Open AccessEffect of plasma density gradients on generation of terahertz radiation in magnetized plasma column during relaxation of kiloampere REB inside it
Author(s) -
А. В. Аржанников,
V. V. Annenkov,
И. А. Иванов,
P. V. Kalinin,
A. A. Kasatov,
Sergei A. Kuznetsov,
K. N. Kuklin,
М. А. Макаров,
K. I. Mekler,
Сергей Сергеевич Попов,
A. F. Rovenskikh,
Denis A. Samtsov,
Е. S. Sandalov,
S. L. Sinitsky,
V. D. Stepanov,
И. В. Тимофеев,
E. P. Volchok
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1647/1/012010
Subject(s) - terahertz radiation , plasma , radiation , microsecond , physics , atomic physics , relativistic electron beam , instability , electron density , electron , optics , cathode ray , nuclear physics , mechanics
Generation of terahertz radiation in the magnetized plasma column due to the two-stream instability developing in the relativistic electron beam (REB) with a current of 10 kA is studied at the GOL-PET facility. In the first series of the experiments, at the regular transverse plasma density gradients, power of the generated terahertz radiation increased thirty times. At a frequency of the upper-hybrid oscillations (0.2–0.3 THz) and pulse duration of few microseconds, it reached 4 MWs. In the next experiments, when the additional longitudinal density gradients were created in plasma, the radiation power exceeded 10 MWs. These results are described in this paper.