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Acoustic Signals Induced in a Copper Target under Irradiation by a Low-Energy High-Current Electron Beam
Russian Physics Journal ( IF 0.6 ) Pub Date : 2020-06-01 , DOI: 10.1007/s11182-020-02031-5
A. V. Solovyov , A. B. Markov , E. V. Yakovlev , O. Y. Maksimov

Results of investigations of acoustic signals induced in a copper plate irradiated with a microsecond lowenergy high-current electron beam (LEHCEB) are presented. The characteristic acoustic signal waveforms, their amplitudes, phases, and frequencies are experimentally measured. It has been established that the acoustic signals induced by LEHCEB irradiation have groups of characteristic spectral components with fundamental frequencies of 6, 11, 22–24, 80, and 100–120 kHz whose amplitudes increased with charging voltage. It has been established that from the change of the 80 kHz harmonic with the charging voltage, the beginning of LEHCEB generation, its stable or unstable phase, and the beginning of target melting can be traced. It has been found that for a fixed charging voltage of each pulse in a series, the amplitude and phase-frequency structure of acoustic signals are almost the same.

中文翻译:

低能大电流电子束辐照铜靶中的声信号

介绍了在用微秒低能量高电流电子束 (LEHCEB) 照射的铜板中感应的声学信号的调查结果。通过实验测量特征声信号波形、它们的幅度、相位和频率。已经确定由 LEHCEB 辐射引起的声信号具有基频为 6、11、22-24、80 和 100-120 kHz 的特征光谱分量组,其幅度随充电电压而增加。已经确定,从 80 kHz 谐波随充电电压的变化,可以追踪 LEHCEB 生成的开始、其稳定或不稳定阶段以及目标熔化的开始。已经发现,对于串联中每个脉冲的固定充电电压,
更新日期:2020-06-01
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