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Investigations of multiphoton selective dissociation of (CH3)2O in the field of a pulsed CO2 laser

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Abstract

Experimental investigations of multiphoton selective dissociation of (CH3)2O induced by a pulsed CO2 laser have been conducted. Separation of H, C, and O isotopes was performed in enriched mixtures and in samples with the natural abundance. The following coefficients of selectivity have been obtained:K D/KH=4.0,K 13/K12=1.7, andK 18/K16≧1.6. We studied the dependences of the selectivity coefficient on ether pressure, on the laser energy and frequency as well as the influence of secondary chemical reactions on the dissociation selectivity. Estimations made by using the RRKM theory have indicated that ether molecules that decompose have an average excitation energy above the dissociation threshold of ∼1.5 kcal/mole.

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References

  1. 1.

    N.R.Isenor, V.Merchant, H.S.Hallsworth, M.C.Richardson: Can J. Phys.51, 1281 (1973)

  2. 2.

    R.V.Ambartzumyan, V.S.Letokhov, Ye.A.Ryabov, N.V.Chekalin: ZhETF Pisma20, 597 (1974)

  3. 3.

    R.V.Ambartzumyan, Yu.A.Gorokhov, V.S.Letokhov, G.N.Makarov: ZhETF Pisma21, 375 (1975)

  4. 4.

    R.V.Ambartzumyan, Yu.A.Gorokhov, V.S.Letokhov, G.N.Makarov, A.A.Puretsky: ZhETF71, 440 (1976)

  5. 5.

    R.V.Ambartzumyan, Yu.A.Gorokhov, V.S.Letokhov, G.N.Makarov, A.A.Puretsky, N.P.Furzikov: ZhETF Pisma23, 217 (1976)

  6. 6.

    C.D.Cantrell, H.W.Galbraith: Optics Comm.18, 513 (1976)

  7. 7.

    C.D.Cantrell, H.W.Galbraith: Optics Comm.21, 374 (1977)

  8. 8.

    S.S.Alimpiyev, V.N.Bagratashvili, N.V.Karlov, V.S.Letokhov, V.V.Lobko, A.A.Makarov, B.G.Sartakov, E.M.Khokhlov: ZhETF Pisma25, 582 (1977)

  9. 9.

    W.Fuss, T.P.Cotter: Appl. Phys.12, 265 (1977)

  10. 10.

    V.N.Ishchenko, V.N.Lisitsyn, V.P.Safonov, A.R.Sorokin: Kvantovaya Elektronika2, 1374 (1975)

  11. 11.

    F.M.Rapoport, A.A.Ilyinskaya:Laboratory Methods of Production of Pure Gases (Goskhimizdat, Moscow 1963), p. 410

  12. 12.

    S.W.Benson, D.V.S.Jain: J. Chem. Phys.31, 1008 (1959)

  13. 13.

    V.V.Vizhin, V.N.Lisitsyn, A.K.Petrov, A.R.Sorokin: Izv. AN SSSR, Ser. Khim. No.2, 485 (1977)

  14. 14.

    V.V.Vizhin, Yu.N.Molin, A.K.Petrov, V.N.Lisitsyn, A.R.Sorokin: Reac. Kin. Cat. Lett.7, 303 (1977)

  15. 15.

    V.V.Vizhin, A.K.Petrov, S.I.Turyev, A.V.Baklanov: Reac. Kin. Cat. Lett. (to be published)

  16. 16.

    V.N.Kondratyev:Rate Constants of Gas-Phase Reactions (Nauka, Moscow 1971)

  17. 17.

    P.J.Robinson, K.A.Holbrook:Unimolecular Reactions (Wiley, New York 1972)

  18. 18.

    K.N.Anderson, S.W.Benson: J. Chem. Phys.39, 1677 (1963)

  19. 19.

    L.M.Sverdlov, M.A.Kovner, Ye.P.Krainov:Vibrational Spectra of Polyatomic Molecules (Nauka, Moscow 1970) p. 426

  20. 20.

    Thermodynamical Properties of Individual Substances, Vol. 1, ed. by V.P.Glushko (Izd. AN SSSR, Moscow 1962), p. 620

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Vizhin, V.V., Molin, Y.N., Petrov, A.K. et al. Investigations of multiphoton selective dissociation of (CH3)2O in the field of a pulsed CO2 laser. Appl. Phys. 17, 385–391 (1978). https://doi.org/10.1007/BF00886210

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