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基于光导开关的重复频率闪光X光机
Repetitive rate flash X-ray generator with photo conductive semiconductor switches
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摘要: 采用砷化镓光导开关和Blumlein 型脉冲形成网络以级联的拓扑形式构建平顶输出功率源，驱动工业 X 光二极管产生 X 射线。提出了一种轮辐状金属-陶瓷沿面阴极，并与普通金属阴极工业 X 光二极管重复频率实验结果进行比较。研究表明：受限于阴极重复频率下的电流发射能力，普通金属阴极工业 X 光二极管难以实现1 kHz 重复频率，采用新型阴极二极管实现了1 kHz 重复频率2猝发脉冲 X 光输出，这两个脉冲的二极管功率、X 射线信号基本一致。
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关键词:
- 闪光X光机 /
- 光导开关 /
- 级联Blumlein型脉冲形成网络 /
- X光二极管 /
- 重复频率
Abstract: A repetitive rate flash X-ray generator was developed recently to meet the demands in scientific research and in-dustrial area.A repetitive pulsed power supply was fabricated with GaAs photo conductive semiconductor switches and stacked Blumlein pulse forming networks to drive industrial X-ray diode,and a novel X-ray diode was proposed with spoked metal ceramic flashover cathode.The results show that 2 pulse burst X rays were generated under 1 kHz frame rate with novel cathode,and the two power pulses of diode and X-ray signals were identical. -
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