Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasma

In this study, waves instability in free electron laser with background plasma, under the influence of self-electric and self-magnetic fields, are analyzed. A dispersion relation in the Raman regime for free electron laser with a helical wiggler magnetic field and an axial magnetic field derived in...

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Main Authors: T Mohsenpour, M Akbari Alashti
Format: Article
Language:English
Published: Isfahan University of Technology 2018-09-01
Series:Iranian Journal of Physics Research
Subjects:
Online Access:http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1847-1&slc_lang=en&sid=1
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author T Mohsenpour
M Akbari Alashti
author_facet T Mohsenpour
M Akbari Alashti
author_sort T Mohsenpour
collection DOAJ
description In this study, waves instability in free electron laser with background plasma, under the influence of self-electric and self-magnetic fields, are analyzed. A dispersion relation in the Raman regime for free electron laser with a helical wiggler magnetic field and an axial magnetic field derived in which all possible wave modes can have unstable couplings with each other. This dispersion relation is solved numerically to investigate the influence of self-fields on unstable couplings. It was found that self-fields reduce the growth rate of the group I orbits and increase it in the group II orbits.
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spelling doaj.art-d929d17b5f8d49fa99fd6b8a7916bd392022-12-21T17:45:22ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572345-36642018-09-01182301311Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasmaT Mohsenpour0M Akbari Alashti1 Department of Physics, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran Department of Physics, Faculty of Basic Sciences, University of Mazandaran, Babolsar, Iran In this study, waves instability in free electron laser with background plasma, under the influence of self-electric and self-magnetic fields, are analyzed. A dispersion relation in the Raman regime for free electron laser with a helical wiggler magnetic field and an axial magnetic field derived in which all possible wave modes can have unstable couplings with each other. This dispersion relation is solved numerically to investigate the influence of self-fields on unstable couplings. It was found that self-fields reduce the growth rate of the group I orbits and increase it in the group II orbits.http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1847-1&slc_lang=en&sid=1free electron laser background plasma helical wiggler instability coupling
spellingShingle T Mohsenpour
M Akbari Alashti
Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasma
Iranian Journal of Physics Research
free electron laser
background plasma
helical wiggler
instability
coupling
title Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasma
title_full Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasma
title_fullStr Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasma
title_full_unstemmed Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasma
title_short Influence of self-electric and self-magnetic fields on coupling of waves in free electron laser with background plasma
title_sort influence of self electric and self magnetic fields on coupling of waves in free electron laser with background plasma
topic free electron laser
background plasma
helical wiggler
instability
coupling
url http://ijpr.iut.ac.ir/browse.php?a_code=A-10-1847-1&slc_lang=en&sid=1
work_keys_str_mv AT tmohsenpour influenceofselfelectricandselfmagneticfieldsoncouplingofwavesinfreeelectronlaserwithbackgroundplasma
AT makbarialashti influenceofselfelectricandselfmagneticfieldsoncouplingofwavesinfreeelectronlaserwithbackgroundplasma