斜入射激光等离子体堵口时空特性研究
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摘要: 在“星光II”上首次利用X光12分幅相机(XFC)成功地观测到了1.053 μm激光以45°方向斜入射孔靶和半腔靶等离子体堵口的时间和二维空间图象，获得了等离子体堵口速度，同时通过一维模型给出了斜入射条件下的等离子体堵口速度。实验结果表明：相同参数条件下半腔靶与孔靶相比，等离子体喷射速度高约15%。一维模型给出的等离子体喷射速度与XFC测出的等离子体喷射速度在实验误差范围内是一致的。Abstract: The plasma closure images of two-dimensional space and one-dimensional time for 1.053m m slanting incidence laser were observed successfully for the first time at the“XingguangII”facility with an X-ray twelve-frame camera. The plasma closure velocities under the condition of laser slanting incidence have been obtained separately by experiment and one-dimensional model. The experimental results show that under the same conditions the plasma expanding speed is 15% higher for half-cavity targets than that for hole targets.
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Key words:
- slanting incidence /
- half-cavity target /
- laser plasma /
- closure picture /
- closure speed
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