Properties of Longitudinal &amp; Transverse Discharge in a Tubular Fluorescent Lamp

Chung, Jae-Yoon; Kim, J.H.; Jeong, Jong‐Mun; Jin, Dongjun; Kim, H.C.; Bong, Jae-Hwan; Hwang, Ha-Chung; Lee, Myeong Soo; Koo, Je-Huan; Cho, G.S.

doi:10.5757/jkvs.2008.17.4.322

Journal of the Korean Vacuum Society

2008

DOI: 10.5757/jkvs.2008.17.4.322

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Properties of Longitudinal & Transverse Discharge in a Tubular Fluorescent Lamp

Jae-Yoon Chung¹,

J.H. Kim²,

Jong‐Mun Jeong³

et al.

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Cited by 3 publications

References 5 publications

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Longitudinal and transverse discharges with mercury-rare and xenon gases

Kim¹,

Jeong²,

Jin³

et al. 2011

J. Phys. D: Appl. Phys.

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The properties of longitudinal and transverse discharges are investigated with the use of external electrode tubular lamps, with respect to the characteristics of current and voltage, luminance and spectral radiation. With the mercury-rare gases, a high luminance of over 10 000 cd m−2 is readily obtained in the longitudinal discharge with a long positive column where the spectral radiations from Hg are dominant. However, the luminance is extremely low, a few hundred cd m−2, in the transverse discharge with a short gap where all kinds of atom species are ionized and the intensity of the spectral lines from Ne and Ar is rather high. With pure Xe and a mixture of Xe, the transverse discharge is superior to the longitudinal discharge in that the breakdown voltage is low and the luminance for a high pressure above 200 Torr is relatively high.

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Longitudinal and transverse discharges with mercury-rare and xenon gases

Kim¹,

Jeong²,

Jin³

et al. 2011

J. Phys. D: Appl. Phys.

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Exact Solutions of Plasma Diffusion in a Fine Tube Positive Column Discharge

Jin¹,

Jeong²,

kim³

et al. 2010

Journal of the Korean Vacuum Society

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Observation of Light-Propagation along the Tube of Cold Cathode Fluorescent Lamp

Cho¹,

Jin²,

Kim³

et al. 2011

Journal of the Korean Vacuum Society

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The light propagation along a long positive column has been observed in a cold cathode fluorescent lamp. The optical signals are observed with the DC and AC voltage power during lamp operation. The light propagating is observed in the operation with the DC-rippled voltage as well as the AC-voltage. The optical signals propagate from the high voltage side to the ground. These signals show two kinds of features according to the before and after Townsend breakdown. At the dark current before Townsend breakdown, the optical intensity is damped and the propagation velocity is 10 4 ∼10 5 m/s. At the high current of normal glow after Townsend breakdown, the propagation velocity is 10 5 ∼10 6 m/s without damping.

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Properties of Longitudinal & Transverse Discharge in a Tubular Fluorescent Lamp

Cited by 3 publications

References 5 publications

Longitudinal and transverse discharges with mercury-rare and xenon gases

Longitudinal and transverse discharges with mercury-rare and xenon gases

Exact Solutions of Plasma Diffusion in a Fine Tube Positive Column Discharge

Observation of Light-Propagation along the Tube of Cold Cathode Fluorescent Lamp

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