The Ångström (B1Σ+-A1Π) band system of 13C18O

Prasad, C. V. V.; Bhale, G. L.; Reddy, S. Paddi

doi:10.1016/0022-2852(84)90252-2

Cited by 15 publications

(20 citation statements)

References 7 publications

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“…In order to illustrate the identification of the rare isotopomer lines, the wavelength region of the LIF spectrum containing the 12 …”

Section: Typical Spectramentioning

confidence: 99%

“…A gas mixture containing a large fraction of atomic carrier gas (typically argon or neon at about 99.95% of the mixture) therefore results in the lowest sample temperature, producing a spectrum with stronger signals for the J = 0 and J = 1 lines of the rare isotopomers and less interference of the neighbouring higher-J lines of 12 …”

Section: Choice Of Co Fraction In Supersonic Expansionmentioning

confidence: 99%

“…The wavelength uncertainty calculated from this data is 0.7 pm. Table 1 Experimentally measured wavelengths for the e 3 R À (v 0 = 1) À X 1 R + (v 00 = 0) band of 12 3.3.3. a 03 R + (v 0 = 14) À X 1 R + (v 00 = 0) This band was recorded among the 12 C 16 O lines of the A 1 P À X 1 R + (v 0 = 4, v 00 = 0) band and is shown in detail in Fig. 12.…”

Section: Forbidden Transitions Of 12 C 16 Omentioning

confidence: 99%

“…The present paper describes the experimental conditions and methods that facilitated the investigation of the A 1 P À X 1 R + (v 0 , v 00 ) system of 12 C 16 O, 13 C 16 O, 12 C 17 O and 12 C 18 O simultaneously in natural abundance. The challenge in this work is to detect weak lines and improve their signal-to-noise ratio among strong neighbouring 12 C 16 O lines.…”

Section: Introductionmentioning

confidence: 99%

“…The challenge in this work is to detect weak lines and improve their signal-to-noise ratio among strong neighbouring 12 C 16 O lines. The specific conditions that facilitated this sensitivity are presented here for the first time and may be used in similar experiments to obtain high sensitivity for low-abundance isotopomers.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Investigation of four carbon monoxide isotopomers in natural abundance by laser-induced fluorescence in a supersonic jet

Plessis

Rohwer

Steenkamp

2007

Journal of Molecular Spectroscopy

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The four carbon monoxide (CO) isotopomers 12 C 16 O, 13 C 16 O, 12 C 18 O and 12 C 17 O have been detected simultaneously in a CO gas sample of natural isotopic abundance by measuring rovibronic excitation spectra of six vibronic bands in the Fourth Positive System. The CO sample was flow cooled by adiabatic expansion in a pulsed supersonic jet. The rovibronic excitation spectra were obtained using a novel pulsed laser source (pulse duration $25 ns, spectral bandwidth $5 GHz) continuously tunable in the 139-155 nm vacuum ultraviolet wavelength region for excitation and recording the total fluorescence. In the present paper we report on the spectroscopic results obtained, including transition wavelengths of three forbidden rovibronic bands (e 3 R À À X 1 R + (1, 0), d 3 D À X 1 R + (5, 0), a 03 R + À X 1 R + (14, 0)) of 12 C 16 O and band origins of six rovibronic bands (A 1 P(v 0 = 0-5) À X 1 R + (v 00 = 0)) of the rare isotopomer 12 C 17 O, and on the experimental conditions facilitating the high sensitivity of the measurements. The exceptional sensitivity demonstrated by the results has been achieved by fine tuning experimental conditions including the conditions in the supersonic expansion, the jet pulse duration and the laser pulse timing.

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“…In order to illustrate the identification of the rare isotopomer lines, the wavelength region of the LIF spectrum containing the 12 …”

Section: Typical Spectramentioning

confidence: 99%

Section: Choice Of Co Fraction In Supersonic Expansionmentioning

confidence: 99%

Section: Forbidden Transitions Of 12 C 16 Omentioning

confidence: 99%