Podobedov et al. 2008
Podobedov, V.B., D.F. Plusquellic, K.E. Siegrist, G.T. Fraser, Q. Ma, 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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Podobedov, V.B., Plusquellic, D.F., Siegrist, K.E., Fraser, G.T., Ma, Q., and Tipping, R.H.: 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, 2008.
Podobedov, V.B., D.F. Plusquellic, K.E. Siegrist, G.T. Fraser, Q. Ma, 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.
Podobedov, V.B., D.F. Plusquellic, K.E. Siegrist, G.T. Fraser, Q. Ma, 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.
Podobedov, V.B., Plusquellic, D.F., Siegrist, K.E., Fraser, G.T., Ma, Q., & Tipping, R.H. 2008, J. Quant. Spectrosc. Radiat. Transfer, 109, 458, doi:10.1016/j.jqsrt.2007.07.005.
Podobedov VB, Plusquellic DF, Siegrist KE, Fraser GT, Ma Q, Tipping RH. New measurements of the water vapor continuum in the region from 0.3 to 2.7 THz, J Quant Spectrosc Radiat Transfer 2008;109:458-467. doi:10.1016/j.jqsrt.2007.07.005.
V.B. Podobedov, D.F. Plusquellic, K.E. Siegrist, G.T. Fraser, Q. Ma, R.H. Tipping, J. Quant. Spectrosc. Radiat. Transfer 109, 458-467, doi:10.1016/j.jqsrt.2007.07.005 (2008).
