28 June 2015 to 3 July 2015
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016

Forbidden gap regions in ion-acoustic solitons

1 Jul 2015, 11:10
20m
Oral Presentation Track D2 - Space Science Space

Speaker

Dr Shimul Kumar Maharaj (South African National Space Agency (SANSA), Space Science Directorate)

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Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Plasma models composed of one and/or two (different mass) species of inertial ions and one and/or two (different temperature) species of (inertialess) electrons (isothermal and/or non-thermal) will be considered to investigate
forbidden gap regions (stopbands) in velocity space where ion-acoustic solitons do not propagate. It has been previously found [1] that these forbidden gap regions in velocity space occur between two passband regions which support the propagation of ion-acoustic solitons. The focus of the study will be to establish which plasma models favour the existence of stopband regions but also to determine how the sizes of the stopband regions are a function of the plasma parameters.

[1] Stopbands in the existence domains of acoustic solitons, F. Nsengiyumva, M. A. Hellberg, F. Verheest and R. L. Mace. Phys. Plasmas 21 , 102301 (2014).

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Primary author

Dr Shimul Kumar Maharaj (South African National Space Agency (SANSA), Space Science Directorate)

Co-author

Prof. Ramesh Bharuthram (University of the Western Cape)

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