https://doi.org/10.1140/epjd/e2017-70535-x
Regular Article
Effects of weakly coupled and dense quantum plasmas environments on charge exchange and ionization processes in Na+ + Rb(5s) atom collisions
1 Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23 -166, 106 Taipei, Taiwan
2 Department of Physics, National Taiwan University, 106 Taipei, Taiwan
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e-mail: pandey@pub.iams.sinica.edu.tw
Received: 26 August 2016
Received in final form: 14 November 2016
Published online: 16 February 2017
The effects of weakly coupled or classical and dense quantum plasmas environment on charge exchange and ionization processes in Na+ + Rb(5s) atom collision at keV energy range have been investigated using classical trajectory Monte Carlo (CTMC) method. The interaction of three charged particles are described by the Debye-Hückel screen potential for weakly coupled plasma, whereas exponential cosine-screened Coulomb potential have been used for dense quantum plasma environment and the effects of both conditions on the cross sections are compared. It is found that screening effects on cross sections in high Debye length condition is quite small in both plasma environments. However, enhanced screening effects on cross sections are observed in dense quantum plasmas for low Debye length condition, which becomes more effective while decreasing the Debye length. Also, we have found that our calculated results for plasma-free case are comparable with the available theoretical results. These results are analyzed in light of available theoretical data with the choice of model potentials.
Key words: Plasma Physics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2017
