@article{scholars4992, publisher = {World Scientific Publishing Co. Pte Ltd}, journal = {Surface Review and Letters}, year = {2014}, title = {Testing of nickel-chrome alloy as a tip material for multi-tip langmuir probes}, doi = {10.1142/S0218625X14500565}, number = {4}, volume = {21}, note = {cited By 4}, abstract = {The electrostatic probes are considered to be the most powerful and experimentally simplest technique for plasma characterization. The objective of the work was to test the nickel-chrome alloy as probe tip material for characterization of RF discharge plasmas. In order to meet the objective, a triple Langmuir probe diagnostic system and associated driving circuit was designed and tested in inductively coupled plasma (ICP) generated by a 13.56 MHz radio frequency (RF) source. Using this probe diagnostic, the electron temperature, electron number density and ion saturation current were measured as a function of input RF power and filling gas pressure. An increasing trend was noticed in electron temperature and electron number density with input power whilst a decreasing trend was evident in these parameters for increasing nitrogen gas pressure. The overall variations in electron temperature and electron number density after repeated measurements were ranging from 5 to 12 and 3 to 13, respectively. {\^A}{\copyright} 2014 World Scientific Publishing Company.}, keywords = {Electrons; Inductively coupled plasma; Langmuir probes; Nickel; Plasma theory; Probes; Electric discharges; Electrons; Inductively coupled plasma; Langmuir probes; Nickel; Nitrogen; Plasma theory; Probes; Radio waves, Electron number densities; Inductively coupled plasma (ICP); Ion saturation current; Nitrogen gas pressure; Plasma characterization; Radio frequency plasma; Radio frequency source; Triple langmuir probes, Electron temperature; Electron temperature}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905818835&doi=10.1142\%2fS0218625X14500565&partnerID=40&md5=5df55c57769f570601499aebe4ba1144}, issn = {0218625X}, author = {Naz, M. Y. and Shukrullah, S. and Ghaffar, A. and Shakir, I. and Ullah, S. and Sagir, M.} }