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On the generation of magnetic fields due to ponderomotive forces in astrophysical plasmas

Published online by Cambridge University Press:  17 June 2002

A. ROY CHOWDHURY ,
M. KHURSHED ALAM ,
K. ROY CHOWDHURY ,
S. N. PAUL  and
B. A. BEGUM
A. ROY CHOWDHURY
Affiliation:
High Energy Physics Division, Department of Physics, Jadavpur University, Calcutta, India
M. KHURSHED ALAM
Affiliation:
Bangladesh Atomic Energy Commission, PO Box 3787, Dhaka, Bangladesh
K. ROY CHOWDHURY
Affiliation:
Department of Physics, J. C. C. College, Calcutta 700032, India
S. N. PAUL
Affiliation:
Serampore Girl's College, Serampore, Hooghly, West Bengal, India
B. A. BEGUM
Affiliation:
Bangladesh Atomic Energy Commission, PO Box 3787, Dhaka, Bangladesh
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Abstract

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The generation of magnetic fields due to ponderomotive forces in astrophysical plasma consisting of electrons, ions and positrons is investigated theoretically. It is seen that collisional or non-collisional interactions (between electromagnetic waves and plasma particles) via ponderomotive forces in an inhomogeneous plasma can excite a magnetic field. The growth rate of the magnetic field is illustrated graphically for different values of the temperature and concentration of positrons in the plasma.

Type
Research Article
Information
Journal of Plasma Physics , Volume 67 , Issue 2-3 , April 2002 , pp. 129 - 138
Copyright
2002 Cambridge University Press