Experimental study on influence of cut current tail on xenon flashlamp work performance
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摘要: 脉冲氙灯作为固体激光器的泵浦源，是激光惯性约束聚变装置中重要的光学器件。针对脉冲氙灯的电流尾部开展了截断技术研究，实现了脉冲氙灯电流尾部的截断。研究了电流尾部截断技术对脉冲氙灯放电通道、外壁温度、冲击波产生的振动和钕玻璃荧光输出的影响。研究发现氙灯电流尾部被截断后有效地减弱了等离子体对氙灯内壁的作用，导致氙灯外壁温升降低，从而提高了氙灯寿命。而电流截断产生的冲击波对氙灯并无影响，但过多的截断会降低钕玻璃荧光输出。Abstract: As radiation sources for pumping solid state lasers, xenon flashlamp is a most important optical device in inertial confinement fusion. Experimental study on cutting current tail was carried out. The influences on discharge channel, temperature rise of the flashlamp outside surface, vibration caused by shock wave, fluorescence of neodymium glass were measured. Without the current tail, the effect of plasma on xenon flashlamp inner surface was weakened and the temperature rise of flashlamp outside surface reduced. Meanwhile, cutting more current tail had no effect on shock wave and would lower the output of neodymium fluorescence.
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Key words:
- xenon flashlamp /
- cutting current tail /
- discharge channel /
- temperature rise /
- shock wave /
- fluorescence output
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