Dynamic behavior of non diffusive transport of high density plasmoid in high temperature plasmas

为了研究弹丸的烧蚀动力学，利用体视快速照相机和集束光纤对固体氢烧蚀进行了补充观测。通过烧蚀氢丸粒在丸粒物质周围形成的丸粒等离子体团间歇地脱离丸粒烧蚀位置，并且脱离的等离子体团被输送穿过约束场。分离等离子体团在100 kHz时循环发展，在10 μs的寿命内沿与弹丸运动方向相反的方向，即向低磁场一侧非扩散地传输约15 cm。这一观察结果对弹丸烧蚀位置与有效粒子沉积轮廓之间的差异给出了合理的解释。

A complementary observation of solid hydrogen ablation has been performed by using a stereo fast camera and bundled fiber optics in order to investigate the pellet ablation dynamics. The pellet plasmoid which is formed around the pellet substance by ablating hydrogen pellet, intermittently breaks away from the pellet ablating position and the breakaway plasmoid is transported across a confinement field. The breakaway plasmoid recurrently develops at 100 kHz and it is non-diffusively transported approximately 15 cm during its 10 severalμs lifetime in the opposite direction to the pellet motion, namely, toward the low magnetic field side. This observation gives a reasonable explanation for the difference between the pellet ablation position and the effective particle deposition profile.