2019
DOI: 10.1063/1.5078580
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Influence of the formation of a bi-Maxwellian distribution on volumetric recombining plasma spectroscopy

Abstract: Determination of the electron temperature Te and electron density ne is indispensable for evaluating the reaction rates of various atomic and molecular processes. In our numerical work, it was reported that a Boltzmann plot could yield considerably underestimated values of Te and ne when electrons form a bi-Maxwellian distribution [H. Takahashi et al., Contrib. Plasma Phys. 57, 322 (2017)]. To confirm this, helium volumetric recombining plasma spectroscopy was conducted with the DT-ALPHA device. It was found t… Show more

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Cited by 2 publications
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“…Electric probes are among the most reliable diagnostic tools among the contact methods used to measure plasma parameters with sufficiently high temporal and spatial resolution in various devices [10 -16], including tokamaks and stellarators [17,18]. Sometimes, when the electron energy distribution function (EEDF) consists of a bi-Maxwellian with well-separated temperatures [17 -19], the two temperatures can be obtained by straightline fits on the semi-logarithmic discharge-voltage characteristic.…”
Section: Introductionmentioning
confidence: 99%
“…Electric probes are among the most reliable diagnostic tools among the contact methods used to measure plasma parameters with sufficiently high temporal and spatial resolution in various devices [10 -16], including tokamaks and stellarators [17,18]. Sometimes, when the electron energy distribution function (EEDF) consists of a bi-Maxwellian with well-separated temperatures [17 -19], the two temperatures can be obtained by straightline fits on the semi-logarithmic discharge-voltage characteristic.…”
Section: Introductionmentioning
confidence: 99%