A new emissive-probe method for electron temperature measurement in radio-frequency plasmas
- Department of Information Telecommunication and Electronics, Tokai University, Kita-kaname 1117, Hiratsuka 259-1292 (Japan)
A new method to measure electron temperature by an emissive probe has been proposed. The method is based on measurement of the functional relationship between the floating potential and the heating voltage of emissive probe. From the measured data of the floating potential change as a function of the heating voltage, the electron temperature could be determined by comparing with the theoretical curve obtained under the assumption of Maxwellian distribution. The overall characteristic of the floating potential change could be explained as a function of the heating voltage. The electron temperatures obtained by the present method were consistent with those measured by the rf-compensated Langmuir probe within the error. These experimental verifications were made in the electron density range of 2.6x10{sup 11}-2.8x10{sup 12} cm{sup -3}. It was stressed that the present method is advantageous in that the probe is operated in a floating condition, hence applicable to plasmas produced in an insulated container.
- OSTI ID:
- 21024680
- Journal Information:
- Review of Scientific Instruments, Vol. 78, Issue 12; Other Information: DOI: 10.1063/1.2821200; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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