在不同大气条件下用于实验室火山闪电的气密冲击管装置

IF 2.5 Q2 Earth and Planetary Sciences
C. Springsklee, B. Scheu, Christoph Seifert, Michael Manga, C. Cimarelli, Damian Gaudin, O. Trapp, Donald Bruce Dingwell
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引用次数: 0

摘要

爆炸性火山喷发会产生放电,这种现象被称为火山闪电(VL)。对现代火山爆发的 VL 越来越多地进行了深入研究和监测,但火山活动自地球起源以来就一直很活跃。因此,研究不同大气条件下的 VL 与研究早期大气化学和潜在的前生物反应息息相关。我们开发了一种实验装置来研究不同大气中的 VL。我们首次展示了在不同大气条件下,实验室对充满粒子的射流进行的放电实验。新的实验装置是一个向气密粒子收集罐喷发的移动式碎裂弹。这种装置可以测试不同的大气条件、射流载气的变化、罐内压力的变化、射流行为的监测以及大气和减压固体材料的取样。我们发现,在 CO2-CO 和空气环境中,近喷口放电事件的数量和规模相似。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
gas-tight shock tube apparatus for laboratory volcanic lightning under varying atmospheric conditions
Explosive volcanic eruptions generate electrical discharges, a phenomenon termed volcanic lightning (VL). VL is increasingly well-investigated and monitored for modern eruptions, however volcanism has been active since Earth’s origin. Thus, investigating VL under different atmospheric conditions is relevant for studies of early atmospheric chemistry and potential prebiotic reactions. We developed an experimental setup to investigate VL in varying atmospheres. We present the first experiments of laboratory discharges in particle-laden jets in varying atmospheric conditions. The new experimental setup is a mobile fragmentation bomb erupting into a gas-tight particle collector tank. This setup enables the testing of different atmospheric conditions, changes in the carrier gas of the jet, changes in the pressure within the tank, monitoring of the jet behaviour, and sampling of the atmosphere together with the decompressed solid materials. We find that the number and magnitude of near-vent electrical discharge events are similar in CO2-CO and air atmospheres.
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来源期刊
Volcanica
Volcanica Earth and Planetary Sciences-Geology
CiteScore
4.40
自引率
0.00%
发文量
21
审稿时长
21 weeks
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