Properties of Shock and Quasi-Isentropically Compressed Krypton in the Pressure Range of up to 2700 GPa

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2024-07-15 DOI:10.1134/S0021364024601465

M. A. Mochalov, R. I. Il’kaev, S. V. Erunov, A. O. Blikov, V. A. Ogorodnikov, S. E. Elfimov, V. A. Arinin, V. A. Komrakov, M. I. Likhutov, I. P. Maksimkin, V. K. Gryaznov, I. L. Iosilevskiy, P. R. Levashov, D. V. Minakov, M. A. Paramonov

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Abstract

The density of shock-compressed liquid krypton ρ ≈ 9 g/cm³ and the temperature T ≈ 55 000 K on the main Hugoniot adiabat in the pressure range of Р ≈ 140–255 GPa have been measured with hemispherical shock wave generators. Using spherical devices, gaseous krypton has been compressed to the density ρ ≈ 20 g/cm³ by the pressure Р ≈ 2700 GPa at the temperature T ≈ 120 000 K. The experiment has been carried out at the X-ray diffraction complex RGK-B-L (Russian Federal Nuclear Center All-Russian Scientific Research Institute of Experimental Physics) consisting of BIM 234.3000 betatrons with a boundary energy of 60 MeV used in the multipulse bremsstrahlung generation regime with a multichannel optoelectronic detection system for X-ray images. The designs of the experimental devices have been described, and the thermodynamic parameters of the krypton plasma reached in these devices have been estimated. The obtained data have been analyzed and compared to previously reported data. The compression of krypton to the density ρ ≈ 20 g/cm³ by the pressure Р ≈ 2700 GPa is currently a record achievement.

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冲击和准等向压缩氪在高达 2700 GPa 压力范围内的特性

利用半球形冲击波发生器测量了压力范围为 Р ≈ 140-255 GPa 时冲击压缩液态氪的密度 ρ ≈ 9 g/cm3，以及主休戈诺绝热层上的温度 T ≈ 55 000 K。利用球形装置，气态氪被压缩至密度 ρ ≈ 20 g/cm3 ，压力 Р ≈ 2700 GPa，温度 T ≈ 120 000 K。在多脉冲轫致辐射产生系统中使用了 3000 台边界能量为 60 MeV 的贝塔射线管，并配备了用于 X 射线图像的多通道光电探测系统。对实验装置的设计进行了描述，并估算了在这些装置中达到的氪等离子体的热力学参数。对获得的数据进行了分析，并与之前报告的数据进行了比较。通过压力 Р ≈ 2700 GPa 将氪压缩到密度 ρ ≈ 20 g/cm3 是目前的一项创纪录成就。

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.