Photographic plasma images and electron number density as well as electron temperature mappings of a plasma sustained with a modified argon microwave plasma torch (MPT) measured by spatially resolved Thomson scattering |
| |
| Institution: | 1. Department of Physics, University of Azad, Jammu & Kashmir, Muzaffarabad, Pakistan;2. University of Pelita Harapan, 1100 M.H. Thamrin Boulevard, Lippo Village, Tangerang 15811, Indonesia;3. Department of Computer Engineering, Bina Nusantara University, 9 K.H. Syahdan, Jakarta 14810, Indonesia;4. Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Darussalam, Banda Aceh 23111, Indonesia;5. Faculty of Mathematics and Natural Sciences, Diponegoro University, Tembalang, Semarang 50275, Indonesia;6. Faculty of Mathematics and Natural Sciences, Jakarta State University, 10 Rawamangun, Jakarta, Indonesia;7. Krida Wacana Christian University, Jakarta 11470, Indonesia;8. Faculty of Mathematics and Natural Sciences, Udayana University, Kampus Bukit Jimbaran, Denpasar 80361, Bali, Indonesia;9. Research Center of Maju Makmur Mandiri Foundation, 40/80 Srengseng Raya, Jakarta 11630, Indonesia;10. Fukui Science Education Academy, Takagi Chuou 2 choume, Fukui 910-0804, Japan;11. Physics of Magnetism and Photonics Group, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, 10 Ganesha, Bandung 40132, Indonesia;1. School of Physics and Optoelectronic Engineering, Xidian University, Xi''an, Shaanxi 710071, China;2. School of Electronic Engineering, Xidian University, Xi''an, Shaanxi 710071, China |
| |
| Abstract: | In this work the determination of electron number densities and electron temperatures for the case of a modified microwave plasma torch (MPT) operated at 100 W with argon by means of spatially resolved Thomson scattering measurements and photographic records of the MPT at different working conditions are reported. With an internal gas flow of 500 ml min?1 and an outer gas flow of 200 ml min?1 electron number densities and electron temperatures are in the range of 1020 m?3 to 1021 m?3 and of 16 000–18 000 K, respectively. When increasing the internal gas flow from 500 to 900 ml min?1 the plasma becomes longer and the maximum electron number density increases by a factor of 2. An increase of the outer gas flow from 200 to 700 ml min?1 leads to a lifting of the whole plasma from the burner edge with the maximum electron number density remaining unchanged. An increase of the power from 80 to 180 W was found to lead to higher electron number densities whereas the electron temperatures remain unchanged. The addition of 1.2 mg min?1 of water vapor to the internal gas flow leads to a decrease of the electron number density from 4.7×1020 m?3 to 2×1020 m?3 and to an increase of the electron temperature from 16 000 to 22 000 K. In order to document the influence of the internal gas flow rate, water introduction and introduction of easily ionized elements on the visible plasma shape digitally recorded photos of the plasma are presented. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
