The dynamics of photoprocesses induced by femtosecond infrared radiation in free Fe(CO)5 molecules and their clusters owing to the resonant excitation of vibrations of CO bonds in the 5-μm range has been studied. The technique of infrared excitation and photoionization probing (λ = 400 nm) by femtosecond pulses has been used in combination with time-of-flight mass spectrometry. It has been found that an infrared pulse selectively excites vibrations of CO bonds in free molecules, which results in a decrease in the yield of the Fe(CO)5 + molecular ion. Subsequent relaxation processes have been analyzed and the results have been interpreted. The time of the energy transfer from excited vibrations to other vibrations of the molecule owing to intramolecular relaxation has been measured. The dynamics of dissociation of [Fe(CO)5] n clusters irradiated by femtosecond infrared radiation has been studied. The time dependence of the yield of free molecules has been measured under different infrared laser excitation conditions. We have proposed a model that well describes the results of the experiment and makes it possible, in particular, to calculate the profile of variation of the temperature of clusters within the “evaporation ensemble” concept. The intramolecular and intracluster vibrational relaxation rates in [Fe(CO)5] n clusters have been estimated.
This is a preview of subscription content, access via your institution.
Buy single article
Instant access to the full article PDF.
Tax calculation will be finalised during checkout.
V. S. Letokhov, Nonlinear Selective Photoprocesses in Atoms and Molecules (Nauka, Moscow, 1983) [in Russian].
V. N. Bagratashvili, V. S. Letokhov, A. A. Makarov, and E. A. Ryabov, Multiple Photon Infrared Laser Photophysics and Photochemistry (Harwood Academic, Chur, 1985).
D. W. Lupo and M. Quack, Chem. Rev. 87, 181 (1987).
Laser Spectroscopy of Highly Vibrationally Excited Molecules, Ed. by V. S. Letokhov (Adam Hilger, Bristol, 1989).
K. K. Lehmann, G. Scoles, and B. H. Pate, Ann. Rev. Phys. Chem. 45, 241 (1994).
D. J. Nesbitt and R. W. Field, J. Phys. Chem. 100, 12735 (1996).
A. A. Makarov, A. L. Malinovsky, and E. A. Ryabov, Phys. Usp. 55, 977 (2012).
H. S. Yoo, D. A. McWhorter, and B. H. Pate, J. Phys. Chem. A 108, 131380 (2004).
A. L. Malinovsky, A. A. Makarov, and E. A. Ryabov, JETP Lett. 80, 532 (2004).
A. L. Malinovsky, Yu. S. Doljikov, A. A. Makarov, et al., Chem. Phys. Lett. 419, 511 (2006).
S. V. Chekalin, V. O. Kompanets, P. V. Koshlyakov, et al., J. Phys. Chem. A 118, 955 (2014).
H. Pauly, Atom, Molecule and Cluster Beams II (Springer, New York, 2000).
Atomic and Molecular Beam Methods, Ed. by G. Scoles (Oxford Univ. Press, New York, 1988), Vol. 1.
Atomic and Molecular Beam Methods, Ed. by G. Scoles (Oxford Univ. Press, New York, 1992), Vol. 2.
U. Buck, J. Phys. Chem. 92, 1023 (1988).
V. N. Lokhman, D. D. Ogurok, and E. A. Ryabov, Chem. Phys. 333, 85 (2007).
V. N. Lokhman, D. D. Ogurok, and E. A. Ryabov, J. Exp. Theor. Phys. 108, 727 (2009).
V. M. Apatin, V. N. Lokhman, D. D. Ogurok, et al., Eur. Phys. J. D 67, 66 (2013).
D. G. Poydashev, V. N. Lokhman, V. O. Kompanets, et al., J. Phys. Chem. A 118, 11177 (2014).
M. K. Au, P. A. Hackett, M. Humphries, and P. John, Appl. Phys. B 33, 43 (1984).
L. Windhorn, T. Witte, J. S. Yeston, et al., Chem. Phys. Lett. 357, 85 (2002).
V. M. Apatin, V. O. Kompanets, V. N. Lokhman, N.-D. D. Ogurok, D. G. Poydashev, E. A. Ryabov, and S. V. Chekalin, J. Exp. Theor. Phys. 115, 567 (2012).
O. F. Hagena, Rev. Sci. Instrum. 63, 2374 (1992).
L. Banares, T. Baumert, M. Berg, et al., J. Chem. Phys. 108, 5799 (1998).
C. W. F. T. Pistorius and P. C. Haarhoff, J. Chem. Phys. 31, 1439 (1959).
M. Dartiguenave, Y. Dartiguenave, and H. B. Gray, Bull. Soc. Chim. Fr. 12, 4223 (1966).
S. Yan, M. T. Seidel, Z. Zhang, et al., J. Chem. Phys. 135, 024501 (2011).
J. Cahoon, K. Sawyer, J. Schlegel, and C. Harris, Science 319, 1820 (2008).
A. Laubereau and W. Kaiser, Rev. Mod. Phys. 50, 607 (1978).
M. Banno, K. Iwata, and H. Hamaguchi, J. Chem. Phys. 126, 204501 (2007).
J. Gspann, Z. Phys. D 3, 143 (1986).
C. E. Klots, Z. Phys. D 21, 335 (1991).
G. N. Makarov, Phys. Usp. 54, 351 (2011).
C. E. Klots, Z. Phys. D 20, 105 (1991).
A. A. Vostrikov and D. Yu. Dubov, J. Exp. Theor. Phys. 98, 197 (2004).
Original Russian Text © V.O. Kompanets, V.N. Lokhman, D.G. Poydashev, S.V. Chekalin, E.A. Ryabov, 2016, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 149, No. 4, pp. 723–736.
About this article
Cite this article
Kompanets, V.O., Lokhman, V.N., Poydashev, D.G. et al. Dynamics of photoprocesses induced by femtosecond infrared radiation in free molecules and clusters of iron pentacarbonyl. J. Exp. Theor. Phys. 122, 621–632 (2016). https://doi.org/10.1134/S1063776116020199
- Probe Pulse
- Free Molecule
- Resonant Excitation
- Multiphoton Ionization
- Cluster Beam