Time and spectrally resolved fluorescence of Cl*2 and ArCl* in Cl2 doped Ar Under state selective pulsed photoexcitation with synchrotron radiation
Tóm tắt
Synchrotron Radiation is used to selectively excite chlorine and Cl2 doped argon in the VUV region. Stationary fluorescence and excitation spectra of the 11Σ
+
, 21Σ
+
and 23Πg Cl
2
*
states and of the ArCl*(B−X) transition are obtained. The excitation threshold of ArCl*(B) in Ar/Cl2 system is found to be 1,285±5 Å and that of ArCl(C) at ∼1,260 Å. The formation of ArCl* and Cl*2(23Πg) is discussed in terms of recent potential curves data. A detailed time resolved study is reported which allows us to determine precisely the radiative lifetime of ArCl*(B) state (5.2 ns) and numerous kinetic parameters of this system, to estimate theC state energy and to discuss the relaxation and mixing process of the ArCl*(B) and (C) states. A two ladder multilevel kinetic model is described which accounts for the experimental results and shows the difficulty of studying this particular ArCl* system as compared to the closely related XeCl* and KrCl* ones.
Tài liệu tham khảo
Krauss, M., Mies, F.H.: Excimer lasers. In: Topics in Applied Physics. Rhodes, C. (ed.), Vol. 30, pp. 5–46. Berlin, Heidelberg, New York: Springer-Verlag 1979
Hay, P.J., Dunning, T.H.: J. Chem. Phys.69, 2209 (1978)
Dunning, T.H., Hay, P.J.: J. Chem. Phys.69, 134 (1978)
Brau, Ch.A.: Excimer Lasers. In: Topics in Applied Physics. Rhodes, C. (ed.), Vol. 30, pp. 87–133. Berlin, Heidelberg, New York: Springer-Verlag 1979
Johnson, T.H., Hunter, A.M.: J. Appl. Phys.51, 2406 (1980)
Sauerbrey, R., Walter, W., Tittel, F.K., Wilson, W.L.: J. Chem. Phys.78, 735 (1983)
Liegel, J., Spiegel, H., Sauerbrey, R., Langhoff, H.: J. Chem. Phys.79, 247 (1983)
Velazco, J.E., Kolts, J.H., Setser, D.W.: J. Chem. Phys.65, 3468 (1976)
Gundel, L.A., Setser, D.W., Clyne, M.A.A., Coxon, J.A., Nip, W.: J. Chem. Phys.64, 4390 (1976)
Golde, M.F., Poletti, R.A.: Chem. Phys. Lett.80, 23 (1981)
Tamagake, K., Kolts, J.H., Setser, D.W.: J. Chem. Phys.71, 1264 (1979)
Inoue, G., Ku, J.K., Setser, D.W.: J. Chem. Phys.80, 6006 (1984)
Setser, D.W., Ku, J.: Photophysics and photochemistry above 6 eV. pp. 621–637. Amsterdam: Elsevier 1985
Castex, M.C., Le Calvé, J., Haaks, D., Jordan, B., Zimmerer G.: Chem. Phys. Lett.70, 106 (1980)
Le Calvé, J., Castex, M.C., Haaks, D., Jordan, B., Zimmerer, G.: Nuovo Cimento63 B, 265 (1981)
Jordan, B.: Thesis, University of Hamburg (1983)
Zimmerer, G.: Photophysics and photochemistry above 6 eV. pp. 357–374. Amsterdam: Elsevier 1985
Möller, T., Jordan, B., Gurtler, P., Zimmerer, G., Haaks, D., Le Calvé, J., Castex, M.C.: Chem. Phys.76, 295 (1983)
Möller, T.: Diploma work, University of Hamburg (1982) and Int. Report DESY F41 — HASYLAB 82-07 (1982)
Douglas, A.E.: Can. J. Phys.59, 835 (1981)
Le Calvé, J., Castex, M.C., Jordan, B., Zimmerer, G., Möller, T., Haaks, D.: Photophysics and photochemistry above 6 eV. pp. 639–651. Amsterdem: Elsevier 1985
Hahn, V., Schwentner, N., Zimmerer, G.: Nucl. Instrum. Methods152, 261 (1978)
Munro, I.H., Schwentner, N.: Nucl. Instrum. Methods208, 819 (1983)
Striker, G.: Private communication
Wilcke, H., Bohmer, W., Haensel, R., Schwentner, N.: Nucl. Instrum. Methods208, 59 (1983)
Gürtler, P., Roick, E., Zimmerer, G., Pouey, M.: Nucl. Instrum. Methods208, 835 (1983)
McCusker, M.: Excimer lasers. In: Topics in Applied Physics. Rhodes, C. (ed.), Vol. 30, pp. 47–86. Berlin, Heidelberg, New York: Springer-Verlag 1979
Diegelmann, M., Hohla, K., Rebentrost, F., Kompa, K.L.: J. Chem. Phys.76, 1233 (1982)
Yu, Y.C.: Ph. D. Thesis, Kansas State University (1984)
Huber, K.P., Herzberg, G.: Molecular spectra and molecular structure. New York, Toronto: van Nostrand Reinhold Company 1979
Rosenstock, H.M., Draxl, K., Steiner, B.W., Herron, J.T.: J. Phys. Chem. Ref. Data6, Sup. 1 (1977) (Energetics of gaseous ions, N.B.S. publication)
Brau, C.A., Ewing, J.J.: J. Chem. Phys.63, 4640 (1975)
Peyerimhoff, S.D., Buenker, R.J.: Chem. Phys.57, 279 (1981)
Wilson, M.W., Rohschild, M., Rhodes, C.K.: J. Chem. Phys.78, 3779 (1983)
Zuev, V.S., Kanaev, A.V., Mikheev, L.D.: Sov. J. Quant. Electron.14, 242 (1984)
Rice, S.A., Klemperer, W.: J. Chem. Phys.27, 573 (1957)
Smith, I.W.M.: Kinetics and dynamics of elementary gas reactions. Butterworth Monographs in Chemistry (1981)
Rapp, D., Kassal, T.: Chem. Rev.69, 61 (1969)
Lorents, D.C.: Lasers'84 Conference and private communication
Durrett, M.G.: Master thesis, University of Houston (1982)
Dreiling, T.D., Setser, D.W.: J. Chem. Phys.75, 4360 (1981)
Bibinov, N.K., Vinogradov, I.P.: Sov. J. Quant. Electron.13, 1286 (1983)
Helm, H., Jusinski, L.E., Lorents, D.C., Huestis, D.L.: J. Chem. Phys.80, 1796 (1984)
Liegel, J.: Thesis, University of Würzburg (1984)
Hess, B., Buenker, R.J.: Private communication