Electron impact ionization of Methane at intermediate energy

POSTER

Abstract

We have investigated the triple differential cross sections (TDCSs) for the electron impact ionization of the 1t$_{\mathrm{1}}$ state of molecular CH$_{\mathrm{4}}$ at 250 eV for asymmetric coplanar geometry with the scattering angles of 10$^{\mathrm{o}}$, 20$^{\mathrm{o}}$, and 25$^{\mathrm{o}}$ at fixed ejected energies 30 eV and 50 eV. The experimental measurement are compared to molecular 3-boday distorted wave (M3DW), where the theory used two different calculations by using proper average (M3DW-PA) and orientation averaged molecular orbital (M3DW-OAMO) approximation. The theory predicts the shape and the structure of cross section for experiment. Overall, the M3DW-PA show better shape agreement with experiment more than OAMO calculations.

*This work was supported by NSF

Authors

  • Esam Ali

    • Missouri Univ of Sci & Tech

  • Zehra Ozer

    • Department of Physics, e-COL Laboratory, Afyon Kocatepe University, 03200, Afyon, Turkey

  • Chuangang Ning

    • Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
    • Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    • Department of Physics, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China

  • James Colgan

    • Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
    • Los Alamos National Laboratory

  • Mevlut Dogan

    • Department of Physics, e-COL Laboratory, Afyon Kocatepe University, 03200, Afyon, Turkey

  • D H Madison

    • Missouri Univ of Sci & Tech
    • Missouri University of S&T, Rolla, Mo 65409
    • Missouri University of Science and Technology