Infrared Multiphoton Dissociation of UF<sub>6</sub>in Supersonic Nozzle Reactor

Takeuchi, Kazuo; Tashiro, Hideo; Kato, Shingo; Midorikawa, Katsumi; Ōyama, Toshiyuki; Satooka, Sakae; Namba, Susumu

doi:10.1080/18811248.1989.9734307

Cited by 36 publications

(2 citation statements)

References 6 publications

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“…The choice of methane was determined by its higher heat capacity, because it has vibrational and rotational degrees of freedom. In addition, it is known that its small addition to noble gases was used to suppress the formation of clusters in experiments with UF 6 [37]. In all these experiments, the degree of dilution of SF 6 with respect to the other components of mixtures remained at the same level (≈1/200) at which the experiments using argon only as a carrier gas were carried out.…”

Section: Investigations With Other Carrier Gasesmentioning

confidence: 99%

Isotope-selective control of the clusterization of SF₆molecules by an IR laser during gasdynamic expansion of an SF₆/Ar mixture

et al. 2018

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We present the results of our investigation into the isotope-selective control of the clusterization of SF 6 molecules during their gasdynamic expansion in a mixture with an argon carrier gas using IR laser radiation. The method is based on the selective vibrational excitation of molecules of a chosen isotopic composition by an IR laser near the nozzle edge, which leads to the suppression of their clusterization with each other and with argon atoms. The experimental setup and the method of investigation are described. Results are presented on determining the efficiency and the selectivity of the clusterization suppression of molecules at different gas compositions above the nozzle, as well as at different distances of the irradiation region of particles from the nozzle edge. Dependences of the clusterization suppression efficiency on the frequency and power of the exciting laser radiation are obtained. Experiments on the selective suppression of the clusterization of SF 6 molecules in mixtures with other carrier gases have also been performed. It is found that controlling the clusterization process of SF 6 molecules in a mixture with the argon carrier gas makes it possible to achieve relatively high selectivity values. Thus, in the case of using an SF 6 /Ar mixture at a 1/200 pressure ratio, the obtained selectivity of the clusterization suppression of 32 SF 6 molecules with respect to 34 SF 6 molecules under jet irradiation at the 10P(16) CO 2 laser line (at a frequency of 947.74 cm −1 ) was α( 32 SF 6 / 34 SF 6 ) 10−20. Conditions are found under which optimal values of the efficiency and selectivity of the clusterization suppression of molecules are realized.

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Section: Investigations With Other Carrier Gasesmentioning

confidence: 99%

Isotope-selective control of the clusterization of SF₆molecules by an IR laser during gasdynamic expansion of an SF₆/Ar mixture

et al. 2018

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“…Many scientific and technical applications are expected for small compact transverse, electric, atmospheric (TEA) CO 2 lasers [1]. Laser radar [2], multi-photon induced chemistry including a heavy molecular excitation [3], and laser material processing [1] are some of the main applications of these lasers. In spite of enormous efforts since 1960s, and contrary to continuous wave CO 2 lasers, which play indispensable roles in present industry, high repetition rate TEA CO 2 lasers are far from being used extensively in usual industries.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of sealed off operation of a high repetition rate TEA CO₂ laser

Torkamany¹,

Kavian

Zand

2006

Laser Phys. Lett.

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Design and construction of a high repetition rate low average power TEA CO2 laser with ultra violet pre ionization is presented. Replacing thyratron with a high voltage semiconductor switch and magnetic pulse compressor considering the highest peak power achievable is investigated. When using semiconductors as main switch of laser excitation circuit the output energy and laser power is lower about 5-10% relative to thyratron excitation circuit but the sealed off operation of laser is more uniform.Thyratron based excitation circuit Semiconductor based excitation circuit

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Molecular Spectroscopy and Reactions of Actinides in the Gas Phase and Cryogenic Matrices

Gibson¹,

Marçalo²

2010

The Chemistry of the Actinide and Transactinide Elements

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Infrared Multiphoton Dissociation of UF₆in Supersonic Nozzle Reactor

Cited by 36 publications

References 6 publications

Isotope-selective control of the clusterization of SF₆molecules by an IR laser during gasdynamic expansion of an SF₆/Ar mixture

Isotope-selective control of the clusterization of SF₆molecules by an IR laser during gasdynamic expansion of an SF₆/Ar mixture

Experimental study of sealed off operation of a high repetition rate TEA CO₂ laser

Molecular Spectroscopy and Reactions of Actinides in the Gas Phase and Cryogenic Matrices

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Infrared Multiphoton Dissociation of UF6in Supersonic Nozzle Reactor

Cited by 36 publications

References 6 publications

Isotope-selective control of the clusterization of SF6molecules by an IR laser during gasdynamic expansion of an SF6/Ar mixture

Isotope-selective control of the clusterization of SF6molecules by an IR laser during gasdynamic expansion of an SF6/Ar mixture

Experimental study of sealed off operation of a high repetition rate TEA CO2 laser

Molecular Spectroscopy and Reactions of Actinides in the Gas Phase and Cryogenic Matrices

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Infrared Multiphoton Dissociation of UF₆in Supersonic Nozzle Reactor

Isotope-selective control of the clusterization of SF₆molecules by an IR laser during gasdynamic expansion of an SF₆/Ar mixture

Isotope-selective control of the clusterization of SF₆molecules by an IR laser during gasdynamic expansion of an SF₆/Ar mixture

Experimental study of sealed off operation of a high repetition rate TEA CO₂ laser