Electromagnetic emission by subsequent processes L→L'+S and L+L'→T

0360913 - ASÚ 2012 RIV GB eng C - Conference Paper (international conference)
Karlický, Marian - Bárta, Miroslav
Electromagnetic emission by subsequent processes L→L'+S and L+L'→T.
Advances in Plasma Astrophysics. Cambridge: Cambridge University Press, 2011 - (Bonanno, A.), s. 252-254. IAU Symposium Proceedings Series, IAU S274. ISBN 9780521197410. ISSN 1743-9213.
[Symposium of the International Astronomical Union /274./. Giardini Naxos (IT), 06.09.2010-10.09.2010]
R&D Projects: GA AV ČR(CZ) IAA300030701; GA AV ČR IAA300030804; GA ČR GA205/07/1100
Institutional research plan: CEZ:AV0Z10030501
Keywords : waves * radiation mechanisms * radio radiation
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

Using a 2.5-D electromagnetic particle-in-cell (PIC) model, very early stages of a generation of the electromagnetic emission produced by a monochromatic Langmuir wave are studied. It is found that the electromagnetic emission, which is dominant on the harmonic of the plasma frequency, starts to be generated in a very small region of k-vectors. Later on the k-vectors of this emission are scattered around a ‘circle’ (in our 2-D case), given by the relations for the L+L'→T process. Analytical analysis of two subsequent processes L→L'+S a L+L'→T confirms these results.
Permanent Link: http://hdl.handle.net/11104/0198354