W2492722702 date "2004-05-01" @default.
- W2492722702 modified "2023-09-26" @default.
- W2492722702 title "Measurement of Optical Intensity and Fluence Generated by Spark Discharges" @default.
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- W2492722702 doi "https://doi.org/10.1201/9781420034387.ch24" @default.
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