Kassier G H, Haupt K, Erasmus N, Rohwer E G, von Bergmann H M, Schwoerer H, Coelho S M M, Auret F D
Laser Research Institute, University of Stellenbosch, Private Bag X1, 7602 Matieland, South Africa.
Rev Sci Instrum. 2010 Oct;81(10):105103. doi: 10.1063/1.3489118.
We have developed a compact streak camera suitable for measuring the duration of highly charged subrelativistic femtosecond electron bunches with an energy bandwidth in the order of 0.1%, as frequently used in ultrafast electron diffraction (UED) experiments for the investigation of ultrafast structural dynamics. The device operates in accumulation mode with 50 fs shot-to-shot timing jitter, and at a 30 keV electron energy, the full width at half maximum temporal resolution is 150 fs. Measured durations of pulses from our UED gun agree well with the predictions from the detailed charged particle trajectory simulations.
我们开发了一种紧凑型条纹相机，适用于测量高电荷亚相对论飞秒电子束的持续时间，其能量带宽约为0.1%，这在用于研究超快结构动力学的超快电子衍射（UED）实验中经常使用。该设备以累积模式运行，每次拍摄的定时抖动为50飞秒，在30 keV电子能量下，半高宽时间分辨率为150飞秒。我们的UED枪所测量的脉冲持续时间与详细的带电粒子轨迹模拟预测结果吻合良好。
