Accurate full-dimensionality calculations of laser-driven helium

Parker, Jonathan S.; Moore, Laura R.; Dundas, Daniel; Taylor, K. T.
July 2000
AIP Conference Proceedings;2000, Vol. 525 Issue 1, p273
Academic Journal
Recent progress on the development and exploitation of a computer code that accurately solves the Time-Dependent Schro¨dinger Equation for the laser-driven helium atom in full-dimensionality is reported. Attention is focussed on the design of Single Active Electron models, on comparison with results from the R-matrix Floquet approach and finally, on comparison with results from laboratory experiment at a laser wavelength of 390 nm. © 2000 American Institute of Physics.


Related Articles

  • Helium-3 transport experiments in the scrape-off layer with the Alcator C-Mod omegatron ion mass spectrometer. Nachtrieb, R.; LaBombard, B. // Physics of Plasmas;Nov2000, Vol. 7 Issue 11 

    [sup 3]He gas was puffed from the wall into Ohmic low confinement-mode discharges of the Alcator C-Mod [I. H. Hutchinson et al., Phys. Plasmas 1, 1551 (1994)] tokamak and the charged states were measured near the wall with the omegatron ion mass spectrometer. Analysis of the data shows that the...

  • High-lying 1P° doubly-excited states of H- and He below the N = 3—13 hydrogenic thresholds. Sakho, I. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Oct2010, Vol. 59 Issue 2, p171 

    We present in this paper autoionizing energies of the 1P° states of H- and He belonging to the N = 3–13 hydrogenic thresholds. Calculations are performed for both intershell and intrashell resonances using the screening constant by unit nuclear charge (SCUNC) method in the framework of...

  • Single and Crystalized Ions in Ultra-Intense Laser Pulses. Hatsagortsyan, Karen Z.; Jentschura, Ulrich D.; Keitel, Christoph H. // AIP Conference Proceedings;2002, Vol. 634 Issue 1, p71 

    Relativistic and quantum mechanical effects in the interaction of atomic systems with a superintense laser field are investigated. Various atomic systems are the object of attention, ranging from highly charged ions to thin crystal layers. A new regime of high-harmonic generation (HHG) based on...

  • Electron-impact ionization of helium clusters close to the threshold: Appearance energies. Denifl, S.; Stano, M.; Stamatovic, A.; Scheier, P.; Märk, T. D. // Journal of Chemical Physics;2/7/2006, Vol. 124 Issue 5, p054320 

    We have investigated the ionization threshold behavior of small helium cluster ions (cluster size n=2-10) formed via electron-impact ionization of neutral helium droplets and derive appearance energies for mass-selected cluster ions using a nonlinear least-square-fitting procedure. Moreover, we...

  • A new soft x-ray autocorrelator—direct evaluation of the temporal properties of FEL pulses at 24 nm. Mitzner, R.; Siemer, B.; Roling, S.; Wöstmann, M.; Noll, T.; Siewert, F.; Sorokin, A. A.; Richter, M.; Tiedtke, K.; Zacharias, H. // AIP Conference Proceedings;6/24/2010, Vol. 1234 Issue 1, p19 

    To provide two jitter-free soft x-ray pulses for femtosecond x-ray pump and probe experiments a split and delay unit (autocorrelator) has been constructed for the VUV—FEL in Hamburg (FLASH). Here we report experiments applying this autocorrelator to examine the average temporal properties...

  • A Remark on the Ground State Energy of Bosonic Atoms. Hogreve, H. // Journal of Statistical Physics;Aug2011, Vol. 144 Issue 4, p904 

    Monotonicity properties of the ground state energy of bosonic atoms as established in a recent paper by M.K.H. Kiessling [J. Stat. Phys. 139:1063 ()] are studied. Symmetry and scaling arguments lead to a more direct proof of a slightly stronger result of this monotonicity and the behavior of the...

  • Phase effect on flow control for dielectric barrier plasma actuators. Singh, K. P.; Roy, Subrata // Applied Physics Letters;7/3/2006, Vol. 89 Issue 1, p011501 

    Active control of flow has a wide range of applications. Specifically, mitigation of detachment due to the weakly ionized gas flow past a flat plate at an angle of attack is studied using two asymmetric sets of electrode pairs kept at a phase lag. The equations governing the dynamics of...

  • Interaction of He and Ar ions with acetylene, ethylene, and ethane molecules. Afrosimov, V.; Basalaev, A.; Morozov, Yu.; Panov, M.; Smirnov, O.; Tropp, E. // Technical Physics;May2011, Vol. 56 Issue 5, p597 

    Time-of-flight mass spectroscopy methods are employed for studying processes occurring during capture of electrons by He and Ar multiply charged ions with energy 6 z keV ( z is the ion charge) from CH molecules ( n = 2, 4, 6) with different multiplicities of C-C bonds. Fragmentation schemes of...

  • High-resolution mass spectrometric study of pure helium droplets, and droplets doped with krypton. Schöbel, H.; Bartl, P.; Leidlmair, C.; Denifl, S.; Echt, O.; Märk, T.; Scheier, P. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jul2011, Vol. 63 Issue 2, p209 

    Mass spectra of doped and undoped helium droplets are presented. The high resolution of the time-of-flight spectrometer ( m/ Δm ≅ 5000) makes it possible to fully resolve small helium cluster ions from impurities and to unambiguously identify abundance anomalies in the size...


Read the Article


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

Try another library?
Sign out of this library

Other Topics