| ATOMIC AND MOLECULAR PHYSICS |
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Investigation of Linear Tetra-Atomic Negative Ion by Photodetached-Electron Spectra |
| A. Rahman1, Iftikhar Ahmad1,2**, A. Afaq3, M. Haneef1, H. J. Zhao4
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1Department of Physics, Hazara University, Mansehra, Pakistan
2Department of Physics, University of Malakand, Chakdara, Pakistan
3Centre of Excellence in Solid State Physics, University of the Punjab, Quid-e-Azam Campus, Lahore-54590, Pakistan
4School of Physics and Information Science, Shanxi Normal University, Linfen 041004
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| Cite this article: |
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A. Rahman, Iftikhar Ahmad, A. Afaq et al 2011 Chin. Phys. Lett. 28 083301 |
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Abstract Photodetachment spectra from a linear tetra-atomic negative ion is investigated by treating the detached-electron wave function quantum mechanically. A plane polarized laser light, perpendicular to the axis of the ion, is used to detach the electron from the ion. Analytical expressions for the electron flux and total photodetachment cross section are derived. The electron flux on screen shows strong-energy-dependent oscillations with different frequencies. The total cross section of the tetra-atomic negative ion reduces the cross section of mono-atomic, diatomic and triatomic negative ions for high energy photons, while for low energy photons it becomes four times the cross section of mono-atomic negative ions.
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| Keywords:
33.80.-b
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Received: 09 May 2011
Published: 28 July 2011
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| PACS: |
33.80.-b
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(Photon interactions with molecules)
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