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arXiv 1710.09855physics.plasm-ph
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近临界密度等离子体产生的超有质动力电子对laser离子加速的增强作用

Enhanced laser-driven ion acceleration by superponderomotive electrons generated from near-critical-density plasma

J. H. Bin, M. Yeung, Z. Gong, H. Y. Wang, C. Kreuzer, M. L. Zhou, M. J. V. Streeter, P. S. Foster, S. Cousens, B. Dromey, J. Meyer-ter-Vehn, M. Zepf, J. Schreiber

摘要:

报道了激光驱动双层靶加速离子的实验研究,双层靶是在纳米级薄类金刚石碳膜的前面覆盖一层厚度为几微米的近临界密度靶。在相对论激光脉冲作用于线偏振双层靶时,质子最大能量从12 MeV显著提高到30 MeV。我们将增强的加速度归因于超有质动力电子,这些电子在实验中同时测量,其能量远远超出自由电子有质动力极限。我们的解释是支持二维模拟结果。

英文摘要:

We report on the experimental studies of laser driven ion acceleration from double-layer target where a near-critical density target with a few-micron thickness is coated in front of a nanometer thin diamond-like carbon foil. A significant enhancement of proton maximum energies from 12 to ~30 MeV is observed when relativistic laser pulse impinge on the double-layer target under linear polarization. We attributed the enhanced acceleration to superponderomotive electrons that were simultaneously measured in the experiments with energies far beyond the free-electron ponderomotive limit. Our interpretation is supported by two-dimensional simulation results.

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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