Carbon Isotope Separation by Infrared Multiple Photon Decomposition with a Free Electron Laser.
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概要
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To verify infrared multiple photon decomposition (IRMPD) by our free electron laser (FEL), 0.8 Ton of CF<SUB>3</SUB>I was irradiated with 9.5μm FEL pulses. The fluence of the macropulse used was estimated to be 8J/cm<SUP>2</SUP> at the beam waist. About 3% of the CF<SUB>3</SUB>I sample was found to decompose without selectivity by irradiating it with 3. 6 × 10<SUP>4</SUP> macropulses. In order to examine decomposition yields and isotope selectivities, 5 Torr of CHBrF<SUB>2</SUB> was irradiated at a fluence of 16J/cm<SUP>2</SUP> with FEL pulses in the wavelength region from 9.3 to 9.7μm. The IRMPD of CHBrF<SUB>2</SUB> was found to produce C<SUB>2</SUB>F<SUB>4</SUB>. The significant enrichment of <SUP>13</SUP>C in the product was obtained with the irradiation at 9.7μm. The atomic fraction of <SUP>13</SUP>C obtained was as high as 6%. The decomposition yield is related to the diffusion of reactant molecules in a vicinity of a small photolysis volume.
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社団法人 レーザー学会 | 論文
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