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arXiv 0911.4952physics.plasm-ph
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从1 PW laser与近临界密度靶相互作用产生GeV质子

Generation of GeV protons from 1 PW laser interaction with near critical density targets

Stepan S. Bulanov, Valery Yu. Bychenkov, Vladimir Chvykov, Galina Kalinchenko, Dale William Litzenberg, Takeshi Matsuoka, Alexander G. R. Thomas, Louise Willing… 展开作者

Stepan S. Bulanov, Valery Yu. Bychenkov, Vladimir Chvykov, Galina Kalinchenko, Dale William Litzenberg, Takeshi Matsuoka, Alexander G. R. Thomas, Louise Willingale, Victor Yanovsky, Karl Krushelnick, Anatoly Maksimchuk

摘要:

超强激光脉冲通过物质的传播与在传播通道中产生强移动磁场以及沿通道轴形成细离子丝有关。在离开等离子体时,磁场使靶背面的电子移位,产生准静态电场,该准静态电场加速并准直来自灯丝的离子。二维Particle-in-Cell模拟表明,紧紧聚焦在近临界密度靶上的1 PW激光脉冲能够将质子加速到1.3 GeV的能量。在考虑激光脉冲能量损耗的情况下,建立了质子加速的标度律和最佳条件。

英文摘要:

The propagation of ultra intense laser pulses through matter is connected with the generation of strong moving magnetic fields in the propagation channel as well as the formation of a thin ion filament along the axis of the channel. Upon exiting the plasma the magnetic field displaces the electrons at the back of the target, generating a quasistatic electric field that accelerates and collimates ions from the filament. Two-dimensional Particle-in-Cell simulations show that a 1 PW laser pulse tightly focused on a near-critical density target is able to accelerate protons up to an energy of 1.3 GeV. Scaling laws and optimal conditions for proton acceleration are established considering the energy depletion of the laser pulse.

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。

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