Radiative Jet Experiments of Astrophysical Interest Using Intense Lasers
Radiative Jet Experiments of Astrophysical Interest Using Intense Lasers
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DOI：
10.1103/physrevlett.83.1982
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发表时间：
1999-09
影响因子：
8.6
通讯作者：
D. Farley;K. Estabrook;S. Glendinning;S. Glenzer;B. Remington;K. Shigemori;J. Stone;R. Wallace;G. Zimmerman;J. Harte
中科院分区：
文献类型：
--
作者：
D. Farley;K. Estabrook;S. Glendinning;S. Glenzer;B. Remington;K. Shigemori;J. Stone;R. Wallace;G. Zimmerman;J. Harte
利用强激光照射金锥产生了具有天体物理意义的高马赫数辐射冷却喷流。喷射的演变在发射和射线照相中成像，并且用汤姆逊散射测量温度。与数值模拟结果的比较表明，辐射冷却是轴向Au等离子体射流坍缩的主要机制，温度升高，峰值密度增加，每一个都增加了一个数量级，单位为$\ensurmath {\sim}\frac{1}{2}\mathrm{ns}$。在无量纲的条件下，这种喷流的方面类似于辐射天体物理喷流。
A high Mach number, radiatively cooled jet of astrophysical interest has been produced using intense laser irradiation of a gold cone. The evolution of the jet was imaged in emission and in radiography, and the temperature was measured with Thomson scattering. Comparison with numerical simulations shows that radiative cooling is a dominant mechanism in the collapse of the Au plasma jet on axis, with temperatures plummeting and peak densities increasing, each by an order of magnitude in $\ensuremath{\sim}\frac{1}{2}\mathrm{ns}$. In dimensionless terms, aspects of this jet are similar to radiative astrophysical jets.