Abstract
Electron cyclotron resonance (ECR) plasma breakdown is studied in a small linear cylindrical system with four different gases — hydrogen, helium, argon and nitrogen. Microwave power in the experimental system is delivered by a magnetron at 2.45 ± 0.02 GHz in TE10 mode and launched radially to have extra-ordinary (X) wave in plasma. The axial magnetic field required for ECR in the system is such that the fundamental ECR surface (B = 875.0 G) resides at the geometrical centre of the plasma system. ECR breakdown parameters such as plasma delay time and plasma decay time from plasma density measurements are carried out at the centre using a Langmuir probe. The operating parameters such as working gas pressure (1 × 10−5−1× 10−2 mbar) and input microwave power (160–800 W) are varied and the corresponding effect on the breakdown parameters is studied. The experimental results obtained are presented in this paper.
Similar content being viewed by others
References
Y-K M Peng, S K Borowski and T Kammash, Nucl. Fusion 18, 1489 (1978)
T Cho, S Kubo, M Ikeda, T Saito, Y Terumichi, Y Hamada and S Tanaka, Phys. Lett. A77, 318 (1980)
R M Gilgenbach et al, Nucl. Fusion 21, 319 (1981)
A G Kulchar, O C Eldridge, A C England, C E Bush, P H Edmonds, G G Kelley, C M Loring, Y-K M Peng, J B Wilgen and S K Borowski, Phys. Fluids 27, 1869 (1984)
K Ohkubo et al, Nucl. Fusion 21, 1320 (1981)
Katsumichi Hoshino et al, J. Phys. Soc. Jpn. 54, 2503 (1985)
B Lloyd and T Edlington, Plasma Phys. Control. Fusion 28, 909 (1986)
B Lloyd, G L Jackson, T S Taylor, E A Lazarus, T C Luce and R Prater, Nucl. Fusion 31, 2031 (1991)
R W Polman, A C A P van Lammeren, J Lok, F C Schuller, F M A Smits and RTP-Team, Proceedings of the 18th European Conference on Controlled Fusion and Plasma Physics, Berlin, 1991, edited by P Machmann and D C Robinson (EPS Conference Abstracts, 1991) vol. 15C, Part III, p. 317
R W Polman, J Lok, J H Rommers and RTP Team, Proceedings of the Europhysics Conference on RF Heating and Current Drive in Fusion Devices, Brussels, 1992, edited by C Gormezano, P U Lamalle, R R Weynants (EPS 1992) vol. 16E, p. 325
D R Whaley, T P Goodman, A Pochelon, R Behn, A Cardinali, B P Duval, B Joye and M Q Tran, Nucl. Fusion 32, 757 (1992)
P K Chattopadhyay, R Pal, N R Ray and P K Gupta, Nucl. Fusion 36, 1205 (1996)
D Wroblewski and J L Shohet, Phys. Fluids 29, 1979 (1986)
J N Talmadge and D T Anderson, Nucl. Fusion 28, 1879 (1988)
D J Holly, S C Prager, D A Shepard and J C Sprott, Nucl. Fusion 21, 1483 (1981)
Vipin K Yadav and D Bora, Pramana — J. Phys. 63, 563 (2004)
Vipin K Yadav, K Sathyanarayana, D Purohit and D Bora, Rev. Sci. Instrum. 78, 023503 (2007)
I Langmuir, Phys. Rev. 33, 954 (1929)
Noah Hershkowitz, O Auciello and D L Flamm, Plasma diagnostics: Discharge parameters and chemistry (Academic Press Inc., San Diego, USA, 1989) vol. 1, p. 113
A M Howatson, An introduction to gas discharges, second edition (Pergamon Press, Oxford, 1976) p. 8
A I Anisimov, N I Vinogradov and B P Poloskin, Sov. Phys. Tech. Phys. 20, 626 (1975)
Yuri P Raizer, Gas discharge physics (Springer-Verlag, Germany, 1987) ch. 2
Francis F Chen, Introduction to plasma physics and controlled fusion, second edition (Plenum Press, New York, 1984) p. 162
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yadav, V.K., Sathyanarayana, K. & Bora, D. Electron cyclotron resonance breakdown studies in a linear plasma system. Pramana - J Phys 70, 487–501 (2008). https://doi.org/10.1007/s12043-008-0064-6
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12043-008-0064-6