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Ionization waves in plasma columns detected by microwaves

Published online by Cambridge University Press:  13 March 2009

G. Cicconi ,
C. Rosatelli  and
V. Molinari
G. Cicconi
Affiliation:
Electrical Engineering Department, University of Genova, Italy
C. Rosatelli
Affiliation:
Electrical Engineering Department, University of Genova, Italy
V. Molinari
Affiliation:
Nuclear Engineering Department, University of Bologna, Italy
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Abstract

Ionization wave frequency spectra and their spatial distribution along argon and neon plasma positive columns are detected by microwaves in the 8–18 GHz frequency band. The plasmas are created at medium pressure by d.c. discharges in narrow tubes. Detection takes place in a rectangular waveguide on the microwave fields reflected and transmitted by plasma columns which are placed transversely across the waveguide in different positions and at several values of the discharge current. The frequency of the microwaves is adjusted for a parametric resonance condition with respect to Langmuir's electron frequency. The properties and dispersion relations of these waves are derived from a linear theory developed by K. W. Gentle, in which, for discharge operation below the Pupp limit, metastables are also included in the ionization and species conservation equations. An estimate of the total collision frequency is derived from a simplified two-fluid model valid essentially near the Pupp equilibrium limit.

Type
Research Article
Information
Journal of Plasma Physics , Volume 20 , Issue 1 , August 1978 , pp. 107 - 123
Copyright
Copyright © Cambridge University Press 1978

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References

REFERENCES

Brown, S. C. 1959 Basic Data of Plasma Physics. MIT Press.Google Scholar
Cicconi, G., Molinari, V. & Rosatelli, C. 1973 Jap. J. Appl. Phys. 12, 721.CrossRefGoogle Scholar
Cicconi, G., Molinari, V. ' Rosatelli, C. 1974 Third International Conference on Gas Discharges. lEE Publ. No. 118, 247.Google Scholar
Cicconi, G & Rosatelli, C. 1976 J. Appl. Phys. 47, 922.CrossRefGoogle Scholar
Delcroix, J. L. 1966 Physique des Plasmas, vol. 2. Dunod.Google Scholar
Garscadden, A., Bletzinger, P. & Simonen, T. C. 1969 Phys. Fluids, 12, 1833.CrossRefGoogle Scholar
Gentle, K. W. 1966a Phys. Fluids, 9, 2203.CrossRefGoogle Scholar
Gentle, K. W. 1966b Phys. Fluids, 9, 2212.CrossRefGoogle Scholar
Grabec, I. 1973 Proceedings of the XIth International Conference on Ionization Phenomenon in Gases (Prague), p. 309.Google Scholar
Ohe, K. & Takeda, S. 1972 Jap. J. Appl. Phys. 11, 1173.CrossRefGoogle Scholar
Oleson, N. L. & Cooper, A. W. 1968 Advances in Electronics and Electron Physics, vol. 24, pp. 155–278. Academic.Google Scholar
Paik, S. F., Shapiro, J. N. & Gilbert, K. D. 1964 J. Appl. Phys. 35, 2573.CrossRefGoogle Scholar
Pekàrek, L. 1954 Ozech. J. Phys. 4, 221.Google Scholar
Pekàrek, L. 1968 Usp. Fiz. Nauk. 94, 463.CrossRefGoogle Scholar
Pekàrek, L. & Kraàsa, J 1974 Invited Lecture to VIIth Yugoslav Symposium and Summer School on Physics of Ionized Gases. Rovinij.Google Scholar
Perkin, R. M. 1976 Ph.D. Thesis. Physics Department of Royal Holloway College, University of London.Google Scholar
Shkarofsky, I. P., Johnston, T. W. & Bachynski, M. P. 1966 The Particle Kinetics of Plasmas. Addison-Wesley.Google Scholar
Silin, V. P. 1965 Soviet Phys. JETP, 21, 1127.Google Scholar
Sodomsky, K. P. 1963 J. Appl. Phys. 34, 1860.CrossRefGoogle Scholar
Swain, D. B. & Brown, S. C. 1971 Phys. Fluids, 35, 2573.Google Scholar
Von Engel, A. 1955 Ionized Gases. Oxford University Press.Google Scholar