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- W2044004296 abstract "Abstract Tritium isotope separation was attempted by laser-induced multiphoton dissociation (MPD) of tritiated heptafluoropropanes CF 3 CF 2 CTF 2 ( n -C 3 TF 7 ) and CF 3 CTFCF 3 ( i -C 3 TF 7 ) using a transversely excited atmospheric pressure CO 2 laser. The isotopically selective MPD of n -C 3 TF 7 was expected at frequencies below the 10 μm region. The MPD spectrum of i -C 3 TF 7 showed a maximum at about 1000 cm −1 where i -C 3 HF 7 was almost transparent. The dissociation rate constant and isotopic selectivity were studied as a function of the sample pressure, the temperature and the irradiation geometry. The critical fluence for dissociation of i -C 3 TF 7 was found to be as low as 9 J cm −2 at 10 R(30) (982.1 cm −1 ), which is lower than those for tritiated trifluoromethane (CTF 3 ) and pentafluoroethane (C 2 TF 5 ). High isotopic selectivities exceeding 1400 were attained with i -C 3 TF 7 - i C 3 HF 7 at 982.1 cm −1 . An extremely large hydrogen isotope exchange rate was observed between i -C 3 HF 7 and tritiated water. These results indicate that i -C 3 TF 7 can be used as one of the most promising molecules for laser isotope separation of tritium." @default.
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- W2044004296 date "1984-11-01" @default.
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- W2044004296 title "CO2 laser isotope separation of tritium with heptafluoropropanes (CF3CF2CTF2 and CF3CTFCF3" @default.
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- W2044004296 doi "https://doi.org/10.1016/0047-2670(84)85031-5" @default.
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