Ejected-Electron Angular Distribution in Multi-Photon Ionization of Atomic Hydrogen by Ultrashort High-Intensity Laser Pulses

DSpace/Manakin Repository

Show simple item record

dc.contributor.author Abeln, Brant
dc.contributor.author Weflen, Daniel
dc.contributor.author Grum-Grzhimailo, Alexei
dc.date.accessioned 2009-04-21T14:19:17Z
dc.date.available 2009-04-21T14:19:17Z
dc.date.issued 2009-04-21T14:19:17Z
dc.identifier.uri http://hdl.handle.net/2092/896
dc.description Advisor: Klaus Bartschat en_US
dc.description.abstract We have studied the multi-photon ionization of atomic hydrogen by an intense attosecond laser pulse. We numerically integrate the time-dependent Schrodinger equation by propagating the initial H(1s) state after the onset of the laser pulse using the Crank-Nicolson algorithm. When the pulse is over, we extract the angular distribution of the ejected electrons from the time-propagated wavefunction. For few-cycle 800 nm laser pulses of peak intensities ranging between 1013 and 1015 W/cm2, the photoelectron spectrum is dominated by a set of above-threshold resonances, with the lowest resonance around 0.35 eV corresponding to the nine-photon ionization of the hydrogen atom. In contrast to the standard single-photon ionization process, where the angular distribution is a simple cos2(0) function, many more anisotropy parameters need to be accounted for to describe the ejected photo-electrons. Corresponding experiments are currently being performed in Brisbane (Australia) on hydrogen and Heidelberg (Germany) on Li. Where possible, comparison with experimental data will be made. en_US
dc.description.sponsorship Drake University, College of Arts and Sciences, Department of Physics and Astronomy ; Institute of Nuclear Physics, Moscow State University en_US
dc.language.iso en_US en_US
dc.relation.ispartofseries DUCURS 2009;11
dc.subject Photoionization en_US
dc.subject Atomic hydrogen en_US
dc.subject Laser pulses, Ultrashort en_US
dc.subject Angular distribution (Nuclear physics) en_US
dc.title Ejected-Electron Angular Distribution in Multi-Photon Ionization of Atomic Hydrogen by Ultrashort High-Intensity Laser Pulses en_US
dc.type Presentation en_US


Files in this item

This item appears in the following Collection(s)

  • DUCURS [196]
    Poster sessions and presentation from the Drake University Conference on Undergraduate Research in the Sciences held each April at Olmsted Center on the Drake campus.

Show simple item record

Search DSpace


Advanced Search

Browse

My Account