Spatial distribution of radiation intensity in high-frequency electrodeless discharge lamps

Nagulin, K. Yu.; Gil'mutdinov, A. Kh.; Badrutdinov, O. R.

doi:10.1007/bf02681414

Cited by 3 publications

(4 citation statements)

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“…A theoretical study of the electric field distribution in the cathode fall region of a spherical HCL was made by Mixon 387 and, in two papers, Gil'mutdinov established the spatial distribution of the radiation emitted by single, 388 double and combined 389 HF discharge lamps of the type used in AAS. A ''control'' lamp, containing only Xe, the fill gas, was used to compensate for radiation of this gas.…”

Section: Line Sources For Aas Varian Deutschlandmentioning

confidence: 99%

Atomic Spectrometry Update. Advances in atomic emission, absorption, and fluorescence spectrometry, and related techniques

Evans

Dawson²,

Fisher

et al. 2001

J. Anal. At. Spectrom.

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Section: Line Sources For Aas Varian Deutschlandmentioning

confidence: 99%

Atomic Spectrometry Update. Advances in atomic emission, absorption, and fluorescence spectrometry, and related techniques

Evans

Dawson²,

Fisher

et al. 2001

J. Anal. At. Spectrom.

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“…Spatial heterogeneity of emitting atoms can significantly influence emission properties of the light sources. The effect of radial cataphoresis in low pressure metal vapour (Hg, Na, Cs, As, Rb)-rare gas discharges is well known [1][2][3][4][5]. The radial cataphoresis originates as a result of the processes of ambipolar diffusion of charged particles to the wall and the diffusion of the neutrals returning to the centre.…”

Section: Introductionmentioning

confidence: 99%

“…The results of calculations have shown that the density of the excited Rb atoms at the centre of a lamp is close to zero. Experimental measurements of the radial intensity distribution were done and a qualitative explanation was given in [5] for the standard Cs-Xe and As-Xe HFELs. A strong nonuniform radial intensity distribution was found, measuring the Cs 852.1 nm line.…”

Section: Introductionmentioning

confidence: 99%

Tomographic diagnostics of high-frequency electrodeless lamps in argon–mercury mixtures

Denisova

Rēvalde

Skudra

et al. 2006

J. Phys. D: Appl. Phys.

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Tomographic reconstruction of spatial profiles of the mercury atom density in the excited state 7 3S1 in high-frequency electrodeless lamps (HFELs) has been performed. The measurements of the Hg 546.1 nm line emission intensity have been made for the HFELs in argon–mercury mixture depending on the operation regime with different cold spot temperatures in the range 31–98 °C. The maximum entropy-based algorithm was applied for the reconstruction of local emission coefficients from the integrated intensities. The emission coefficients are directly related to the local values of the mercury atom density in the excited state 7 3S1, the upper state of the 546.1 nm transition. Such an investigation has been performed first for the HFEL. We have found that the emitting mercury atoms in the state 7 3S1 are concentrated in a thin layer located close to the lamp wall. The radial profiles have demonstrated a strong depletion of the population density in the state 7 3S1 from the lamp centre at high generator currents and low mercury vapour density. The obtained results are analysed theoretically in the context of the radial cataphoresis phenomenon. We found a qualitative agreement between the reconstructed density profiles and theoretical model predictions.

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“…The decrease in the 546.1 nm Hg line intensity at the centre of the lamp was observed for two different values of the high frequency (HF) generator power. Experimental measurements of the radial intensity distribution were done and a qualitative explanation was given in [8] for the standard Cs-Xe and As-Xe HFEDLs. The lamps were operated by a standard PPBL-3M power supply.…”

Section: Introductionmentioning

confidence: 99%

Radial properties of high-frequency electrodeless lamps in argon–mercury mixtures

Denisova¹,

Rēvalde²,

Skudra³

2005

J. Phys. D: Appl. Phys.

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Radial emission properties of high-frequency electrodeless discharge lamps (HFEDLs) in argon–mercury mixtures are investigated both numerically and experimentally. The radial profile of the intensities of the mercury triplet lines 404.7, 435.8 and 546.1 nm are measured for two different values of the high frequency generator power. A model describing physical processes in an HFEDL, including the calculation of radial plasma parameters, is developed. Radial intensity dependences of the lines 404.7, 435.8 and 546.1 nm are calculated and are found to be in good agreement with the experimental measurements.

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Spatial distribution of radiation intensity in high-frequency electrodeless discharge lamps

Cited by 3 publications

References 1 publication

Atomic Spectrometry Update. Advances in atomic emission, absorption, and fluorescence spectrometry, and related techniques

Atomic Spectrometry Update. Advances in atomic emission, absorption, and fluorescence spectrometry, and related techniques

Tomographic diagnostics of high-frequency electrodeless lamps in argon–mercury mixtures

Radial properties of high-frequency electrodeless lamps in argon–mercury mixtures

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