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Fourier Transform Spectroscopy of Chemiluminescence from the SrO A1Σ+–X1Σ+ Transition

✍ Scribed by Hongzhi Li; Randall Skelton; Cristian Focsa; Bernard Pinchemel; Peter F. Bernath

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
125 KB
Volume
203
Category
Article
ISSN
0022-2852

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✦ Synopsis

The A 1 ⌺ ϩ -X 1 ⌺ ϩ chemiluminescence spectrum of SrO was observed using a Fourier transform spectrometer. SrO was produced in a Broida-type oven from the Sr ϩ N 2 O reaction. A total of 75 bands from 88 SrO, 87 SrO, and 86 SrO were measured in the range of 7600 -13 600 cm Ϫ1 at a resolution of 0.04 cm Ϫ1 . The vibrational levels of the ground state were observed up to v Љ ϭ 12 and over 10 000 rovibrational lines with J as high as 153 were analyzed at a precision of about 0.005 cm Ϫ1 . Significantly improved spectral constants for the ground state were obtained by representing the perturbed excited state by term values and by adding the known microwave data and infrared data to our fit. Strong perturbations were observed in the upper A state. The vibrational levels of the A 1 ⌺ ϩ state were measured up to vЈ ϭ 8 and some new perturbations are reported.

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