Precise Characterization of the B (1/2) and C (3/2) States of XeF from a Deperturbation Analysis of the B → X Spectrum of 136XeF

Tellinghuisen, Joel

doi:10.1021/jp0156221

Cited by 7 publications

(6 citation statements)

References 44 publications

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“…Radicals were generated through pulsed laser photolysis of XeF 2 at 248 nm, leading to F atoms, which in the presence of CH 4 /O 2 and H 2 O will generate CH 3 O 2 and OH radicals. XeF 2 is an easy to handle, solid, stable compound, and its photochemistry has attracted much attention, − mostly as source of the initially formed XeF fragment. The total bond energy in XeF 2 is 265 kJ mol –1 , with 252 kJ mol –1 located in the first XeF bond .…”

Section: Methodsmentioning

confidence: 99%

Rate Constant of the Reaction between CH₃O₂ Radicals and OH Radicals Revisited

et al. 2016

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The reaction between CHO and OH radicals has been studied in a laser photolysis cell using the reaction of F atoms with CH and HO for the simultaneous generation of both radicals, with F atoms generated through 248 nm photolysis of XeF. An experimental setup combining cw-Cavity Ring Down Spectroscopy (cw-CRDS) and high repetition rate laser-induced fluorescence (LIF) to a laser photolysis cell has been used. The absolute concentration of CHO was measured by cw-CRDS, while the relative concentration of OH(v = 0) radicals was determined by LIF. To remove dubiety from the quantification of CHO by cw-CRDS in the near-infrared, its absorption cross section has been determined at 7489.16 cm using two different methods. A rate constant of k = (1.60 ± 0.4) × 10 cm s has been determined at 295 K, nearly a factor of 2 lower than an earlier determination from our group ((2.8 ± 1.4) × 10 cm s) using CHI photolysis as a precursor. Quenching of electronically excited I atoms (from CHI photolysis) in collision with OH(v = 0) is suspected to be responsible for a bias in the earlier, fast rate constant.

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Section: Methodsmentioning

confidence: 99%

Rate Constant of the Reaction between CH₃O₂ Radicals and OH Radicals Revisited

et al. 2016

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“…The figure displays the results of calculations with linear F A -Xe-F B geometries and a fixed F A -Xe bond length at its calculated minimum of 2.3 Å, which is in agreement with previous work. 14,15 These calculations show no barrier to association back to bound XeF 2 , but the FXe-F complex is known to be stable in Ar and Ne matrices. 18 Stabilisation of the B-state by approach of an F atom collinear to the diatomic axis, and a reduction in the gap between the B and X states are consistent with the red shifted B*-X absorption band.…”

Section: A Xef From Xefmentioning

confidence: 84%

“…Application of XeF in excimer lasers provided some original impetus for studying the ground and electronically excited XeF states. 10,[14][15][16][17] Fig. 1 shows the electronic states of XeF that are important in 266 nm photolysis of XeF 2 .…”

Section: Introductionmentioning

confidence: 99%

Dynamics of photodissociation of XeF₂ in organic solvents

Dunning

Preston

Orr-Ewing

et al. 2014

Phys. Chem. Chem. Phys.

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Transient electronic absorption measurements with 1 ps time resolution follow XeF2 photoproducts in acetonitrile and chlorinated solvents. Ultraviolet light near 266 nm promptly breaks one Xe-F bond, and probe light covering 320-700 nm monitors the products. Some of the cleaved F atoms remain in close proximity to an XeF fragment and perturb the electronic states of XeF. The time evolution of a perturbed spectral feature is used to monitor the FXe-F complex population, which decays in less than 5 ps. Decay can occur through geminate recombination, diffusive separation or reaction of the complex with the solvent.

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“…21 and transition dipole moments from Ref. 41. We consider a 540 nm ͑ 1 = 0.0843 a.u.͒ pump pulse and 565 nm ͑ 2 = 0.0806 a.u.͒ Stokes pulse.…”

Section: ͑A18͒mentioning

confidence: 99%

Time- and frequency-resolved coherent anti-Stokes Raman scattering spectroscopy with sub-25fs laser pulses

Lausten

Smirnova

Sussman

et al. 2008

The Journal of Chemical Physics

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions?Contact the NRC Publications Archive team at PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://doi.org/10.1063/1.2932101 Journal of Chemical Physics, 128Time-and frequency-resolved coherent anti-Stokes Raman scattering spectroscopy with sub-25 fs laser pulses In general, many different diagrams can contribute to the signal measured in broadband four-wave mixing experiments. Care must therefore be taken when designing an experiment to be sensitive to only the desired diagram by taking advantage of phase matching, pulse timing, sequence, and the wavelengths employed. We use sub-25 fs pulses to create and monitor vibrational wavepackets in gaseous iodine, bromine, and iodine bromide through time-and frequency-resolved femtosecond coherent anti-Stokes Raman scattering ͑CARS͒ spectroscopy. We experimentally illustrate this using iodine, where the broad bandwidths of our pulses, and Boltzmann population in the lower three vibrational levels conspire to make a single diagram dominant in one spectral region of the signal spectrum. In another spectral region, however, the signal is the sum of two almost equally contributing diagrams, making it difficult to directly extract information about the molecular dynamics. We derive simple analytical expressions for the time-and frequency-resolved CARS signal to study the interplay of different diagrams. Expressions are given for all five diagrams which can contribute to the CARS signal in our case.

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Precise Characterization of the B (¹/₂) and C (³/₂) States of XeF from a Deperturbation Analysis of the B → X Spectrum of ¹³⁶XeF

Cited by 7 publications

References 44 publications

Rate Constant of the Reaction between CH₃O₂ Radicals and OH Radicals Revisited

Rate Constant of the Reaction between CH₃O₂ Radicals and OH Radicals Revisited

Dynamics of photodissociation of XeF₂ in organic solvents

Time- and frequency-resolved coherent anti-Stokes Raman scattering spectroscopy with sub-25fs laser pulses

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Precise Characterization of the B (1/2) and C (3/2) States of XeF from a Deperturbation Analysis of the B → X Spectrum of 136XeF

Cited by 7 publications

References 44 publications

Rate Constant of the Reaction between CH3O2 Radicals and OH Radicals Revisited

Rate Constant of the Reaction between CH3O2 Radicals and OH Radicals Revisited

Dynamics of photodissociation of XeF2 in organic solvents

Time- and frequency-resolved coherent anti-Stokes Raman scattering spectroscopy with sub-25fs laser pulses

Contact Info

Product

Resources

About

Precise Characterization of the B (¹/₂) and C (³/₂) States of XeF from a Deperturbation Analysis of the B → X Spectrum of ¹³⁶XeF

Rate Constant of the Reaction between CH₃O₂ Radicals and OH Radicals Revisited

Rate Constant of the Reaction between CH₃O₂ Radicals and OH Radicals Revisited

Dynamics of photodissociation of XeF₂ in organic solvents