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Real-time phase-selective data acquisition system for measurement of wave phenomena in pulsed plasma discharges

Sanders, S. J. and Stern, R. A. and Bellan, P. M. (1998) Real-time phase-selective data acquisition system for measurement of wave phenomena in pulsed plasma discharges. Review of Scientific Instruments, 69 (5). pp. 2027-2031. ISSN 0034-6748. http://resolver.caltech.edu/CaltechAUTHORS:SANrsi98

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Abstract

A novel data acquisition system and methodology have been developed for the study of wave phenomena in pulsed plasma discharges. The method effectively reduces experimental uncertainty due to shot-to-shot fluctuations in high repetition rate experiments. Real-time analysis of each wave form allows classification of discharges by wave amplitude, phase, or other features. Measurements can then be constructed from subsets of discharges having similar wave properties. The method clarifies the trade-offs between experimental uncertainty reduction and increased demand for data storage capacity and acquisition time. Finally, this data acquisition system is simple to implement and requires relatively little equipment: only a wave form digitizer and a moderately fast computer.


Item Type:Article
Additional Information:©1998 American Institute of Physics. (Received 11 August 1997; accepted 15 January 1998) The authors thank Frank Cosso for construction of the time-delay generator and other technical assistance. This work was supported by NSF Grant No. PHY-9413046.
Subject Keywords:plasma diagnostics; data acquisition; physics computing; plasma fluctuations; discharges (electric); wave propagation; jitter; real-time systems
Record Number:CaltechAUTHORS:SANrsi98
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:SANrsi98
Alternative URL:http://dx.doi.org/10.1063/1.1148893
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6947
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:03 Jan 2007
Last Modified:26 Dec 2012 09:27

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