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22-27 October 2018
Mahatma Mandir Conference Centre
Asia/Kolkata timezone
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Effect of Cathode Geometry on Magnetically Coupled Hollow Cathode Plasma Source

23 Oct 2018, 14:00
4h 45m
Mahatma Mandir Conference Centre

Mahatma Mandir Conference Centre

Gandhinagar (nearest Airport: Ahmedabad), India
Poster P2 Posters

Speaker

Mr Montu Bhuva (Institute for Plasma Research, INDIA)

Description

A direct current (dc) plasma source consisting of hollow cathode geometry and a constricted anode is presented. The effect of a hollow cathode geometry on radial density distribution of a magnetized plasma column has been studied in a low-pressure (approximately 1.4Pa) argon discharge. The plasma column is characterized using Langmuir probe and the radial density distribution for two different 'inside' profiles of a hollow cathode is discussed. Probe measurement indicates that conical-profile hollow cathode produces a plasma column with centrally peaked plasma density whereas cylindrical-profile hollow cathode forms plasma column with off-centered density peak. Thus overall dynamics of perpendicular and oblique cathode sheaths behind the sustenance of magnetized plasma column has been discussed. **Keywords:-** constricted anode, conical hollow cathode, cylindrical hollow cathode, Langmuir probe, magnetized plasma column, radial density distribution, oblique cathode sheaths.
Country or International Organization India
Paper Number EX/P2-13

Primary author

Mr Montu Bhuva (Institute for Plasma Research, INDIA)

Co-authors

Dr Shantanu Kumar Karkari (Institute for Plasma Research, INDIA) Mr Sunil Kumar (Institute for Plasma Research, INDIA)

Presentation Materials

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Paper