激波压缩液氮折射率高达29 GPa

IF 1.2 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

High Pressure Research Pub Date : 2023-01-02 DOI:10.1080/08957959.2023.2194022

Muhammad Sabeeh Akram, Zhuo-Ning Fan, Fu-sheng Liu

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引用次数: 0

摘要

摘要我们报道了用两级轻气枪在高达29的压力下冲击压缩液氮（LN2）的状态方程和光学性质 GPa。激光测速测量用于研究作为密度函数的冲击LN2的透明度和折射率。密度随着压力和温度的升高而增加（13-25 GPa），折射率增加到LN2的预发射折射率的27%。显然，这种极端条件对分子没有重大影响，直到25岁时都没有观察到这种离解 GPa。极化率略有下降，因此支持完整的双原子分子氮的存在。29 GPa，震惊的LN2离解，表明它可能变成了一种高反射流体。总之，这些实验表明了密度如何在化学键没有任何变化的情况下影响折射率，并分配了温度驱动离解发生的条件。

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Refractive index of shock-compressed liquid nitrogen up to 29 GPa

ABSTRACT We report the equation of state and optical properties of shock-compressed liquid nitrogen (LN2) by using a two-stage light-gas gun at pressure up to 29 GPa. Laser velocimetry measurements were used to investigate the transparency and refractive index of shocked LN2 as a function of density. As the density increased with increasing pressure and temperature (13–25 GPa), the refractive index increased up to 27% of pre-shot index of LN2. Evidently, such extreme conditions had no major influence on molecules, and no such dissociation was observed up to 25 GPa. The polarizability slightly decreased and thus supported the existence of intact diatomic molecular nitrogen. At 29 GPa, shocked LN2 dissociated, showing that it probably changed to a highly reflecting fluid. Altogether, these experiments showed how the density affects the refractive index without any change in chemical bonding and allocates the condition at which the temperature-driven dissociation takes place.

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来源期刊

High Pressure Research 物理-物理：综合

CiteScore

3.80

自引率

5.00%

发文量

审稿时长

2 months

期刊介绍： High Pressure Research is the leading journal for research in high pressure science and technology. The journal publishes original full-length papers and short research reports of new developments, as well as timely review articles. It provides an important forum for the presentation of experimental and theoretical advances in high pressure science in subjects such as: condensed matter physics and chemistry geophysics and planetary physics synthesis of new materials chemical kinetics under high pressure industrial applications shockwaves in condensed matter instrumentation and techniques the application of pressure to food / biomaterials Theoretical papers of exceptionally high quality are also accepted.