Electron beam pulses produced by helicon-wave excitation
- Plasma Research Laboratory, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory, 0200 (Australia)
- Laboratoire de Spectrometrie Physique (URA CNRS 08), Universite Joseph Fourier Grenoble 1, BP 87, 38402 Saint-Martin-d`Heres Cedex (France)
The 443 nm Ar{sup +} line emission intensity in a cylindrical argon magnetoplasma excited by a 13.56 MHz helicon antenna is found to be strongly modulated at the excitation frequency. The peak in optical emission propagates in the axial direction at a velocity corresponding to that of helicon waves launched by the antenna. The spatiotemporal modulation is consistent with pulses of electrons produced by acceleration under the antenna and subsequent entrainment of these electrons over half of a trapping period in the axial electric field of the helicon wave. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
- OSTI ID:
- 165280
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 2; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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