TITLE

Resonant vibrational excitation of furan by low energy electron impact

AUTHOR(S)
Motte-Tollet, F.; Eustatiu, G.; Roy, D.
PUB. DATE
November 1996
SOURCE
Journal of Chemical Physics;11/1/1996, Vol. 105 Issue 17, p7448
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Our purpose was to investigate the resonant vibrational excitation of furan (C4H4O) in its electronic ground state by electron collisions. The electron energy loss measurements have been carried out at intermediate and low impact energies for a scattering angle of 30°. The spectra show peaks or groups of peaks corresponding to the excitation of the fundamental normal modes as also of the first harmonics and combinations. The energy dependence curve for the excitation of the C–H stretching vibrational modes is also reported for the impact energy range of 3–10 eV. It exhibits a broad structureless band with a maximum centered around 6 eV, which reveals an excitation mechanism through the intermediate of a shape resonance built on the electronic ground state of the neutral molecule. A comparison with benzene is made in order to help the analysis and to assign the nature as well as the symmetry of the resonance. © 1996 American Institute of Physics.
ACCESSION #
7619972

 

Related Articles

  • Collision lifetimes of polyatomic molecules at low temperatures: Benzene-benzene vs benzene-rare gas atom collisions. Jie Cui; Zhiying Li; Krems, Roman V. // Journal of Chemical Physics;10/28/2014, Vol. 141 Issue 16, p1 

    We use classical trajectory calculations to study the effects of the interaction strength and the geometry of rigid polyatomic molecules on the formation of long-lived collision complexes at low collision energies. We first compare the results of the calculations for collisions of benzene...

  • Quantum flux redistribution during molecular photodissociation. Manolopoulos, David E.; Alexander, Millard H. // Journal of Chemical Physics;8/15/1992, Vol. 97 Issue 4, p2527 

    A new method proposed recently by Alexander for studying the mechanisms of inelastic collisions is adapted to the study of molecular photodissociation. This adaptation involves the determination of the current density associated with a driven photodissociation wavefunction at each fixed...

  • Molecular exchange and its influence on the condensation coefficient. Meland, Roar // Journal of Chemical Physics;10/15/2002, Vol. 117 Issue 15, p7254 

    When a molecule condenses, it gains kinetic energy which is dissipated by collisions. There is then the possibility that a condensing molecule may kick out a molecule in the interphase or in the liquid. There has been reported a strong correlation between condensation and evaporation fluxes....

  • Vibrational relaxation of highly excited toluene. Toselli, Beatriz M.; Brenner, Jerrell D.; Yerram, Murthy L.; Chin, William E.; King, Keith D.; Barker, John R. // Journal of Chemical Physics;7/1/1991, Vol. 95 Issue 1, p176 

    The collisional loss of vibrational energy from gas-phase toluene, pumped by a pulsed KrF laser operating at 248 nm, has been observed by monitoring the time-resolved infrared fluorescence from the C–H stretch modes near 3.3 μm. The fragmentation quantum yield of toluene pumped at 248...

  • Calculations of Einstein A coefficients for transitions between vibrational levels in NO(a 4Π). Cosby, P. C.; Huestis, D. L.; Slanger, T. G. // Journal of Chemical Physics;11/1/1992, Vol. 97 Issue 9, p5952 

    The dipole moment function calculated by Langhoff et al. [J. Mol. Spectrosc. 138, 123 (1989)] for NO(a 4Π) has been used in conjunction with an RKR potential to obtain the vibrational transition probabilities of this state, for levels v=1–19. The probabilities increase with v, from 5...

  • Non-Lorentzian depolarized Raman line shapes in n-pentanol. Di Fabrizio, E.; Nardone, M.; Nucara, A.; Gallo, P.; Ruocco, G. // Journal of Chemical Physics;11/1/1992, Vol. 97 Issue 9, p6136 

    High resolution depolarized Raman spectra of n-pentanol in the -30 to 60° C temperature range are reported. The spectra appear as a continuously decreasing line shape centered at zero frequency. A quantitative analysis of this line shape shows a high frequency exponential tail, which can...

  • Irreducible dipole components of three interacting H2 molecules and the triple Q1 transition near 12 466 cm-1. Moraldi, Massimo; Frommhold, Lothar // Journal of Chemical Physics;8/15/1995, Vol. 103 Issue 7, p2377 

    We have previously obtained parameter-free models of the overlap-induced, irreducible, ternary dipole components of three interacting H2 molecules, which were successful in reproducing existing measurements of the ternary collision-induced absorption in the H2 fundamental band [Phys. Rev. A 49,...

  • Vaporization of Small Spherical Drops in a Gas. Kozyrev, A. V.; Sitinikov, A. G. // Russian Physics Journal;Mar2004, Vol. 47 Issue 3, p300 

    The process of vaporization of a small (compared to the free path of molecules in the medium) spherical liquid drop in an infinite nonabsorbing gaseous medium is considered. Analytical expressions for the time dependence of the drop radius are derived under assumption that vaporized molecules...

  • Statistical modeling of capture, association, and exit-channel dynamics in the CH3+/CH3CN system. Smith, S. C.; Wilson, P. F.; Sudkeaw, P.; Maclagan, R. G. A. R.; McEwan, M. J.; Anicich, V. G.; Huntress, W. T. // Journal of Chemical Physics;2/1/1993, Vol. 98 Issue 3, p1944 

    The ion–molecule reaction CH3++CH3CN is known to have an association channel leading to CH3CNCH3+ in competition with the exothermic binary channels H2CN++C2H4 and C2H5++HCN. This reaction has been modeled using a master equation treatment incorporating weak collisions. The parameters...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics