Measurement of number density of lead and thallium see-through hollow cathode discharges with a high resolution Fabry–Pérot spectrometer and by conventional atomic absorption

Taylor, Nicholas; Omenetto, N.; Smith, Benjamin W.; Winefordner, J. D.

doi:10.1007/s00340-007-2751-2

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…4). This discrepancy, which was also observed in the emission profile of the earlier literature [15], is attributed to the high drive current of the HCL. The SNR of the A1, A2, B1, and B2 components is high enough for laser frequency stabilization and direct frequency measurement using the HighFinesse wavelength meter.…”

Section: Resultsmentioning

confidence: 49%

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Frequency measurement of the 6P3/2→7S1/2transition of thallium

et al. 2013

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The saturated absorption spectrum of the 6P 3/2 → 7S 1/2 transition of 203 Tl and 205 Tl in a hollow cathode lamp has been observed with a frequency-doubled 1070 nm Nd : GdVO 4 laser. The third-derivative spectrum of the hyperfine components are obtained using the wavelength modulation spectroscopy and used to stabilize the laser frequency. The analysis of the error signal shows that the frequency stability reaches 30 kHz at 1 s averaging time. Such a frequency-stabilized light source at 535 nm can be used for laser cooling of thallium and for investigating the parity non-conservation effect in thallium. The absolute frequencies of hyperfine components are measured with an accuracy of 30 MHz using a precision wavelength meter. Including the pressure shift correction, the center of gravity of the transition frequency is determined to an accuracy of 22 MHz for both isotopes. Meanwhile, the isotope shift derived is in good agreement with earlier measurement.

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Section: Resultsmentioning

confidence: 49%

“…HCL is a metal-vapor discharge lamp specifically developed for atomic absorption spectroscopy and narrow band atomic line filter [15]. Exciting the HCL with a high voltage source, a discharge plasma is generated inside the cathode.…”

Section: Methodsmentioning

confidence: 99%

Frequency measurement of the 6P3/2→7S1/2transition of thallium

et al. 2013

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“…He found that deviations from the standard model of asymmetric charge transfer ionization could be explained by variations in the number density of the discharge gas and three-body recombination reactions. Taylor et al 251 investigated a see-through HC GD and used a novel method for for measurement of an atomic absorption profile using a quasicontinuum source created by the combination of two line sources and a high-resolution Fabry-Perot interferometer. Number densities of Pb and Th were calculated from absorption profiles by the peak absorption coefficient relationship, and by conventional AA Pb 3 P 1 metastable state and the Th 2 P1⁄ 2 , 0 ground state.…”

Section: Glow Discharges Several Papers Bymentioning

confidence: 99%