Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5429659 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2011 | 7 Pages |
As is well known, individual molecular spectroscopic transition can be characterized by a single, fixed parameter that describes the transition's temperature sensitivity. This parameter is commonly known as the lower-state energy. In practical spectra, spectral lineshapes cause the effective lower-state energy to vary continuously as a function of frequency, and blending of adjacent features causes the effective lower-state energy to vary with temperature as well. Accordingly, a frequency-dependent lower-state energy can be defined. This lower-state energy is easily computed from measured or simulated spectra and is valuable for detailed assessment of the temperature sensitivity of practical spectra.
Research highlights⺠A new frequency-dependent lower-state energy EνⳠis defined. ⺠EνⳠis easily calculated from measured or simulated absorption spectra. ⺠EνⳠis valuable for detailed understanding of the temperature sensitivity of practical spectra.