Infrared laser spectrum of the fundamental band of CO+ (<i>X</i> 2Σ+)

Davies, Paul B.; Rothwell, W

doi:10.1063/1.449715

Cited by 18 publications

(7 citation statements)

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“…In the present work, the wavenumber data of the 10 bands, the infrared data of the rovibronic spectra (10), and the microwave data of the v ϭ 0, 1, 2, 3, and 4 levels both for the X 2 ⌺ ϩ state (11,12), a total of 2513 transitions were used simultaneously in a nonlinear least-squares fit. The weights were calculated from the expression w ϭ 1/ 2 , where is the uncertainty for the spectral positions of the lines.…”

Section: Resultsmentioning

confidence: 99%

The Comet-Tail (A2Πi–X2Σ+) System of 12C16O+: A Reinvestigation

Haridass

Prasad

Reddy

2000

Journal of Molecular Spectroscopy

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Section: Resultsmentioning

confidence: 99%

The Comet-Tail (A2Πi–X2Σ+) System of 12C16O+: A Reinvestigation

Haridass

Prasad

Reddy

2000

Journal of Molecular Spectroscopy

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“…Many other transitions were observed with doublet splittings given by the formula above. Figure 6 shows the R (l) component of CO+ with the predicted triplet fine structure (Davies & Rothwell 1985). (The different lineshapes for CN and CO+ reflect the different modulation techniques used.…”

Section: Cn Co+ (X 2i +)mentioning

confidence: 99%

Infrared laser spectroscopy of cations

Davies

1988

Phil. Trans. R. Soc. Lond. A

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The high-resolution infrared diode laser absorption spectra of several cations have been recorded and analysed. Most of the spectra were detected with an AC discharge and the velocity-modulation technique, with frequencies up to 60 kHz. In addition to ions, this method can also detect transient neutral species by recording at twice the modulation frequency (concentration modulation). As an example, spectra of an infrared electronic transition in H 2 are described briefly. The diatomic cationic species discussed are CO+ (X 2 E + ) and SH + (X 3 E - ), which are compared with the isoelectronic neutral free radicals CN and PH respectively, also in their ground states. Polyatomic cations that have been studied include HCO+ and H 3 0 + . The bending mode of HCO+ (2) shows a distinctive Q-branch with many resolved components at Doppler-limited resolution and also some hot-band lines. The HCO + spectrum can be combined with microwave measurements in the ground vibrational level to yield predictions for (2 1 ) rotational transitions for astrophysical searches. The most recent spectra of the v 2 ‘umbrella’ mode of H 3 O + , the 2+ <- I - band, provide spectroscopic data on vibrational levels approximately 1000 cm -1 above the inversion potential maximum.

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“…The 6-0, 1-0, 2-1, 1-1, 0-1, and 2-3 bands were investigated for the first time since Rao published his work [6]. These authors [15] merged the constants and band origins obtained by them from band by band fits, the results of B-X [16,17] and B-A [18] systems and the microwave [19,20] and infrared [21] data. As a result, they received a unique set of molecular constants for the X, A, and B states.…”

Section: Introductionmentioning

confidence: 98%