利用超薄靶提高激光加速质子的效率

IF 0.9 4区物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS

Plasma Physics Reports Pub Date : 2025-04-17 DOI:10.1134/S1063780X25602184

A. A. Bushukhin, K. V. Safronov, S. A. Gorokhov, V. A. Flegentov, D. O. Zamuraev, A. L. Shamraev, S. F. Kovaleva, N. A. Fedorov, A. V. Potapov

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引用次数: 0

摘要

本文报道了6 μm厚铝靶和100 nm厚超薄类金刚石薄膜中质子在峰值强度达5 × 1020 W/cm2的飞秒激光脉冲照射下的激光加速结果。结果表明，将靶材厚度从6 μm减小到100 nm时，最大质子能量没有明显变化，但增加了角产率和激光能量转换系数。这种效应是由于光谱低能部分的质子数增加，这反映在转换系数的两倍增加上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Increasing the Efficiency of Laser Acceleration of Protons Using Ultra-Thin Targets

The results of laser acceleration of protons from aluminum targets 6 μm thick and ultra-thin diamond-like carbon films 100 nm thick when they are irradiated with femtosecond laser pulses with a peak intensity of up to 5 × 10²⁰ W/cm² are presented. It is shown that decreasing the target thickness from 6 μm to 100 nm does not lead to a significant change in the maximum proton energies, but contributes to an increase in the angular yield and the laser energy conversion coefficient. This effect is due to an increase in the number of protons in the low-energy part of the spectra, which is reflected in a twofold increase in the conversion coefficient.

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来源期刊

Plasma Physics Reports 物理-物理：流体与等离子体

CiteScore

1.90

自引率

36.40%

发文量

104

审稿时长

4-8 weeks

期刊介绍： Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.