High-pressure Microwave Discharges in a Compact Quartz Tube for an Electrodeless High Intensity Discharge Lamp

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概要

• 論文の詳細を見る

• A high-pressure microwave discharges in compact-size quartz discharge chambers were investigated in order to apply to high intensity discharge lamps. It could be ignited by low-power microwave using a launcher which is the annular slot antenna opened on the top plane of a coaxial waveguide. It was found that the discharge could be sustained by the microwave power of 10 ˜ 30 W even at the atmospheric pressure of argon gas and that the microwave leakage from the discharge chamber was much lower than the warning level when the slot was opened in the most appropriated position. When the additives such as NaI and ScI3 were mixed into argon in the discharge chamber, the light intensity emitted from the discharge significantly increased and the lamp efficiency estimated from the measured illumination amounted to 38.8lm/W. This value remained small because the ratio of discharge chamber volume to microwave power is much smaller than that of the conventional lamps.

• 社団法人 電気学会の論文
• 2005-06-01

著者

• NAKAMURA Tatsuya

  Department of Clinical Laboratory, Kansai Medical University Hirakata Hospital

• Kando Masashi

  Department Of Electric And Electronic Engineering Shizuoka University

• SHIDO Masaya

  Graduate School of Electronic Science and Technology, Shizuoka University

• SERITA Takuya

  Research and Development Department, Koito Manufacturing Co. Ltd.

• Nakamura Tatsuya

  Department Of Anatomy Kitasato University School Of Medicine

• Serita Takuya

  Research And Development Department Koito Manufacturing Co. Ltd.

• Shido Masaya

  Graduate School Of Electronic Science And Technology Shizuoka University

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