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超热电子与金黑腔靶作用产生硬X射线的蒙特卡罗模拟
Monte Carlo simulation of hard X-ray produced by suprathermal electrons interaction with golden hohlraum targets
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摘要: 激光打靶产生大量麦氏分布的超热电子，与金腔靶相互作用产生硬X射线．利用蒙特卡罗方法，埘超热电子在金腔靶中的传输进行了研究，模拟了在不同超热电子温度、份额下硬X射线谱的变化及在不同腔体尺寸、腔壁厚度情况下，硬X射线谱的变化情况，给出硬X射线产生效率的决定因素．利用硬X射线谱反推得到的超热电子信息与蒙特卡罗程序模拟结果相结合的方法，获得金腔内部超热电子初始信息．Abstract: The interaction between laser and hohlraum can generate a large number of suprathermal electrons which obey the Maxwell distribution. The transport properties of the hot electrons and the suprathermal electrons in the hohlraum are investigated by using the Monte Carlo simulation program. In this paper we give the variations of hard X-ray spectrum with hot electrons and suprathermal electrons temperature and fraction, hohlraum size, and hohlraum thickness, and the determinant of efficiency of hard X-ray is obtained. The combination of Monte Carlo program and hot electrons induced by hard X-ray demonstrates the accuracy of the initial hot electrons.
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