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Acceleration of re-ignition of high pressure mercury discharge lamps using photo-pre-ionization

  • Masafumi Jinno
  • Hisayohsi Kurokawa
  • Masaharu Aono
Plasma Technology

Abstract

High Intensity Discharge (HID) lamps are difficult to re-ignite rapidly because of the high pressure of metal vapor at high temperatures. We have succeeded in reducing the re-ignition time of high-pressure mercury lamps by using a pre-ionization step where an excess of electrons are generated by UV laser irradiation into the lamp. The effect of changing the laser focal point of the UV laser in the lamp and the position of an auxiliary electrode were also investigated. The time interval for re-ignition was reduced from 230s to 100s by laser irradiation near to the cathode. The results clearly showed that the effect of accelerating the re-ignition time by the pre-ionization step was determined by the behavior of excess electrons generated during the UV laser irradiation.

Keywords

Auxiliary Electrode Cathode Side Anode Side Laser Injection XeCl Laser 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. [1]
    M. Jinno, M. Aono and M. Kubo: J. Illum. Engng. Inst. Jpn.81 (1997) 457 (in Japanese)Google Scholar
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    R. Itatani, M. Kubo, M. Jinno et al.: inProc. 8th International Symposium on High Voltage Engineering, Yokohama 1993, 1993, Vol. 3, p. 301.Google Scholar
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    M. Jinno, M. Kubo and R Itatani: Trans. I.E.E. Jpn.115A (1995) 595 (in Japanese).Google Scholar
  4. [4]
    S.C. Brown: inBasic Data of Plasma Physics, MIT Press, Boston, 1967, p. 125.Google Scholar

Copyright information

© Springer 2000

Authors and Affiliations

  • Masafumi Jinno
    • 1
  • Hisayohsi Kurokawa
    • 1
  • Masaharu Aono
    • 1
  1. 1.Dept. of Electrical and Electronic EngineeringEhime UniversityEhimeJapan

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