Ultrashort electron pulses as a four-dimensional diagnosis of plasma dynamics.
Ultrashort electron pulses as a four-dimensional diagnosis of plasma dynamics.
复制标题
DOI：
10.1063/1.3491994
复制
发表时间：
2010-10
期刊：
影响因子：
--
通讯作者：
P. Zhu;Z. Zhang;L. Chen;R. Z. Li;J. J. Li-J.;X. Wang;J M Cao;Z. Sheng;J. Zhang
中科院分区：
文献类型：
--
作者：
P. Zhu;Z. Zhang;L. Chen;R. Z. Li;J. J. Li-J.;X. Wang;J M Cao;Z. Sheng;J. Zhang
我们报道了一个超快电子成像系统，用于在四个维度上实时检查超快等离子体动力学。它由飞秒脉冲电子枪和二维单电子探测器组成。该装置具有前所未有的能力，可以用单个超短电子脉冲获得高质量的阴影图像，从而允许使用单次方案测量不可逆过程。在中等泵浦强度下的金属靶激光诱导等离子体原型实验中，我们展示了其独特的以几皮秒的时间分辨率获得微米尺度高质量阴影图像的能力。
We report an ultrafast electron imaging system for real-time examination of ultrafast plasma dynamics in four dimensions. It consists of a femtosecond pulsed electron gun and a two-dimensional single electron detector. The device has an unprecedented capability of acquiring a high-quality shadowgraph image with a single ultrashort electron pulse, thus permitting the measurement of irreversible processes using a single-shot scheme. In a prototype experiment of laser-induced plasma of a metal target under moderate pump intensity, we demonstrated its unique capability of acquiring high-quality shadowgraph images on a micron scale with a-few-picosecond time resolution.