Efficient ion acceleration and dense electron-positron plasma creation in ultra-high intensity laser-solid interactions
Efficient ion acceleration and dense electron-positron plasma creation in ultra-high intensity laser-solid interactions
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DOI：
10.1088/1367-2630/aaae61
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发表时间：
2018-03-26
影响因子：
3.3
通讯作者：
Ridgers, C. P.
中科院分区：
文献类型：
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作者：
Del Sorbo, D.;Blackman, D. R.;Ridgers, C. P.
新一代超高强度(>；10(23)W cm(-2))激光器的辐射压强可以有效地将离子加速到GeV能量。然而，非线性量子电动力学效应在这些激光脉冲与物质的相互作用中起着重要的作用。在这里，我们表明，这些效应可能导致产生非常密集的(类似于10(24)厘米(-3))对等离子体吸收激光脉冲，从而使加速离子能量和激光-离子转换效率分别降低30%-50%和50%-65%。因此，我们确定了激光-物质相互作用的区域，其中离子被有效地加速到高能，或者产生密集的双等离子体作为未来实验的指导。
The radiation pressure of next generation ultra-high intensity (>10(23) W cm(-2)) lasers could efficiently accelerate ions to GeV energies. However, nonlinear quantum-electrodynamic effects play an important role in the interaction of these laser pulses with matter. Here we show that these effects may lead to the production of an extremely dense (similar to 10(24) cm(-3)) pair-plasma which absorbs the laser pulse consequently reducing the accelerated ion energy and laser to ion conversion efficiency by up to 30%-50% and 50%-65%, respectively. Thus we identify the regimes of laser-matter interaction, where either ions are efficiently accelerated to high energy or dense pair-plasmas are produced as a guide for future experiments.