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Emission of radiation by particles in media with inhomogeneities and coherent bremsstrahlung

 a,  b,  c, d
a Research Institute for Laser Physics, Birzhevaya liniya 12, St. Petersburg, 199034, Russian Federation
b St. Petersburg State Polytechnical University, Politekhnicheskaya str. 29, St. Petersburg, 195251, Russian Federation
c Ioffe Institute, ul. Polytekhnicheskaya 26, St. Petersburg, 194021, Russian Federation
d New Jersey Institute of Technology, Newark, New Jersey, USA

A theoretical investigation is reported of coherent bremsstrahlung generated by a relativistic particle together with noncoherent Bethe--Heitler radiation in a medium characterized by macroscopic density inhomogeneities. These inhomogeneities may be due to the structure of the medium or due to fluctuations excited in an initially macroscopically homogeneous medium. The conditions for the observation of the coherent bremsstrahlung in various systems (plasma channel, pile of plates) are considered. The relationship between the coherent bremsstrahlung and some already known effects (inverse Compton eifect involving Langmuir oscillations and transition radiation in media with inhomogeneities) is considered.

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Fulltext is also available at DOI: 10.1070/PU1990v033n04ABEH002574
PACS: 41.60.Bq, 52.25.Os (all)
DOI: 10.1070/PU1990v033n04ABEH002574
URL: https://ufn.ru/en/articles/1990/4/b/
Citation: Platonov K Yu, Toptygin I N, Fleishman G D "Emission of radiation by particles in media with inhomogeneities and coherent bremsstrahlung" Sov. Phys. Usp. 33 (4) 289–295 (1990)
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Оригинал: Платонов К Ю, Топтыгин И Н, Флейшман Г Д «Излучение частиц в средах с неоднородностями и когерентное тормозное излучение» УФН 160 (4) 59–69 (1990); DOI: 10.3367/UFNr.0160.199004c.0059

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