Development of simple designs of multitip probe diagnostic systems for RF plasma characterization

Naz, M.Y. and Shukrullah, S. and Ghaffar, A. and Rehman, N.U. (2014) Development of simple designs of multitip probe diagnostic systems for RF plasma characterization. The Scientific World Journal, 2014. ISSN 1537744X

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Abstract

Multitip probes are very useful diagnostics for analyzing and controlling the physical phenomena occurring in low temperature discharge plasmas. However, DC biased probes often fail to perform well in processing plasmas. The objective of the work was to deduce simple designs of DC biased multitip probes for parametric study of radio frequency plasmas. For this purpose, symmetric double probe, asymmetric double probe, and symmetric triple probe diagnostic systems and their driving circuits were designed and tested in an inductively coupled plasma (ICP) generated by a 13.56 MHz radio frequency (RF) source. Using I - V characteristics of these probes, electron temperature, electron number density, and ion saturation current was measured as a function of input power and filling gas pressure. An increasing trend was noticed in electron temperature and electron number density for increasing input RF power whilst a decreasing trend was evident in these parameters when measured against filling gas pressure. In addition, the electron energy probability function (EEPF) was also studied by using an asymmetric double probe. These studies confirmed the non-Maxwellian nature of the EEPF and the presence of two groups of the energetic electrons at low filling gas pressures. © 2014 M. Y. Naz et al.

Item Type: Article
Additional Information: cited By 8
Uncontrolled Keywords: article; density; electron; energy; mechanical probe; plasma; probability; radiofrequency identification; analysis; chemistry; computer aided design; conductometry; device failure analysis; devices; electrode; equipment design; plasma gas; radiofrequency radiation; transducer, plasma gas, Computer-Aided Design; Conductometry; Electrodes; Equipment Design; Equipment Failure Analysis; Plasma Gases; Radio Waves; Transducers
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 16:16
Last Modified: 09 Nov 2023 16:16
URI: https://khub.utp.edu.my/scholars/id/eprint/4359

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