Publication Abstracts
Podobedov et al. 2008
Podobedov, V.B., D.F. Plusquellic, K.E. Siegrist, G.T. Fraser,
, and R.H. Tipping, 2008: New measurements of the water vapor continuum in the region from 0.3 to 2.7 THz. J. Quant. Spectrosc. Radiat. Transfer, 109, 458-467, doi:10.1016/j.jqsrt.2007.07.005.We present a spectroscopic study of the water vapor continuum absorption in the far-IR region from 10 to 90 /cm (0.3-2.7 THz). The experimental technique combines a temperature-stabilized multipass absorption cell, a polarizing (Martin-Puplett) interferometric spectrometer, and a liquid-He-cooled bolometer detector. The contributions to the absorbance resulting from the structureless H2O-H2O and H2O-N2 continua have been measured in the temperature range from 293 to 333 K with spectral resolution of 0.04-0.12 /cm. The resonant water vapor spectrum was modeled using the HITRAN04 database and a Van Vleck-Weisskopf lineshape function with a 100 /cm far-wing cut-off. Within experimental uncertainty, both the H2O-H2O and H2O-N2 continua demonstrate nearly quadratic dependencies of absorbance on frequency with, however, some deviation near the 2.5 THz window. The absorption coefficients of 3.83 and 0.185 (dB/km)/(kPa THz)2 were measured for self- and foreign-gas continuum, respectively. The corresponding temperature exponents were found to be 8.8 and 5.7. The theoretically predicted foreign continuum is presented and a reasonable agreement with experiment is obtained.
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BibTeX Citation
@article{po09100s, author={Podobedov, V. B. and Plusquellic, D. F. and Siegrist, K. E. and Fraser, G. T. and Ma, Q. and Tipping, R. H.}, title={New measurements of the water vapor continuum in the region from 0.3 to 2.7 THz}, year={2008}, journal={Journal of Quantitative Spectroscopy and Radiative Transfer}, volume={109}, pages={458--467}, doi={10.1016/j.jqsrt.2007.07.005}, }
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RIS Citation
TY - JOUR ID - po09100s AU - Podobedov, V. B. AU - Plusquellic, D. F. AU - Siegrist, K. E. AU - Fraser, G. T. AU - Ma, Q. AU - Tipping, R. H. PY - 2008 TI - New measurements of the water vapor continuum in the region from 0.3 to 2.7 THz JA - J. Quant. Spectrosc. Radiat. Transfer JO - Journal of Quantitative Spectroscopy and Radiative Transfer VL - 109 SP - 458 EP - 467 DO - 10.1016/j.jqsrt.2007.07.005 ER -
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