Localized microwave-heating (LMH) of basalt – Lava, dusty-plasma, and ball-lightning ejection by a “miniature volcano”
نویسندگان
چکیده
منابع مشابه
Relativistic-microwave theory of ball lightning
Ball lightning, a fireball sometimes observed during lightnings, has remained unexplained. Here we present a comprehensive theory for the phenomenon: At the tip of a lightning stroke reaching the ground, a relativistic electron bunch can be produced, which in turn excites intense microwave radiation. The latter ionizes the local air and the radiation pressure evacuates the resulting plasma, for...
متن کاملBasalt Melting by Localized-Microwave Thermal-Runaway Instability
This paper presents an experimental and theoretical study of the thermal-runaway instability induced by localized microwaves in basalt stones. This effect leads to the inner melting of the basalt core, and further to its eruption similarly to a volcanic burst. The experiments are conducted in a single-mode cavity at 2.45 GHz, 0.9 kW. The microwave-induced miniature volcano exhibits hotspots, bu...
متن کاملMagnetically dominated plasma models of ball lightning
Recently, ball lightning models based on MHD force balance equation have been proposed. An upper bound for the magnetic energy for these models is presented. The possibility of weakly ionized plasma models is considered with estimates on lifetime and energy concent. The lifetime is found to be too short, if the electron-neutral and ion-neutral effective collision frequencies behaver in the usua...
متن کاملchemical recycling of polycarbonate waste using conventional heating and microwave assisted method
پلی کربنات یکی از پلاستیکهای مهمی است که به صورت گسترده در تولید لوحهای فشرده، قطعات رایانه، مواد ساختمانی و غیره مورد استفاده قرار می گیرد. این پلیمر بصورت عمده از تراکم مونومر بیس فنولa (bpa) و کربنیل کلرید یا دی متیل کربنات ها بدست می آید. در سالهای اخیر بازیافت شیمیایی پلی کربنات بیشتر مورد توجه بوده است. بازیافت شیمیایی پلی کربنات برای بدست آوردن مواد اولیه آن با روشهای متفاوتی مانند تجزی...
Observations of Ball-Lightning-Like Plasmoids Ejected from Silicon by Localized Microwaves
This paper presents experimental characterization of plasmoids (fireballs) obtained by directing localized microwave power (<1 kW at 2.45 GHz) onto a silicon-based substrate in a microwave cavity. The plasmoid emerges up from the hotspot created in the solid substrate into the air within the microwave cavity. The experimental diagnostics employed for the fireball characterization in this study ...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2019
ISSN: 2045-2322
DOI: 10.1038/s41598-019-49049-5