Rotational spectra of CF+ and CF+: accurate rest frequencies and spectroscopic parameters

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Volume 509 (January 2010)

A&A, 509 (2010) A1

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Table 1:

$J' \leftarrow J''$ (with J''=0-7) rotational transitions (MHz) and, for measured frequencies, corresponding observed-calculated (o-c) differences (kHz) for CF⁺ and ¹³CF⁺ together with the determined spectroscopic parameters. The latter are compared with the theoretical values as well as previous literature data.
$\begin{displaymath}\begin{tabular}{llr@{.}lr@{.}lcccllr@{.}lr@{.}l} \hline\hline... ...$H_e$ & (Hz) & 7&$000(27)\times10^{-2}$\\ \hline \end{tabular}\end{displaymath}$ ^a Calculated values on the basis of the spectroscopic parameters obtained from the fit (see second part of the table). In parentheses the estimated accuracy is given. The errors on the spectroscopic parameters employed are not the standard uncertainties reported in table, but those directly from SPFIT/SPCAT program: B₀ = 51294.1474(92) MHz and D₀ = 0.189955(236) MHz. ^b For computational details, see text. $\Delta B_{\rm vib}$ (CF⁺) = 278.4 MHz, $\Delta B_{\rm vib}$ (¹³CF⁺) = 258.9 MHz, $\Delta B_{\rm el}$ (CF⁺) = -5.5 MHz, $\Delta B_{\rm el}$ (¹³CF⁺) = -5.0 MHz. ^c Derived from the Dunham coefficients reported in Table 2 of Gruebele et al. (1986).

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