Non-linear electrostatic waves in pair-ion plasmas - National Centre ...

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Production of pair-ion (fullerene) Plasmas (contd.)Region II: Electrons and ions are rapidly separated by a magnetic filtering+−effect and only and are expected to exist in midmost of the cylinder.C 60C 60Charge particle gyroradii ~(mass) 1/2 /charge+C 60−C 60(for same thermal velocity in theperpendicular direction of B)Region III: Electron free pair-ion ( , ) plasma generated is attained hereand plasma parameters are measured by Langmuir probes.The typical values of pair-ion plasma density ~ 2x10 8 cm -3 at E e=100eVThe temperature of the positively and negatively charged fullerene ions lies inthe range 0.3-0.5 eV.[W. Oohara, Y. Kuwabara and R. Hatakeyama, PRE 75, 056403 (2007)]The temperature of positive ions is found to be different from negativefullerene ions because the charging processes are quite different for boththe plasma species.10
Electrostatic Waves in pair-ion PlasmasW. Ohara, D. Date and H. Hatakeyama [PRL 95,175003 (2005)], firstly reportedthe electrostatic waves in paired fullerene-ion plasmas.Three types of electrostatic waves can propagate parallel to the magnetic fieldin pair-ion plasmas i.e.,2 2 2 2 γT1. Ion acoustic wave (IAW) ω = C sk , C s= (acoustic speed)m2. Intermediate frequency wave (IFW)2 2 2 23. Ion plasma wave (IPW)ω = C + ωThe IFW has the features that group velocity is negative but the phasevelocity is positive i.e., the mode resembles as a backward wave.11sk2 p
Page 1 and 2: Nonlinear electrostatic structures
Page 3 and 4: 1. Soliton‣ Soliton is a nonlinea
Page 5 and 6: Soliton in Plasmas (contd.)Linear w
Page 7 and 8: 2. Brief Introduction of pair-ion P
Page 9: Production of pair-ion (fullerene)
Page 13 and 14: Nonlinear Electrostatic Waves in Pa
Page 15 and 16: Nonlinear Electrostatic Waves in pa
Page 17 and 18: Nonlinear Electrostatic Waves in pa
Page 19 and 20: Nonlinear Electrostatic Waves in Pa
Page 21 and 22: Double Layer in Plasmas5. Double La
Page 23 and 24: Double layer in Pair-ion Plasmas (c
Page 25 and 26: Double layer in Pair-ion Plasmas (c
Page 27 and 28: 6. Dissipative shocks and solitons
Page 29 and 30: Dissipative shocks and solitons in
Page 31 and 32: Dissipative shocks and solitons in
Page 33 and 34: 7. Conclusion• Linear and nonline
Page 35: Thank You35

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