The optimum shielding around a test charge in plasmas containing two negative ions

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Moslem, W. M. and Sabry, R. and Shukla, P. K. (2011) The optimum shielding around a test charge in plasmas containing two negative ions. Journal of Plasma Physics, 77 (5). pp. 663-673. ISSN 0022-3778 (https://doi.org/10.1017/S0022377811000055)

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Abstract

This paper focuses on the progress in understanding the shielding around a test charge in the presence of ion-acoustic waves in multispecies plasmas, whose constituents are positive ions, two negative ions, and Boltzmann distributed electrons. By solving the linearized Vlasov equation with Poisson equation, the Debye–Hückel screening potential and wakefield (oscillatory) potential distribution around a test charge particle are derived. It is analytically found that both the Debye–Hückel potential and the wakefield potential are significantly modified due to the presence of two negative ions. The present results might be helpful to understand and to form new materials from plasmas containing two negative ions such as Xe+ − F− − SF−6 and Ar+ − F− − SF−6 plasmas, as well as to tackle extension of the test charge problem in multinegative ions' coagulation/agglomeration.

  • Item type:Article
    ID code:41435
    Dates:
    Date
    Event
    October 2011
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:13 Oct 2012 15:59
    Last modified:11 Nov 2024 10:14
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/41435
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