| Autor: |
Ekanayake N; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Luo S; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Grugan PD; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Crosby WB; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Camilo AD; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., McCowan CV; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Scalzi R; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Tramontozzi A; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Howard LE; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Wells SJ; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Mancuso C; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Stanev T; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Decamp MF; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA., Walker BC; Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA. |
| Abstrakt: |
We investigate forward scattering of ionization from neon, argon, and xenon in ultrahigh intensities of 2 × 10(19) W/cm(2). Comparisons between the gases reveal the energy of the outgoing photoelectron determines its momentum, which can be scattered as far forward as 45° from the laser wave vector k(laser) for energies greater than 1 MeV. The shell structure in the atom manifests itself as modulations in the photoelectron yield and the width of the angular distributions. We arrive at an agreement with theory by using an independent electron model for the atom, a dipole approximation for the bound state interaction, and a relativistic, three-dimensional, classical radiation field including the laser magnetic field. The studies provide the atomic physics within plasmas, radiation, and particle acceleration in ultrastrong fields. |
