强激光与粒子束, 2012, 24 (9): 2264, 网络出版: 2012-09-12   

行波管放大器的非线性混沌特性

Characteristic of nonlinear chaotic dynamics in a traveling wave tube amplifier
作者单位
华北电力大学 电气电子工程学院, 北京 102206
摘要
以一组非线性方程为基础,从混沌动力学角度,通过计算电子的相空间轨道和辐射场的时空分布图谱,简要分析了行波管放大器的时空混沌特性,计算了行波管输出功率的演化。计算结果表明:行波管放大器辐射场与电子束是一个非线性相互作用的耗散系统,其参数影响整个系统的行为演化,当电流和失谐量等参数变化并超过一定阈值时,系统出现时空混沌特性,输出具有连续的宽频谱性。
Abstract
On the basis of the nonlinear equations, the characteristic of nonlinear chaotic dynamics was investigated in a traveling-wave tube amplifier. The phase space of the electron orbits, the time-space distribution and the output power of the radiation field were studied numerically. The result shows the radiation field and the electron beam is a dissipative system. When the parameters such as current or detuning changes and are above a certain threshold, chaotic characteristic is appeared in the whole time and space of the system. The output power is characterized by the irregularly oscillation with the wide continuous spectrum.
参考文献

[1] Chen Yinxing, Wu Xianping. Chaos in TWT[C]//Microwave and Millimetter Wave Technology proceedings. 1998:791-794.

[2] Vasily Dronov, Matthew R Hendrey, Thomas M. Communication with a chaotic traveling wave tube microwave generator[J]. Chaos, 2004, 14(1):30-37.

[3] Piovella N, Chaix P, Shvets G, et al. Analytical theory of short-pulse free-electron laser oscillators[J]. Phys Rev E, 1995, 52(5):5470-5486.

[4] Evain C, Szwaj C, Bielawski S. Shifted feedback suppression of turbulent behavior in advection-diffusion systems[J]. Physical Review Letters, 2009, 102(13):134501.

[5] Jaroszynski D A, Oepts D, Gvander Meer A F, et al. The response of the short pulse free-electron laser oscillator to periodic perturbation of the cavity synchronism[J]. Nucl Instr and Meth, 1998, 407(1):407-412.

[6] Calderòn O G , Kimura T, Smith T I. Resonantlike phenomenon in short-pulse free-electron-laser oscillators with modulated desynchronism[J]. Phys Rev E, 2001, 65:016504.

[7] Nam S K, Kim K B, Paik E K. The stability of electron orbits due to the wiggler field amplitude in free-electron laser[J]. Nuclear Instruments and Methods, 2004, 528(1-2):56-61.

[8] Chen C, Davidson R C. Chaotic particle dynamics in free-electron lasers[J]. Phys Rev A, 1991, 43(10):5541-5554.

[9] Riyopoulos S A. Feedback-induced noise in crossed field devices[J]. IEEE Trans on Plasma Science, 1992, 20(3):360-369.

[10] Baruch L, Thomas M A, Alan B, et al. Theory of relativistic backward-wave oscillators with end reflections[J]. IEEE Trans on Plasma Science, 1992, 20(3):263-280.

[11] Marchewka C, Larsen P. Generation of chaotic radiation in a driven traveling wave tube amplifier with time-delayed feedback[J]. Physics of Plasmas, 2006, 13:013104.

[12] Doveil F, A Macor, A Aissi. Observation of Hamiltonian chaos in wave-particle interaction[J]. Celestial Mechanics and Dynamical Astronomy, 2008, 102(1-3):255-272.

[13] Schachter L, Nation J A. Slow-wave amplifiers and oscillators: a unified study[J]. Phys Rev A, 1992, 45(12):8820-8832.

[14] 郝建红,丁武.行波管放大器中场极限环和混沌行为的阈值分析[J].物理学报, 2003, 52(8):1980-1983.(Hao Jianhong, Ding Wu. Threshold analysis for the limit cycle and chaotic oscillation of the radiation field in a traveling wave tube amplifier. Acta Physica Sinica, 2003, 52(8):1980-1983)

李功铭, 郝建红. 行波管放大器的非线性混沌特性[J]. 强激光与粒子束, 2012, 24(9): 2264. Li Gongming, Hao Jianhong. Characteristic of nonlinear chaotic dynamics in a traveling wave tube amplifier[J]. High Power Laser and Particle Beams, 2012, 24(9): 2264.

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