Abstract
Searching for oxygen-isotope selectivity, we investigated the infrared multiphoton dissociation of the formaldehyde trimer around 10 µm, in a range where the molecule has a degenerate and a non-degenerate CO stretch vibration and a degenerate CH2 deformation vibration. In the region of the two latter, the wavelength dependence of the dissociation yield exhibits sharp structures. They were assigned ton-photon resonances (n = 2, 3, 5) by the help of the IR spectrum in the fundamental and overtone region. The O and C selectivities were very small (1.05) near the non-degenerate CO stretch band, but surprisingly large (2–4) in the CH2 deformation, which has no isotopic shift. The selectivity is not controlled by the first (n-photon) excitation step, but only by a later step. Its assignment is attempted. The pressure dependence of the dissociation is peculiar: Only after an initial decrease, the yield exhibits the usual rise with pressure. We attribute the decrease to a relaxation which perturbs the two-photon resonance.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
W. Fuß, J. Göthel, M. Ivanenko, W.E. Schmid, P. Hering, K.L. Kompa, K. Witte: Isotopenpraxis30, 199 (1994) C. D'Ambrosio, W. Fuß, K.L. Kompa, W.E. Schmid, S. Truŝin: Infrared Phys.29, 479 (1989)
A. Outhouse, P. Lawrence, M. Gauthier, P.A. Hackett: Appl. Phys. B36, 63 (1985) and references therein
V.Yu. Baranov: IEEE J. QE-19, 1577 (1983)
Je.A. Rjabov: Private communication (1994)
S. Arai, H. Kaetsu, S. Isomura: Appl. Phys. B53, 199 (1991)
W. Fuß, W.E. Schmid: Ber. Bunsenges.83, 1148 (1979) V.Yu. Baranov, E.P. Velikhov, S.A. Kazakov, Yu.R. Kolomiiskii, V.S. Letokhov, V.D. Pis'mennyi, E.A. Ryabov, A.I. Starodubtsev: Sov. J. Quantum Electron.9, 486 (1979) B.B. McInteer, J.L. Lyman, G.P. Quigley, A.C. Nilsson: InProc. Int'l Symp., Kansas City (1982), ed. by W.F. Duncan, A.B. Susan (Elsevier, Amsterdam 1982)
U. Del Bello, W. Fuß, K.L. Kompa, F.M.G. Tablas: J. Chem. Phys.90, 3055 (1989)
W. Fuß: Bull. Res. Lab. Nucl. Reactors, Special Issue1, 38 (1992)
V.B. Laptev, L.M. Tumanova, V.A. Kuz'menko, E.A. Ryabov: Appl. Phys. B51, 454 (1990)
V.B. Laptev, E.A. Ryabov, L.M. Tumanova: Appl. Phys. B49, 77 (1989)
K.O. Kutschke, C. Willis, P.A. Hackett: J. Photochem.21, 207 (1983)
V.V. Vizhin, Yu. N. Molin, A.K. Petrov, A.R. Sorokin: Appl. Phys.17, 385 (1978)
T. Majima, K. Sugita, Sh. Arai: Chem. Phys. Lett.163, 29 (1989)
V.B. Laptev, E.A. Ryabov, L.M. Tumanova: Sov. J. Quantum Electron.19, 827 (1989)
I.K. Bildinov, V.B. Laptev, E.A. Ryabov, L.M. Tumanova: Laser Chem.12, 173 (1992)
S. Hochgreb, F.L. Dryer: J. Phys. Chem.96, 295 (1992)
X. Zheng, Z. Xu, F. Kong: Chem. Phys. Lett.85, 418 (1982)
C. Steel, R. Schatzberger, S. Kimel: Spectrochim. Acta A43, 149 (1987)
M. Kobayashi, R. Iwamoto, H. Tadokoro: J. Chem. Phys.44, 922 (1966)
M. Kobayashi: J. Chem. Phys.66, 32 (1977)
A.T. Stair, J.R. Nielsen: J. Chem. Phys.27, 402 (1957)
J-F. Henninot, H. Bolvin, J. Demaison, B. Lemoine: J. Mol. Spectrosc.152, 62 (1992)
S. Pinchas, I. Laulicht:Infrared Spectra of Labelled Compounds (Academic, London 1971)
G. Herzberg:Molecular Spectra and Molecular Structure. II. Infrared and Raman Spectra of Polyatomic Molecules (Van Nostrand, New York 1945)
W. Fuß: Chem. Phys.36, 135 (1979)
W. Fuß, K.L. Kompa: Prog. Quantum Electron.7, 117 (1981)
M. Iwasaki, T. Sakka, A. Yokoyama, K. Suzuki: Chem. Phys. Lett.187, 433 (1991)
V.S. Letokhov:Nonlinear Laser Chemistry. Multiple-Photon Excitation, Springer Ser. Chem. Phys., Vol. 22 (Springer, Berlin, Heidelberg 1983)
M. Quack: J. Chem. Phys.69, 1282 (1978)
E. Thiele, J. Stone, M.F. Goodman: Chem. Phys. Lett.66, 457 (1979)
V.B. Laptev, N.P. Furzikov: Sov. J. Quantum Electron.17, 1570 (1987)
J.A. Torresano, M. Santos, P.F. Gonzalez-Diaz: Laser Chem.14, 217 (1994)
V.N. Bagratashvili, M.V. Kuzmin, R.R. Osmanov, F.N. Putilin, L.N. Vereshchagina: Chem. Phys. Lett.120, 211 (1985)
W. Fuß: J. Phys. Chem.86, 731 (1982)
N.V. Chekalin, V.S. Dolzhikov, Yu.R. Kolomisky, V.S. Letokhov, V.N. Lokhman, E.A. Ryabov: Appl. Phys.13, 311 (1977)
M. Nève de Mévergnies, P. del Marmol: J. Chem. Phys.73, 3011 (1980)
A. Baldacci, A. Passerini, S. Ghersetti: J. Mol. Spectrosc.91, 103 (1982)
P. Fettweis, M. Nève de Mévergines: J. Appl. Phys.49, 5699 (1978); Appl. Phys.13, 311 (1977)
C. D'Ambrosio, W. Fuß, K.L. Kompa, W.E. Schmid: Ber. Bunsenges. Phys. Chem.92, 646 (1988)
W. Fuß, J. Göthel, M. Ivanenko, K.L. Kompa, W.E. Schmid: Z. Phys. D24, 47 (1992)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Churakov, V., Fuss, W. Isotopically selective IR multiphoton dissociation of 1,3,5-trioxane. Appl. Phys. B 62, 203–212 (1996). https://doi.org/10.1007/BF01081126
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01081126