The absorption spectrum of water vapor in the 2.2 μm transparency window: High sensitivity measurements and spectroscopic database; Journal of Quantitative Spectroscopy and Radiative Transfer; Vol. 189
| Parent link: | Journal of Quantitative Spectroscopy and Radiative Transfer Vol. 189.— 2017.— [P. 407–416] |
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| Institution som forfatter: | |
| Andre forfattere: | , , , , , , , , |
| Summary: | Title screen The weak absorption spectrum of water vapor in the important 2.2 μm transparency window is investigated with very high sensitivity. Overall, about 400 absorption lines were measured by Cavity Ring Down Spectroscopy (CRDS) and Optical-Feedback-Cavity Enhanced Laser Spectroscopy (OF-CEAS) in five spectral intervals: 4248.2-4257.3, 4298.4-4302.6, 4336.8.5-4367.5, 4422.4-4441.2 and 4514.6-4533.7 cm1 . The achieved sensitivity of the recordings (noise equivalent absorption, αmin, on the order of 2 1010 cm1 ) allowed detecting transitions with intensity values down to 1 1028 cm/ molecule, more than one order of magnitude better than previous studies by Fourier Transform spectroscopy. The rovibrational assignment was performed on the basis of variational calculations and of previously determined empirical energy values. Most of the newly assigned lines correspond to transitions of the ν1, ν3 and 3ν2 bands of H2 17O in natural isotopic abundance. Fourteen energy levels of H2 17O, H2 18O and HD18O are newly determined. An accurate and complete spectroscopic database is constructed for natural water in the 4190-4550 cm1 region (2.39-2.20 mm). The list includes about 4500 transitions with intensity greater than 1 1029 cm/molecule, for the six most abundant isotopologues in natural isotopic abundance. Line positions were obtained by difference of empirical energy values determined from literature data and complemented with the present CRDS results. The list is made mostly complete by including weak transitions not yet detected, with positions calculated from empirical levels and variational intensities. Режим доступа: по договору с организацией-держателем ресурса |
| Sprog: | engelsk |
| Udgivet: |
2017
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| Fag: | |
| Online adgang: | http://dx.doi.org/10.1016/j.jqsrt.2016.12.016 |
| Format: | Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653940 |
MARC
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| 200 | 1 | |a The absorption spectrum of water vapor in the 2.2 μm transparency window: High sensitivity measurements and spectroscopic database |f A. Campargue [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: p. 415-416 (62 tit.)] | ||
| 330 | |a The weak absorption spectrum of water vapor in the important 2.2 μm transparency window is investigated with very high sensitivity. Overall, about 400 absorption lines were measured by Cavity Ring Down Spectroscopy (CRDS) and Optical-Feedback-Cavity Enhanced Laser Spectroscopy (OF-CEAS) in five spectral intervals: 4248.2-4257.3, 4298.4-4302.6, 4336.8.5-4367.5, 4422.4-4441.2 and 4514.6-4533.7 cm1 . The achieved sensitivity of the recordings (noise equivalent absorption, αmin, on the order of 2 1010 cm1 ) allowed detecting transitions with intensity values down to 1 1028 cm/ molecule, more than one order of magnitude better than previous studies by Fourier Transform spectroscopy. The rovibrational assignment was performed on the basis of variational calculations and of previously determined empirical energy values. Most of the newly assigned lines correspond to transitions of the ν1, ν3 and 3ν2 bands of H2 17O in natural isotopic abundance. Fourteen energy levels of H2 17O, H2 18O and HD18O are newly determined. An accurate and complete spectroscopic database is constructed for natural water in the 4190-4550 cm1 region (2.39-2.20 mm). The list includes about 4500 transitions with intensity greater than 1 1029 cm/molecule, for the six most abundant isotopologues in natural isotopic abundance. Line positions were obtained by difference of empirical energy values determined from literature data and complemented with the present CRDS results. The list is made mostly complete by including weak transitions not yet detected, with positions calculated from empirical levels and variational intensities. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Quantitative Spectroscopy and Radiative Transfer | ||
| 463 | |t Vol. 189 |v [P. 407–416] |d 2017 | ||
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| 701 | 1 | |a Campargue |b A. |g Alain | |
| 701 | 1 | |a Mikhailenko |b S. N. |c physicist |c Associate Professor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1962- |g Semen Nikolaevich |3 (RuTPU)RU\TPU\pers\34035 | |
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