Resonance absorption of radiation field by an intense relativistic electron beam in inverse cyclotron maser geometry

1988 ◽  
Vol 52 (9) ◽  
pp. 757-759 ◽  
Author(s):  
Sunao Kawasaki ◽  
Kei‐ichi Kamada ◽  
Masaru Masuzaki ◽  
Hiroshi Takuma
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Radiation Field ◽  
Relativistic Electron Beam ◽  
Resonance Absorption ◽  
Cyclotron Maser

Electron cyclotron masing and the force due to net stimulated bremsstrahlung in an electron cyclotron maser using a dilute non-relativistic electron beam

1988 ◽  
Vol 39 (2) ◽  
pp. 229-239 ◽  
Author(s):  
S. H. Kim
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Electromagnetic Wave ◽  
Relativistic Electron ◽  
Uniform Magnetic Field ◽  
Relativistic Electron Beam ◽  
Ponderomotive Force ◽  
Electron Cyclotron ◽  
Stimulated Emission ◽  
Cyclotron Maser

The amplification of an electromagnetic wave by net stimulated bremsstrahlung (the emission by stimulated bremsstrahlung minus the absorption by inverse bremsstrahlung) injected into a non-relativistic dilute electron beam travelling in a uniform magnetic field is considered. The d.c. ponderomotive force by net stimulated emission is calculated by using quantum kinetics. From the calculated ponderomotive force, the amplification of the intensity of the electromagnetic wave by the net stimulated bremsstrahlung is derived as a function of the relevant parameters of the electromagnetic wave and the electron beam. It is found that masing is possible when the perpendicular temperature of the electron beam is greater than its parallel temperature. It is shown that the efficiency of a practical gyrotron cannot be explained by the phase-bunching concept, and that simulated bremsstrahlung has nothing to do with any phase bunching.

scholarly journals Stopping of a relativistic electron beam in a plasma irradiated by an intense laser field

2014 ◽  
Vol 32 (1) ◽  
pp. 157-169 ◽  
Author(s):  
H.B. Nersisyan ◽  
C. Deutsch
Keyword(s):  
Electron Beam ◽  
Energy Loss ◽  
Relativistic Electron ◽  
Radiation Field ◽  
Relativistic Electron Beam ◽  
Intense Laser ◽  
Power Of The Test ◽  
Test Electron ◽  
Direction Of Polarization ◽  
Underdense Plasma

AbstractThe effects of a radiation field (RF) on the interaction process of a relativistic electron beam (REB) with an electron plasma are investigated. The stopping power of the test electron averaged with a period of the RF has been calculated assuming an underdense plasma, ω0 > ωp, where ω0is the frequency of the RF and ωpis the plasma frequency. In order to highlight the effect of the radiation field we present a comparison of our analytical and numerical results obtained for nonzero RF with those for vanishing RF. In particular, it has been shown that the weak RF increases the mean energy loss for small angles between the velocity of the REB and the direction of polarization of the RF while decreasing it at large angles. Furthermore, the relative deviation of the energy loss from the field-free value is strongly reduced with increasing the beam energy. Special case of the parallel orientation of the polarization of the RF with respect to the beam velocity has been also considered. At high-intensities of the RF two extreme regimes have been distinguished when the excited harmonics cancel effectively each other reducing strongly the energy loss or increasing it due to the constructive interference. Moreover, it has been demonstrated that the energy loss of the ultrarelativistic electron beam increases systematically with the intensity of the RF exceeding essentially the field-free value.

Incubation Rate of Zooplankton Egg after Irradiation of Pulsed Intense Relativistic Electron Beam

2015 ◽  
Vol 135 (6) ◽  
pp. 355-356 ◽  
Author(s):  
Takahiro Kazetoh ◽  
Kazumasa Takahashi ◽  
Toru Sasaki ◽  
Takashi Kikuchi ◽  
Nob. Harada ◽  
...  
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam

Pulse Shaping a High-Current Relativistic Electron Beam in Vacuum

1990 ◽  
Author(s):  
J. D. Miller ◽  
R. F. Schneider ◽  
H. S. Uhm ◽  
K. T. Nguyen ◽  
K. W. Struve
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Pulse Shaping ◽  
High Current

scholarly journals Coherent radiation from an intense relativistic electron beam rotating in a background plasma

1978 ◽  
Vol 32 (2) ◽  
pp. 88-90 ◽  
Author(s):  
V. Granatstein ◽  
C. Roberson ◽  
G. Benford ◽  
D. Tzach ◽  
S. Robertson
Keyword(s):  
Electron Beam ◽  
Relativistic Electron ◽  
Relativistic Electron Beam ◽  
Coherent Radiation ◽  
Background Plasma
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