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Propagation and oblique collision of electron-acoustic solitons in two-electron-populated quantum plasmas

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Abstract

Oblique interaction of small- but finite-amplitude KdV-type electron-acoustic solitary excitations is examined in an unmagnetized two-electron-populated degenerate quantum electron–ion plasma in the framework of quantum hydrodynamics model using the extended Poincaré–Lighthill–Kuo (PLK) perturbation method. Critical plasma parameter is found to distinguish the types of solitons and their interaction phase-shifts. It is shown that, depending on the critical quantum diffraction parameter H cr, both compressive and rarefactive solitary excitations may exist in this plasma and their collision phase-shifts can be either positive or negative for the whole range of collision angles 0 < θ < π.

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Authors and Affiliations

  1. Faculty of Science, Department of Physics, Azarbaijan University of Tarbiat Moallem, 51745-406, Tabriz, Iran

    M AKBARI-MOGHANJOUGHI

  2. Islamic Azad University, Hadishahr Branch, Hadishahr, Iran

    N AHMADZADEH-KHOSROSHAHI

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  1. M AKBARI-MOGHANJOUGHI
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  2. N AHMADZADEH-KHOSROSHAHI
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Correspondence to M AKBARI-MOGHANJOUGHI.

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AKBARI-MOGHANJOUGHI, M., AHMADZADEH-KHOSROSHAHI, N. Propagation and oblique collision of electron-acoustic solitons in two-electron-populated quantum plasmas. Pramana - J Phys 77, 369–382 (2011). https://doi.org/10.1007/s12043-011-0093-4

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  • DOI: https://doi.org/10.1007/s12043-011-0093-4

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