Time-dependent subsonic ablation pressure scalings for soft X-ray heated low- and intermediate-Z materials at drive temperatures of up to 400 eV

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS High Energy Density Physics Pub Date : 2022-09-01 DOI:10.1016/j.hedp.2022.100995

William Trickey, Jamie Walsh, John Pasley

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引用次数: 1

Abstract

The soft X-ray driven subsonic ablation of five different materials with atomic numbers ranging from 3.5 to 22 is investigated for radiation drive temperatures of up to 400 eV. Simulations were performed using the one-dimensional radiation hydrodynamics simulation code HYADES. For each material, ablation pressure scaling-laws are determined as a function of drive radiation-temperature and time, assuming that the irradiation lasts for a period of a few nanoseconds and that the drive temperature remains constant during this period. For all the materials, the maximum drive-temperature for subsonic operation is identified. As expected, lower-Z materials demonstrate a stronger scaling of ablation pressure with radiation temperature and a more gradual fall off with time. However, the lowest-Z materials transition to trans- and super-sonic ablation at temperatures of only a few hundred eV.

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在高达400 eV的驱动温度下，软x射线加热低z和中z材料的时间相关亚音速烧蚀压力刻度

在高达400 eV的辐射驱动温度下，研究了5种原子序数在3.5 ~ 22之间的不同材料的软x射线驱动亚音速烧蚀。利用一维辐射流体力学模拟程序HYADES进行了模拟。对于每种材料，假设辐照持续几纳秒，且在此期间驱动温度保持恒定，烧蚀压力标度规律被确定为驱动辐射温度和时间的函数。对于所有材料，确定了亚音速操作的最高驱动温度。正如预期的那样，低z材料表现出更强的烧蚀压力随辐射温度的标度变化，并且随着时间的推移逐渐下降。然而，最低z的材料在几百eV的温度下转变为跨声速和超音速烧蚀。

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来源期刊

High Energy Density Physics PHYSICS, FLUIDS & PLASMAS-

CiteScore

4.20

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： High Energy Density Physics is an international journal covering original experimental and related theoretical work studying the physics of matter and radiation under extreme conditions. ''High energy density'' is understood to be an energy density exceeding about 1011 J/m3. The editors and the publisher are committed to provide this fast-growing community with a dedicated high quality channel to distribute their original findings. Papers suitable for publication in this journal cover topics in both the warm and hot dense matter regimes, such as laboratory studies relevant to non-LTE kinetics at extreme conditions, planetary interiors, astrophysical phenomena, inertial fusion and includes studies of, for example, material properties and both stable and unstable hydrodynamics. Developments in associated theoretical areas, for example the modelling of strongly coupled, partially degenerate and relativistic plasmas, are also covered.