膨胀等离子体中Vlasov方程精确解的实验实现
Experimental Realization of an Exact Solution to the Vlasov Equations for an Expanding Plasma
摘要：
本文研究了超冷中性等离子体在非弹性碰撞可以忽略的情况下的膨胀。等离子体由于电子的热压力而膨胀，并且对于初始球对称高斯密度分布，膨胀是自相似的。等离子体的大小和离子动能的测量，使用荧光成像和光谱学表明，膨胀遵循的解析解的弗拉索夫方程的膨胀等离子体。
英文摘要：
We study the expansion of ultracold neutral plasmas in the regime in which inelastic collisions are negligible. The plasma expands due to the thermal pressure of the electrons, and for an initial spherically symmetric Gaussian density profle, the expansion is self-similar. Measurements of the plasma size and ion kinetic energy using fluorescence imaging and spectroscopy show that the expansion follows an analytic solution of the Vlasov equations for an adiabatically expanding plasma.
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