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30 Sep 2002

Volume 81, Issue 14, pp. 2493-2662

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Self-sustained photoelectron discharge

P. A. Bokhan and D. E. Zakrevsky

Appl. Phys. Lett. 81, 2526 (2002); http://dx.doi.org/10.1063/1.1511289 (3 pages) | Cited 4 times

Online Publication Date: 23 September 2002

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This letter reports a discharge structure with a self-sustained photoelectron discharge. Specific to this discharge is its ability to generate electron beams with an energy of several keV and virtually 100% efficiency. A mechanism underlying the high efficiency of electron beam generation observed is proposed; the conditions required for pulse and continuous photoelectron discharge are determined. © 2002 American Institute of Physics.
Show PACS
52.80.-s Electric discharges
41.75.Fr Electron and positron beams

Power dissipation mode transition by a magnetic field

S. J. You, C. W. Chung, K. H. Bai, and H. Y. Chang

Appl. Phys. Lett. 81, 2529 (2002); http://dx.doi.org/10.1063/1.1506944 (3 pages) | Cited 12 times

Online Publication Date: 23 September 2002

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We measured electrical characteristics of transversely magnetized capacitively coupled plasma at low pressure (10 mTorr). From these measurements, we found that the power characteristics of the magnetized discharge were different from those of the unmagnetized discharge. As the magnetic field increases, a square dependence of power characteristic at high current changes to a linear dependence. This can be understood as a power dissipation mode transition by a magnetic field. A calculation from a simple sheath model agrees well with the experimental data. © 2002 American Institute of Physics.
Show PACS
52.80.-s Electric discharges
52.40.Kh Plasma sheaths
52.65.-y Plasma simulation
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