| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Laser Heated Emissive Probes Design and Development under National Fusion Program and Potential Measurement |
| MEHTA Payal1, SARMA Arun2**, GHOSH Joydeep3 |
1Venus International College of Technology, Gandhinagar, Gujarat, India
2School of Advanced Sciences, VIT University Chennai, Vandalur-Kelambakkam Road, Chennai 600127, India
3Institute for Plasma Research, Bhat, Gandhinagar 382428, Gujarat, India
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| Cite this article: |
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MEHTA Payal, SARMA Arun, GHOSH Joydeep 2014 Chin. Phys. Lett. 31 125201 |
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Abstract This work addresses the challenges in the design, construction and use of laser heated emissive probes (LHEPs). The choice of a suitable material for the probe plays an important role. We describe the basic theory of a laser heated emissive probe, along with an analysis of the materials suitable for the probe. Furthermore, we present a comparison of the plasma potential measurements carried out with a conventional filament emissive probe and an LHEP.
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Published: 12 January 2015
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| PACS: |
52.70.-m
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(Plasma diagnostic techniques and instrumentation)
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79.20.Eb
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(Laser ablation)
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61.80.Ba
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(Ultraviolet, visible, and infrared radiation effects (including laser radiation))
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