Laser stimulated chemical reactions and isotope separation

Basov, N G; Belenov, É. M.; Исаков, В. А.; Markin, E. P.; Ораевский, А. Н.; Romanenko, V. I.; Ferapontov, N. B.

doi:10.1070/qe1975v005n05abeh011164

Cited by 12 publications

(4 citation statements)

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“…This process was achieved experimentally in the formation of NO by the reaction of N 2 or O 2 . 182 The vibrational excitation of N2 was achieved with the aid of SRS in liquid nitrogen. The absorption coefficient with respect to nitrogen-15 reached 10 2 under these conditions.…”

Section: Selective Dissociation Of Polyatomic Molecules Under Thementioning

confidence: 99%

Infrared Photochemistry

Panfilov¹,

Molin²

1978

Russ. Chem. Rev.

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Section: Selective Dissociation Of Polyatomic Molecules Under Thementioning

confidence: 99%

Infrared Photochemistry

Panfilov¹,

Molin²

1978

Russ. Chem. Rev.

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“…(1) and (2) we can express the sticking criterion as (4) (5) Consequently, the sticking probability is the fraction of collisions for which the surface momentum satisfies Eq. (4).…”

Section: Modelmentioning

confidence: 99%

A simple model for the internal mode dependence of gas/solid-surface sticking probabilities

Doll

1977

The Journal of Chemical Physics

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Articles you may be interested inA critical comparison of time dependent models for gas-surface sticking J. Chem. Phys. 98, 9905 (1993); 10.1063/1.464370 Spikes in the sticking probability of light gas particles on solid surfacesThe role of internal molecular modes in the determination of gas/solid-surface sticking probabilities is examined. It is found that, at least for low-frequency modes, internal excitation can appreciably inhibit sticking. A simple, phenomenological model of this effect is developed.

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“…The main problem with optical pumping, however, is that the use of efficient resonance absorption provides access only to a very few heteropolar molecules (such as CO and NO with a CO laser or CO with a frequency doubled CO 2 laser [8][9][10][11][12][13]). On the other hand, the use of nonlinear absorption techniques, such as PUMP-DUMP [14], RELIEF [15] and spontaneous Raman absorption [16], allows only pulsed mode operation and makes energy addition to vibrational modes of homopolar molecules, such as N 2 and O 2 , extremely inefficient. These obstacles prevent development of new promising applications of vibrationally 0022-3727/09/055508+07$30.00 nonequilibrium environments, including sustaining stable large-volume ionization in high-pressure air and energy efficient high-yield mode-selective chemical synthesis.…”

Section: Introductionmentioning

confidence: 99%

Temperature and vibrational distribution function in high-pressure diatomic gas mixture

Lou

Lempert

Adamovich

et al. 2009

J. Phys. D: Appl. Phys.

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Temperatures and vibrational populations are investigated experimentally and numerically in a CO–N2–O2 gas mixture. By spatially resolved Raman Q-branch spectra measurement, the strong vibrational excitation was observed in the gas mixtures at a high gas pressure. Numerical calculation, which incorporates both major processes of molecular energy transfer and diffusion of vibrationally excited species across the spatially nonuniform excitation region, provides indepth perception of vibrational kinetics of these diatomic molecular gas mixtures and is verified by the experimental data. The results demonstrate that strong vibrational nonequilibrium for all diatomic species can be sustained by the optical pumping method with a focused CO laser in a relatively cold (300–400 K) molecular gas mixture up to one atmospheric pressure. However, the results also demand further investigations on determining accurate rates of the V–V exchange gas mixture such as for N2–O2.

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Laser stimulated chemical reactions and isotope separation

Cited by 12 publications

References 1 publication

Infrared Photochemistry

Infrared Photochemistry

A simple model for the internal mode dependence of gas/solid-surface sticking probabilities

Temperature and vibrational distribution function in high-pressure diatomic gas mixture

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