Practical Method for Producing a Large Amount of Isotopically Enriched Silicon by Infrared Multi-Photon Dissociation of Hexafluorodisilane
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概要
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This paper presents a practical method for producing highly enriched silicon isotopes utilizing laser irradiation. One- or two-frequency CO2 laser irradiation has been employed to separate the desired isotope of silicon by means of infrared multi-photon dissociation (IRMPD) of hexafluorodisilane (Si2F6) molecules using a flow reaction system. The production of Si2F6 with a 28Si fraction of 99.1% at a rate of 0.67 g (28Si)/h was successfully accomplished with a yield of about 63% by two-frequency laser irradiation. Enriched SiF4 gas with 30Si exceeding 31% was also continuously obtained at a production rate of 0.12 g/h by one-frequency laser irradiation.
- 2008-11-25
著者
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Yokoyama Atsushi
Quantum Beam Science Directorate Japan Atomic Energy Agency
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Akagi Hiroshi
Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Ohba Hironori
Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Katsumata Keiichi
Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Hashimoto Masashi
Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
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Yokoyama Atsushi
Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
関連論文
- Spectroscopic Study of Photoreduction by the Fourth Harmonic of Nd:YAG Laser in a Liquid-Liquid Extraction System
- Practical Method for Producing a Large Amount of Isotopically Enriched Silicon by Infrared Multi-Photon Dissociation of Hexafluorodisilane