Non-linear electrostatic waves in pair-ion plasmas - National Centre ...
Non-linear electrostatic waves in pair-ion plasmas - National Centre ...
Non-linear electrostatic waves in pair-ion plasmas - National Centre ...
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Product<strong>ion</strong> of <strong>pair</strong>-<strong>ion</strong> (fullerene) Plasmas (contd.)Reg<strong>ion</strong> II: Electrons and <strong>ion</strong>s are rapidly separated by a magnetic filter<strong>in</strong>g+−effect and only and are expected to exist <strong>in</strong> midmost of the cyl<strong>in</strong>der.C 60C 60Charge particle gyroradii ~(mass) 1/2 /charge+C 60−C 60(for same thermal velocity <strong>in</strong> theperpendicular direct<strong>ion</strong> of B)Reg<strong>ion</strong> III: Electron free <strong>pair</strong>-<strong>ion</strong> ( , ) plasma generated is atta<strong>in</strong>ed hereand plasma parameters are measured by Langmuir probes.The typical values of <strong>pair</strong>-<strong>ion</strong> plasma density ~ 2x10 8 cm -3 at E e=100eVThe temperature of the positively and negatively charged fullerene <strong>ion</strong>s lies <strong>in</strong>the range 0.3-0.5 eV.[W. Oohara, Y. Kuwabara and R. Hatakeyama, PRE 75, 056403 (2007)]The temperature of positive <strong>ion</strong>s is found to be different from negativefullerene <strong>ion</strong>s because the charg<strong>in</strong>g processes are quite different for boththe plasma species.10