This work aims to analyse the possibility of directly driven imploding spherical targets in order to create a source of energetic particles (neutrons, protons, alphas, tritium and 3He ions) for the Laser MégaJoule facility. D3He gas-filled spherical SiO2 glass pellets, irradiated by an absorbed laser intensity of 1014 W cm−2 or 1015 W cm−2 have been considered. Depending on the absorbed laser intensity and the amount of the ablated glass layer two distinct regimes have been identified: a massive pusher and an exploding pusher. Both regimes are analysed in terms of hydrodynamics and fast particle spectra. Energetic particle time-resolved spectra are calculated and used to infer ionic temperatures and total areal densities. A parametric study has been performed by varying the shell thickness and target inner radius for both laser absorbed intensities.

中文翻译：

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直接驱动目标设计作为激光 MégaJoule 设施的高能粒子源

这项工作旨在分析直接驱动内爆球形目标的可能性，以创建高能粒子（中子、质子、α、氚和3He 离子）用于激光 MégaJoule 设施。D3He充气球形SiO2玻璃颗粒，由 10 的吸收激光强度照射14宽厘米-2或 1015宽厘米-2已考虑。根据吸收的激光强度和烧蚀玻璃层的数量，已经确定了两种不同的状态：巨大的推动者和爆炸推杆. 两种状态都根据流体动力学和快速粒子光谱进行分析。计算高能粒子时间分辨光谱并用于推断离子温度和总面密度。通过改变两种激光吸收强度的壳厚度和目标内半径来进行参数研究。