arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.2623hep-phphysics.plasm-ph
收藏

多重碰撞电磁脉冲:降低真空产生$e^+e^-$对的阈值的一种方法

Multiple colliding electromagnetic pulses: a way to lower the threshold of $e^+e^-$ pair production from vacuum

S. S. Bulanov, V. D. Mur, N. B. Narozhny, J. Nees, V. S. Popov

摘要:

多脉冲同时聚焦在一个光斑上的方案自然源于计划中的新激光系统的结构特征,例如ELI和HiPER。结果表明,在足够强的电磁场作用下,多脉冲结构有利于观察真空中产生$e^+e^-$对。聚焦脉冲的场使用基于麦克斯韦方程组的精确解的现实的三维模型来描述。如果不是使用一个或甚至两个碰撞脉冲,而是使用聚焦在一个点上的多个脉冲,则就电磁场能量而言的$e^+e^-$对产生阈值可以显著降低。多脉冲相互作用的几何形状引起的聚焦区域的亚波长场的功能。这些特征导致产生极短的$e^+e^-$束。

英文摘要:

The scheme of simultaneous multiple pulse focusing on one spot naturally arises from the structural features of projected new laser systems, such as ELI and HiPER. It is shown that the multiple pulse configuration is beneficial for observing $e^+e^-$ pair production from vacuum under the action of sufficiently strong electromagnetic fields. The field of the focused pulses is described using a realistic three-dimensional model based on an exact solution of the Maxwell equations. The $e^+e^-$ pair production threshold in terms of electromagnetic field energy can be substantially lowered if, instead of one or even two colliding pulses, multiple pulses focused on one spot are used. The multiple pulse interaction geometry gives rise to subwavelength field features in the focal region. These features result in the production of extremely short $e^+e^-$ bunches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑