High resolution ionization-detected Raman gain spectroscopy of N2 and C6H6

Leuchs, M.; Crew, Marshall D.; Harrison, Jayne E; Hineman, Max F.; Nibler, Joseph W.

doi:10.1063/1.472325

Cited by 13 publications

(8 citation statements)

References 12 publications

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“…Such identification does not imply recommendations or endorsements by the National Institute of Standards and Technology, or the Pacific Northwest National Laboratory, or the National Science Foundation, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose. spectroscopy in that the overall effective resolution capability has been shown to be very good, 0.001 cm À1 [11]. The unique component of this system is a seeded, single frequency Nd:YAG laser (Continuum, custom laser) that is frequency doubled to deliver 45-50 ns pulses of 532 nm light at 20 Hz and 100 mJ/pulse.…”

Section: Methodsmentioning

confidence: 99%

Analysis of high-resolution infrared and CARS spectra of 34S18O3

Masiello

Vulpanovici

Barber

et al. 2004

Journal of Molecular Spectroscopy

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Section: Methodsmentioning

confidence: 99%

Analysis of high-resolution infrared and CARS spectra of 34S18O3

Masiello

Vulpanovici

Barber

et al. 2004

Journal of Molecular Spectroscopy

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“…The CARS apparatus at Oregon State University, described previously [9], was used to obtain the highresolution Raman spectrum. This system is unusual for Raman spectroscopy in that the overall effective instrumental resolution capability has been shown to be very good, 0.001 cm À1 .…”

Section: Methodsmentioning

confidence: 99%

Analysis of high-resolution infrared and CARS spectra of 32S18O3

Masiello

Vulpanovici

Barber

et al. 2004

Journal of Molecular Spectroscopy

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As part of a series of investigations of isotopic forms of sulfur trioxide, high-resolution infrared and coherent anti-Stokes Raman spectroscopies were used to study the fundamental modes and several hot bands of 32 S 18 O 3 . Upper levels of hot bands originating from the m 2 and m 4 bending mode states have been found to couple strongly to the upper levels of the IR-inactive m 1 symmetric stretch through indirect Coriolis interactions and Fermi resonances. Coriolis coupling effects are particularly noticeable in 32 S 18 O 3 due to the close proximity of the m 2 and m 4 fundamental vibrations, whose deperturbed wavenumber values are 486.48813(4) and 504.28477(4) cm À1 . The uncertainties in the last digits are shown in parentheses and are two standard deviations. From the infrared transitions, accurate rovibrational constants are deduced for all of the mixed states, leading to deperturbed values for m 1 , a B 1 , and a C 1 of 1004.68(2), 0.000713(2), and 0.000348(2) cm À1 , respectively. The B e value is found to be 0.310820(2) cm À1 , yielding an equilibrium bond length r e of 141.7333(4) pm that is, within experimental uncertainty, identical to the value of 141.7339(3) pm reported previously for 34 S 18 O 3 . With this work, precise and accurate spectroscopic constants have now been determined in a systematic and consistent manner for all the fundamental vibrational modes of the sulfur trioxide D

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“…In the present work, the ν 1 band of SO 3 has been examined at much higher resolution (0.001 cm −1 ) and low pressure, using coherent anti-Stokes Raman spectroscopy (CARS) (31). Surprisingly, this investigation has shown the presence of two intense Q-branch-like bands in the ν 1 region, with a separation of only 0.2 cm −1 .…”

Section: Introductionmentioning

confidence: 95%