Thomas-Fermi model of Coulomb explosion of small molecules

Brewczyk, Miroslaw; Rza¸z.ewski, Kazimierz
July 2000
AIP Conference Proceedings;2000, Vol. 525 Issue 1, p407
Academic Journal
We have developed the time-dependent Thomas-Fermi model of molecules exposed to an intense femtosecond laser pulses. We investigate the multielectron dissociative ionization of small molecules. Kinetic energy defect is considered for both linearly and circularly polarized laser pulses and is compared with recently performed experiments. Some predictions, not verified experimentally yet, are presented. Finally, we analyze lossless versus lossy versions of time-dependent Thomas-Fermi model. © 2000 American Institute of Physics.


Related Articles

  • Ionization of thomas-fermi metal clusters by a laser field. Krainov, V. P.; Smirnov, M. B. // AIP Conference Proceedings;2000, Vol. 525 Issue 1, p519 

    The analytic model of the Thomas-Fermi-Dirac metal clusters with large number of particles is developed using the jellium approximation for positive ions inside the cluster. The semiclassical distributions of electrons have been derived for various metal clusters and cluster ions within the...

  • Extension of complete basis set model chemistries to molecules containing third row atoms Ga–Kr. Ramakrishna, Vinutha; Duke, Brian J. // Journal of Chemical Physics;4/8/2003, Vol. 118 Issue 14, p6137 

    The complete basis set methods, CBS-4, CBS-q, CBS-Q and CBS-QB3, have been extended to molecules containing the third row elements Ga-Kr and their performance is assessed on 40 energies (atomization energies, ionization energies, electron affinities, and proton affinities) from the third row G2...

  • Direct multiquantum relaxation of highly vibrationally excited NO in collisions with O/Cu(111). Hou, H.; Huang, Y.; Gulding, S.J.; Rettner, C.T.; Auerbach, D.J.; Wodtke, A.M. // Journal of Chemical Physics;6/8/1999, Vol. 110 Issue 22, p10660 

    Studies the direct multiquantum relaxation of highly vibrationally excited molecules at solid surfaces. Resonance enhanced multiphoton ionization (REMPI) spectrum of scattered molecules resulting from vibrational inelastic surface scattering; Time-of-flight measurements of the products...

  • Orientational averaging in the intense field tunnel ionization of molecules. DeWitt, Merrick J.; Prall, Bradley S.; Levis, Robert J. // Journal of Chemical Physics;7/22/2000, Vol. 113 Issue 4 

    The effect of molecular structure and orientation on the rate of tunnel ionization in intense laser fields is considered for linear molecules. The nonspherical nature of the molecular electrostatic potential near the classical electron turning point results in a nonisotropic distribution of...

  • Ionization potentials and partition functions of ions in a semiclassical model. Shpatakovskaya, G. // JETP Letters;Aug2007, Vol. 86 Issue 1, p9 

    The characteristics of an isolated ion (its radius, energy, ionization potential, bound-state energy, and excitation spectrum), which appear in the chemical plasma model, are calculated via the Thomas-Fermi statistical model. The expression for the partition function of the ion excitation at a...

  • Effect of molecular orientation on electron impact ionization and fragmentation. Aitken, Craig G.; Blunt, David A.; Harland, Peter W. // Journal of Chemical Physics;12/15/1994, Vol. 101 Issue 12, p11074 

    Relative ionization cross sections have been determined for the production of the molecular ion CH3Cl+ and the fragmentation product CH+3 from the 200 eV electron impact ionization of spatially oriented CH3Cl molecules in a cross beam experiment. The ionization cross section for CH3Cl+ formation...

  • Experimental and theoretical characterization of the S1–S0 transition of benzo[a]pyrene. Gittins, Christopher M.; Rohlfing, Eric A.; Rohlfing, Celeste M. // Journal of Chemical Physics;11/1/1996, Vol. 105 Issue 17, p7323 

    We use fluorescence excitation and two-color resonance-enhanced multiphoton ionization (REMPI) spectroscopy to characterize the S1–S0 transition of benzo[a]pyrene, B[a]P. In addition, two-color REMPI with a tunable ionization laser provides an improved measurement of the molecular...

  • The ionization potentials of F2: A comparison of multiconfigurational electron propagator (MCEP) with other large scale methods using the same basis set. Golab, Joseph T.; Thies, Brenda S.; Yeager, Danny L.; Nichols, Jeffrey A. // Journal of Chemical Physics;1/1/1986, Vol. 84 Issue 1, p284 

    The multiconfigurational electron propagator technique (MCEP) gives reliable vertical ionization potentials (I.P.s) and electron affinities (E.A.s) for atoms and molecules, including open-shell and highly correlated systems. Shake-up and inner-valence I.P.s can be accurately obtained and...

  • Rotationally resolved photoelectron spectra in resonance enhanced multiphoton ionization of HCl via the F 1Δ2 Rydberg state. Wang, Kwanghsi; McKoy, V. // Journal of Chemical Physics;12/15/1991, Vol. 95 Issue 12, p8718 

    Results of studies of rotational ion distributions in the X 2Π3/2 and X 2Π1/2 spin-orbit states of HCl+ resulting from (2+1’) resonance enhanced multiphoton ionization (REMPI) via the S(0) branch of the F 1Δ2 Rydberg state are reported and compared with measured...


Read the Article


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

Try another library?
Sign out of this library

Other Topics