- Conference date: 3-7 June 2002
- Location: Berkeley, California (USA)
High‐resolution measurements of the Π ← Π Q‐branch of pure N2O near 1160 cm−1 were made using a difference‐frequency spectrometer with resolution of 5 × 10−5 cm−1 and a signal‐to‐noise ratio of 2000:1. Lines Q18F through Q12E have been recorded in a single scan, at room temperature and at pressures ranging from 1 to 130 torr. The spectra are analyzed up to 23 torr on a line‐by‐line basis using a hard collision profile including Dicke narrowing and line mixing. Since the separation of the central lines of this double‐sided Q‐branch is of the same order of magnitude with the collisional broadening, line mixing is considered in the analysis even at 1 torr and its dependence with pressure is studied.
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