CAJ | 학술논문

拉曼型自由电子激光器作为一种兆瓦级高功率毫米波、太赫兹波辐射源,其电子的运动稳定性对整体器件的性能至关重要.本文采用科尔莫戈罗夫熵方法,以典型的麻省理工学院公布的实验数据为例,比较研究拉曼型正向导引磁场和反向导引磁场两类自由电子激光器中相对论电子的运动稳定性.结果表明:摇摆器绝热压缩磁场对电子运动的稳定性无实质性影响,但对电子运动影响大;电子束自身场在拉曼型正向导引磁场自由电子激光器中使电子运动稳定性变差,而在拉曼型反向导引磁场自由电子激光器中则可改善电子运动稳定性.
랍만형자유전자격광기작위일충조와급고공솔호미파、태혁자파복사원,기전자적운동은정성대정체기건적성능지관중요.본문채용과이막과라부적방법,이전형적마성리공학원공포적실험수거위례,비교연구랍만형정향도인자장화반향도인자장량류자유전자격광기중상대론전자적운동은정성.결과표명:요파기절열압축자장대전자운동적은정성무실질성영향,단대전자운동영향대;전자속자신장재랍만형정향도인자장자유전자격광기중사전자운동은정성변차,이재랍만형반향도인자장자유전자격광기중칙가개선전자운동은정성.
@@@@In the Raman free-electron laser as a high-power radiation source with megawatt in millimeter and terahertz wave ranges, the stability of relativistic electron motion is of importance for the performance of the device. By making use of the reported MIT experimental data and Kolmogorov entropy, comparative study is carried out on the stability of the relativistic electron motion in a Raman free-electron laser with positive/reversed guide magnetic field. Results show that the wiggler adiabatic field has trivial influence on the stability of electron motion but substantially affects the electron motion itself in both positive and reversed guide magnetic field cases;the self-field of the electron beam deteriorates the motion stability in the case of a positive guide magnetic field, but favors the motion stability in the case of a reversed guide magnetic field.