Cylindrical plasmas generated by an annular beam of ultraviolet light

Journal Article · Wed Jul 15 00:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4926529· OSTI ID:22490992

Thomas, D. M., E-mail: [e-mail] ^[1]; Allen, J. E., E-mail: [e-mail] ^[1]; University College, University of Oxford, Oxford OX1 4BH, United Kingdom and OCIAM, Mathematical Institute, University of Oxford, Oxford OX2 6GG ^[2]

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1. Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW (United Kingdom)
2. (United Kingdom)

We investigate a cylindrical plasma system with ionization, by an annular beam of ultraviolet light, taking place only in the cylinder's outer region. In the steady state, both the outer and inner regions contain a plasma, with that in the inner region being uniform and field-free. At the interface between the two regions, there is an infinitesimal jump in ion density, the magnitude approaching zero in the quasi-neutral (λ{sub D} → 0) limit. The system offers the possibility of producing a uniform stationary plasma in the laboratory, hitherto obtained only with thermally produced alkali plasmas.

• OSTI ID: 22490992
• Journal Information: Physics of Plasmas, Vol. 22, Issue 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BEAMS
CYLINDRICAL CONFIGURATION
ION DENSITY
PLASMA
STEADY-STATE CONDITIONS
ULTRAVIOLET RADIATION