Detecting tin droplet used for EUV source
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摘要: 采用正交放置的两路CCD,基于图像采集及处理的方法,建立了极紫外光源锡液滴靶发生装置的锡液滴检测系统,可以实时监测锡液滴的运动状态及稳定性。对本实验室频率为34 kHz的锡靶发生器产生的液滴进行了锡液滴监测实验。监测结果显示,锡液滴直径约为137 m,平均间距为375 m,稳定性较好,并对水平面上横向稳定性进行了分析。Abstract: A detecting system is set up based on image processing used for EUV source. The tin target motion and stability are displayed by image capturing and processing in real time. The system is tested when tin droplet is generated by the tin generator at 34 kHz. The result reveals that tin droplet size is close to 137 m, and the distance between every two drops is about 375 m. The lateral droplet stability is analyzed which contributes to laser produced plasma EUV source.
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Key words:
- extreme ultraviolet source /
- laser plasma photosource /
- tin droplet /
- stability
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