A 3000 K laboratory emission spectrum of water |
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Authors: | Coheur Pierre-François Bernath Peter F Carleer Michel Colin Reginald Polyansky Oleg L Zobov Nikolai F Shirin Sergei V Barber Robert J Tennyson Jonathan |
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Institution: | Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles, 50 Av. F.D. Roosevelt, B-1050 Bruxelles, Belgium. |
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Abstract: | An emission spectrum of hot water with a temperature of about 3000 K is obtained using an oxy-acetylene torch. This spectrum contains a very large number of transitions. The spectrum, along with previous cooler laboratory emission spectra and an absorption spectrum recorded from a sunspot, is analyzed in the 500-2000 cm(-1) region. Use of a calculated variational linelist for water allows significant progress to be made on assigning transitions involving highly excited vibrational and rotational states. In particular emission from rotationally excited states up to J=42 and vibrational levels with up to eight quanta of bending motion are assigned. |
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