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
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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2014, Vol. 31 
