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On the Measurement of Electron Temperature of a Pulsed Washer Gun Argon Plasma by Triple Langmuir Probe Diagnostic Technique

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Title On the Measurement of Electron Temperature of a Pulsed Washer Gun Argon Plasma by Triple Langmuir Probe Diagnostic Technique
 
Creator Sethy, B K
Paikaray, R
Das, P
Samantaray, S
Sasini, N C
Mohanty, B
Sahoo, G
Sanyasi, A K
Ghosh, J
 
Subject Electron temperature
Low pressure plasma
Pulsed plasma
Triple probe
Washer gun
 
Description 375-380
Pulsed argon plasma of the order of 140 μs duration is produced by a washer gun under low pressure conditions. The low
pressure plasmas have many industrial applications such as etching, coating for corrosion, diamond and diamond like carbon
coating, super hard nano composite coating, synthesis of novel nanostructure etc. Measurement of fundamental parameters like
electron temperature of such pulsed plasmas is always challenging and should be determined properly. Triple probe diagnostic
is the most advanced, convenient and inexpensive method for measurement of plasma temperature which does not require any
voltage, frequency sweeps, or switching like single or double probe diagnostic methods. In this work we have introduced a
triple Langmuir probe to measure the electron temperature of pulsed washer gun argon plasma. A triple probe of pure tungsten
material with appropriate circuit is designed and fabricated in our laboratory. The triple probe signal is recorded by a digital
storage oscilloscope at the distance of 0.05 m from the gun mouth. It is observed that the electron temperature remains constant
at ⁓ 1.2 eV within the small variation of base pressure ranging from 0.2 to 1.0 mbar. This method is applicable to both
stationary and transient plasma which can be used for various industrial as well as research purpose.
 
Date 2024-04-09T11:28:27Z
2024-04-09T11:28:27Z
2024-04
 
Type Article
 
Identifier 0022-4456 (Print); 0975-1084 (Online)
http://nopr.niscpr.res.in/handle/123456789/63731
https://doi.org/10.56042/jsir.v83i4.2407
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source JSIR Vol.83(4) [April 2024]