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Loss of plasma scaling with magnetic field, pressure and discharge current in a CUSP confined plasma

Published online by Cambridge University Press:  15 September 2001

A. Anukaliani  and
V. Selvarajan
A. Anukaliani
Affiliation:
Department of Physics, Bharathiar University, Coimbatore, 641046, India
V. Selvarajan*
Affiliation:
Department of Physics, Bharathiar University, Coimbatore, 641046, India
*
[email protected]
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Abstract

The confinement properties of a low beta argon discharge plasma in a spindle cusp magnetic field was investigated. Plasma was produced by ionisation collisions by the electrons which were produced by thermionic emission of electrons. The central problem involved with plasma confinement by a cusped magnetic field is the loss of particles along the flux lines. Electron and ion leak widths were studied in the ring and point cusps and measured over a range of magnetic field strengths (B), neutral pressures (P) and discharge currents (Id). It was found that the leak width was reduced with increase in Id and B. The ion leak widths were found to be larger than the electron leak widths. The normalised effect of magnetic field and pressure on ion and electron leak widths in cusps are reported, compared and discussed. The dependence of electron and ion leak widths on plasma densities were also studied. At very low pressures, high plasma densities and high magnetic field strengths, a quasineutrality condition was attained.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 15 , Issue 3 , September 2001 , pp. 199 - 206
Copyright
© EDP Sciences, 2001

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References

Kitsunezaki, A., Tanimoto, M., Sekiguchi, T., Phys. Fluids 17, 1895 (1974). CrossRef
Hershkowitz, N., Leung, K.N., Phys. Rev. Lett. 35, 277 (1975). CrossRef
Leung, K.N., Hershkowitz, N., Mackenzie, K.R., Phys. Fluids 19, 1045 (1976). CrossRef
Haines, M.G., Nucl. Fusion 17, 811 (1977). CrossRef
Hershkowitz, N., Smith, J.R., Kozima, H., Phys. Fluids 22, 122 (1979). CrossRef
Fujita, T., Ohnuma, T., Adachi, S., Plasma Phys. 23, 1019 (1981). CrossRef
Kozima, H. , Yamagiwa, K., Itoh, H., Sakurai, K., Plasma Phys. 25, 287 (1983). CrossRef
Kogoshi, S., Sato, K.N., Sekiguchi, T., J. Phys. D 11, 1057 (1978). CrossRef
Pechacek, R.E., Greig, J.R., Raleigh, M., Koopman, D.W., Desilva, A.W., Phys. Rev. Lett. 45, 256 (1980). CrossRef
Knorr, G., Willis, D., Z. Naturforsch. 37a, 780 (1982).
Knorr, G., Merlino, R.L., Plasma Phys. Controlled Fusion 26, 433 (1984). CrossRef
Bosch, R.A., Merlino, R.L., Phys. Fluids 29, 1998 (1986). CrossRef
Mukherjee, S., John, P.I., Surf. Coat. Technol. 93, 188 (1997). CrossRef
Morishita, T., Ogasawara, M., Hatayama, A., Rev. Sci. Instrum. 69, 968 (1998). CrossRef
N.A. Krall, A.W. Trivelpiece, Principles of Plasma Physics, Mc Graw Hill, New York, 1973.