Measurement of the continuum absorption coefficient of water vapor near 14400 cm−1 (0.694 μm)

Tikhomirov, A. B.; Ptashnik, I. V.; Tikhomirov, B. A.
July 2006
Optics & Spectroscopy;Jul2006, Vol. 101 Issue 1, p80
Academic Journal
The continuum absorption coefficient (CAC) of water vapor ( k cont) in the visible region is determined for the first time from the data of laboratory measurements. For this purpose, the absorption spectra of water vapor in the region 14395–14402 cm−1 are recorded with the aid of a high-sensitivity photoacoustic spectrometer with a frequency-tunable single-pulse ruby laser, and the absorption measured in this transparency microwindow is compared with that calculated based on the HITRAN 2004 data bank. In the spectral region under study, k cont = (0.53 ± 0.18) × 10−9 cm−1 mbar−1 at a total pressure of a water vapor-nitrogen mixture of 1000 mbar and a temperature of 295 K. This value of the CAC is roughly 23% higher than the CAC value in the IO-CKD model of the continuum.


Related Articles

  • Photoacoustic absorption spectrometer for highly transparent dielectrics with parts-per-million sensitivity. Waasem, Niklas; Fieberg, Stephan; Hauser, Janosch; Gomes, Gregory; Haertle, Daniel; Kühnemann, Frank; Buse, Karsten // Review of Scientific Instruments;Feb2013, Vol. 84 Issue 2, p023109 

    A sensitive photoacoustic absorption spectrometer for highly transparent solids has been built and tested. As the light source an optical parametrical oscillator pumped by a nanosecond pulse laser with 10 Hz repetition rate is employed, covering the complete wavelength range from 407 to 2600 nm....

  • Ultra-sensitive carbon monoxide detection by using EC-QCL based quartz-enhanced photoacoustic spectroscopy. Dong, L.; Lewicki, R.; Liu, K.; Buerki, P.; Weida, M.; Tittel, F. // Applied Physics B: Lasers & Optics;May2012, Vol. 107 Issue 2, p275 

    A quartz-enhanced photoacoustic spectroscopy (QEPAS) based sensor for carbon monoxide detection at ppbv levels was developed with a 4.65 μm external-cavity quantum cascade laser operating both in continuous wave (cw) and pulsed modes. A 23-fold enhancement of the measured CO signal amplitude...

  • Remote photoacoustic measurements in aqueous solutions using an optical fiber. Russo, R. E.; Rojas, D.; Robouch, P.; Silva, R. J. // Review of Scientific Instruments;Dec1990, Vol. 61 Issue 12, p3729 

    A photoacoustic spectrometer was developed for remote optical absorption measurements in aqueous solutions using an 85-m optical fiber to deliver pulsed tunable dye laser radiation to a sample cuvette located in a glove box. The spectrometer was tested using aqueous solutions of praseodymium...

  • Time-domain photoacoustic measurements of absolute optical absorption coefficient using three-... Egerev, S.V.; Fokin, A.V.; Pashin, A.E. // Review of Scientific Instruments;Aug1996, Vol. 67 Issue 8, p2691 

    Presents a pulsed photoacoustic spectroscopy (PAS) technique for immediate measuring absolute optical absorption coefficient. Use of amplitude-time characteristics of photoacoustic (PA) signal generated in air surrounding the sample under investigation as basis of the technique; Derivation of...

  • Kinetics of photodarkening in a-As2Se3 thin films. Sati, Dinesh C.; Kumar, R.; Mehra, R. M.; Jain, H.; Ganjoo, Ashtosh // Journal of Applied Physics;Jun2009, Vol. 105 Issue 12, p123105-1 

    We report kinetics of photodarkening of a-As2Se3 films in terms of changes in absorption coefficient and optical band gap. These are estimated by in situ measurements of transmission spectra at intervals of 10 ms under laser illumination. The absorption coefficient increase with increasing time...

  • Temperature behavior of the fundamental optical absorption band in quasi-two-dimensional crystalline MnPS3. Piryatinskaya, V. G.; Kachur, I. S.; Slavin, V. V.; Yeremenko, A. V.; Vysochanskii, Yu. M. // Low Temperature Physics;Sep2012, Vol. 38 Issue 9, p870 

    Optical absorption spectra of the layered semiconductor MnPS3 are measured in the temperature range 12-160 K, which covers the magnetic ordering temperature. It is shown that the interband optical absorption coefficient is well described by a model for direct allowed transitions in...

  • Total absorption and photoionization cross sections of water vapor between 100 and 1000 Ã…. Haddad, G. N.; Samson, James A. R. // Journal of Chemical Physics;6/15/1986, Vol. 84 Issue 12, p6623 

    Total absorption and photoionization cross sections of water vapor have been measured between 100 and 1000 Å with an accuracy of ±3%. Recent calculations are shown to be in reasonable agreement with the present data.

  • Ultraviolet radiation and bio-optics in Crater Lake, Oregon. Hargreaves, B. R.; Girdner, S. F.; Buktenica, M. W.; Collier, R. W.; Urbach, E.; Larson, G. L. // Hydrobiologia;Dec2006, Vol. 574 Issue 1, p107 

    Crater Lake, Oregon, is a mid-latitude caldera lake famous for its depth (594 m) and blue color. Recent underwater spectral measurements of solar radiation (300–800 nm) support earlier observations of unusual transparency and extend these to UV-B wavelengths. New data suggest that...

  • Specific absorption coefficient and the phytoplankton package effect in Lake Taihu, China. Le, Chengfeng; Li, Yunmei; Zha, Yong; Sun, Deyong // Hydrobiologia;Jan2009, Vol. 619 Issue 1, p27 

    In order to investigate variations of absorption and total chlorophyll- a (TChl- a)-specific absorption coefficient of phytoplankton in Lake Taihu, 57 water samples obtained from Lake Taihu during November 8–22, 2007 were used in this study. Package effect and accessory pigments’...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics