Abstract

The spectrum of the C₂ Phillips System (A ¹Π_u → X ¹∑_g⁺) was observed in the spectral region 3300–6500 cm⁻¹ by using a high-resolution Fourier-transform spectrometer and a hollow-cathode discharge source. Three new bands were observed, the (2–3), (1–3), and (2–4) bands belonging to the Δυ = −1 and Δυ = −2 sequences. In addition, new lines were observed in the (0–2) band. These lines, combined with previous high-resolution data, are used in a linear least-squares algorithm to calculate Dunham coefficients with a standard deviation of 0.018 cm⁻¹. These coefficients facilitate the accurate prediction of wave numbers for the vibrational levels with υ″ and υ″.between 0 and 4.

© 1988 Optical Society of America

Improved molecular parameters for the Ballik-Ramsay system of diatomic carbon (b³Σg⁻ → a³Πu)

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Fourier-transform spectra of the A²Σ⁺–X²Π Δv = 0 bands of OH and OD

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Doppler-free ultraviolet excitation spectra of CΠ1_u−XΣ1g+ in Na₂ by modulated population spectroscopy

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J. Opt. Soc. Am. B 6(11) 1975-1978 (1989)