Miniature UV lamp excited by subnanosecond voltage pulses
- Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)
Energy, time, and spectral characteristics of emission of the second positive system of N{sub 2} molecules in gaseous nitrogen, Ar - N{sub 2} mixture, and air are investigated. An FPG-10 generator with voltage pulse FWHM of 200 and 400 ps and matched-load amplitudes of 14 and 6 kV, respectively, is used to excite gases. It is shown that excitation can be performed in two regimes using this generator. In the first regime a diffuse discharge is formed at atmospheric pressure, which opens ways to design miniature nanosecond UV lamps. A diffuse discharge is formed due to the generation of runaway electrons, with the aid of electrodes having a small radius of curvature and voltage pulses with a sharp leading edge. In the second regime an elevated average radiation power is obtained under excitation by a barrier discharge. However, the operating pressure is lower in this case, and the sizes of the emitting region and the UV pulse width significantly increase. (laser applications and other topics in quantum electronics)
- OSTI ID:
- 21471346
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 40, Issue 6; Other Information: DOI: 10.1070/QE2010v040n06ABEH014336; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
AIR
AMPLITUDES
ARGON
ATMOSPHERIC PRESSURE
DESIGN
ELECTRIC POTENTIAL
ELECTRODES
EMISSION
EXCITATION
LIGHT BULBS
MOLECULES
NITROGEN
PULSES
RUNAWAY ELECTRONS
ULTRAVIOLET RADIATION
ELECTROMAGNETIC RADIATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY-LEVEL TRANSITIONS
FERMIONS
FLUIDS
GASES
LEPTONS
NONMETALS
RADIATIONS
RARE GASES