Tunable VUV radiation generated by two-photon resonant frequency mixing in xenon

Hilbig, R.; Wallenstein, R.

doi:10.1109/jqe.1983.1071833

Cited by 104 publications

(33 citation statements)

References 25 publications

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“…However, if the actual relaxation rate constant is 10 3 -10 5 times smaller than the upper value, vibrationally excited ClO radicals could survive in the stratospheric conditions. Furthermore, if the rates of reactions involving vibrationally excited ClO such as (9) and (10) are fast, the reactions of vibrationally excited ClO radicals may be important in the atmosphere.…”

Section: Resultsmentioning

confidence: 99%

Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O₃→ ClO + O₂

et al. 1996

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The nascent vibrational distribution of ClO(X 2 Π) radicals produced in the ozone destruction reaction Cl + O 3 f ClO + O 2 has been measured, using vacuum-ultraviolet laser-induced fluorescence of the ClO(C 2 Σ --X 2 Π) transition. The nascent vibrational distribution of the ClO radicals is shown to be strongly inverted, with the relative ratio (V)0):(V)1):(V)2):(V)3):(V)4):(V)5) ) 0.8:1:1.3:2.4:2.9:2.7. The slope of the surprisal plots for the vibrational distribution of the product ClO is found to be (-8 ( 2). Vibrational relaxation processes for the ClO radicals in the X 2 Σ state by collisions are also studied. The upper limit values of the vibrational relaxation rate constants for ClO (V)1f0) by collisions with N 2 and Ar molecules are estimated to be both 5 × 10 -14 cm 3 molecule -1 s -1 .

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Section: Resultsmentioning

confidence: 99%

Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O₃→ ClO + O₂

et al. 1996

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“…Pulses of VUV laser radiation were generated using two photon resonant four-wave mixing in xenon gas 22 and the implementation of this method in the CRESU apparatus is described in some detail elsewhere. 21 Briefly, dye laser radiation was tuned to 255.94 nm in order to excite Xe in a twophoton transition to the 5p 5 6 p͓2…”

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confidence: 99%

Rotational energy transfer in collisions between CO(X 1Σ+, v=2, J=0, 1, 4, and 6) and He at temperatures from 294 to 15 K

Carty

Goddard

Sims

et al. 2004

The Journal of Chemical Physics

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Infrared-vacuum ultraviolet double resonance experiments have been implemented in the ultracold environment provided by a Cinétique de Réaction en Ecoulement Supersonique Uniforme apparatus. With this technique rate coefficients of two kinds have been measured for rotational energy transfer in collisions between CO and He: (a) those for total removal from the selected rotational states J=0, 1, 4, and 6 in the vibronic state X 1Σ+, v=2, and (b) those for transfer between selected initial and specific final states. Using different Laval nozzles, results have been obtained at several different temperatures: 294, 149, 63, 27, and 15 K. The thermally averaged cross sections for total removal by collisions with He show only slight variations both with initial rotational state and with temperature. The variation of state-to-state rate coefficients with ΔJ show several general features: (i) a decrease with increasing ΔJ; (ii) a propensity to favor odd ΔJ over even ΔJ; and (iii) at lower temperatures, the distribution of rate coefficients against ΔJ becomes narrower, and decreases in J are increasingly favored over increases in J, a preference which is most strongly seen for higher initial values of J. The results are shown to be in remarkably good agreement with those obtained in ab initio scattering calculations by Dalgarno and co-workers [Astrophys. J. 571, 1015 (2002)].

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“…Both of the tunable VUV beams are generated by resonant four-wave mixing (RFWM) and produce VUV light at sum-frequency 2o 1 + o 2 using Kr gas as the nonlinear medium. 14,15 The o 1 represents the two-photon resonant frequency of Kr at 212.556 nm, which coincides with the Kr two-photon transition 4s 2 4p 5 ( 2 P o 3/2 )5p 2 [1/2] 0 ' 4s 2 4p 6 1 S 0 . The o 2 represents the frequency of a tunable dye laser.…”

Section: Methodsmentioning

confidence: 94%

Photodissociation of CO₂between 13.540 eV and 13.678 eV

Song

Gao

Chang

et al. 2014

Phys. Chem. Chem. Phys.

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TitlePhotodissociation of CO2 between 13.540 eV and 13.678 eV Photodissociation of CO 2 is investigated between 13.540 eV and 13.678 eV using the time-sliced velocity-mapped ion imaging (TSVMI) apparatus that is combined with one-color and two-color pumpprobe VUV + VUV and VUV + UV detection schemes by probing oxygen fragments at different levels.Several CO 2 dissociation channels are directly observed from the ion images, namely CO(and CO(e 3 S À ) + O( 3 P), whereas no CO(X 1 S + ) + O( 3 P) production has been found. The product kinetic energy distributions of these channels are reported for the first time. Possible dissociation mechanisms have been discussed based upon the product vibrational and rotational distributions.

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Tunable VUV radiation generated by two-photon resonant frequency mixing in xenon

Cited by 104 publications

References 25 publications

Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O₃→ ClO + O₂

Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O₃→ ClO + O₂

Rotational energy transfer in collisions between CO(X 1Σ+, v=2, J=0, 1, 4, and 6) and He at temperatures from 294 to 15 K

Photodissociation of CO₂between 13.540 eV and 13.678 eV

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Tunable VUV radiation generated by two-photon resonant frequency mixing in xenon

Cited by 104 publications

References 25 publications

Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O3→ ClO + O2

Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O3→ ClO + O2

Rotational energy transfer in collisions between CO(X 1Σ+, v=2, J=0, 1, 4, and 6) and He at temperatures from 294 to 15 K

Photodissociation of CO2between 13.540 eV and 13.678 eV

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Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O₃→ ClO + O₂

Vibrational Distribution of ClO Radicals Produced in the Reaction Cl + O₃→ ClO + O₂

Photodissociation of CO₂between 13.540 eV and 13.678 eV