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) PlasmasChamberLength=260 cm,diameter=15.7 cm,B=0.3 T (solenoidcoils), gas pressure=2x10 -4 PaE e=0 - 150 eV(electron beamenergy)The product<strong>ion</strong> process of <strong>pair</strong>-<strong>ion</strong> plasma is divided <strong>in</strong>to three reg<strong>ion</strong>s:Reg<strong>ion</strong> I: Consists of electron beam reg<strong>ion</strong> and fullerene <strong>ion</strong> product<strong>ion</strong> reg<strong>ion</strong>.+Positive <strong>ion</strong>s C 60 are produced by electron impact <strong>ion</strong>izat<strong>ion</strong> and low energyelectrons are produced <strong>in</strong> connect<strong>ion</strong> with this process.−Negative <strong>ion</strong>s C 60 are produced by attachment of these low energy electronsproduced dur<strong>in</strong>g the charg<strong>in</strong>g process of positive <strong>ion</strong>s.C 260− + −+ e → C60+ e,+−242( C60)= 25×10 cm− −C60 + e → C ,−−24260σ ( C60)= 100 × 10 cmσat 100 eVat 5eV9
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