Proton spectra from ultraintense laser-plasma interaction with thin foils: Experiments, theory, and simulation
Proton spectra from ultraintense laser-plasma interaction with thin foils: Experiments, theory, and simulation
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DOI：
10.1063/1.1592154
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发表时间：
2003-08-01
影响因子：
2.2
通讯作者：
Roth, M
中科院分区：
文献类型：
--
作者：
Allen, M;Sentoku, Y;Roth, M
从强度高达5 × 10（19）W/cm（2）的辐照靶中观察到高能离子和质子束。最大质子能量与靶上的激光辐照度密切相关。磁谱仪的能谱显示出在最大能量截止附近的平台区域和在截止能量的约65%处的谱中的调制。提出的二维粒子模拟表明，质子光谱的调制是由多个重离子物种在膨胀等离子体中的存在所引起的。(C)2003年，美国物理学会。
A beam of high energy ions and protons is observed from targets irradiated with intensities up to 5 X 10(19) W/cm(2). Maximum proton energy is shown to strongly correlate with laser-irradiance on target. Energy spectra from a magnetic spectrometer show a plateau region near the maximum energy cutoff and modulations in the spectrum at approximately 65% of the cutoff energy. Presented two-dimensional particle-in-cell simulations suggest that modulations in the proton spectrum are caused by the presence of multiple heavy-ion species in the expanding plasma. (C) 2003 American Institute of Physics.