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    • Keywords


      Invisible oscillation; hard surface; photodetachment cross-section.

    • Abstract


      Induced effects in the photodetached electron spectra from a diatomic negative ion (H$_{2}^{-}$) near a hard surface are investigated. A $z$-polarized laser is used to knock off electrons from H$_{2}^{-}$ in the vicinity of a hard surface. Theoretical imaging method is used to derive a generalized modulation function for the total photodetachment cross-section, which describes invisible oscillation. It is found that the hard surface strongly affects the detached electron flux as well as total photodetachment cross-section. There exists strong dependence on the distance of H$_{2}^{-}$ from the hard surface and also on the separation of atomic centres of H$_{2}^{-}$. Unlike the detached electron flux, no visible oscillations are noted in the photodetachment cross-section.

    • Author Affiliations


      Muhammad Haneef1 Suneela Arif1 Jehan Akbar1 Muhammad Zahir2 Nasrullah Shah3 Kamran Abid4

      1. Lab of Atom and Quantum Interference, Department of Physics, Hazara University, Garden Campus, Mansehra, Pakistan
      2. Department of Statistics, University of Peshawar, Peshawar, Pakistan
      3. Department of Chemistry, Abdul Wali Khan University, Mardan, Pakistan
      4. Department of Electrical Engineering, College of Engineering and Emerging Technologies, University of the Punjab, Lahore, Pakistan
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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