Determination of the dynamic characteristics of aerogels in the energy-release zone of a high-power electron beam

Autor:	Vladimir E. Fortov, V. A. Petrov, V. P. Efremov, B. A. Demidov, I. A. Ivonin, M. V. Ivkin
Rok vydání:	1998
Předmět:	Nonlinear system Equation of state Materials science Fractal Physics and Astronomy (miscellaneous) Condensed Matter::Other Physics::Instrumentation and Detectors Cathode ray Composite material Porosity Space charge Energy (signal processing) Power (physics)
Zdroj:	Technical Physics. 43:1239-1246
ISSN:	1090-6525 1063-7842
DOI:	10.1134/1.1259162
Popis:	The dynamics of the interaction of a high-current electron beam with SiO2 aerogels of different density and porosity are investigated by optical methods. A model for describing highly porous materials is developed on the basis of the information obtained regarding the unloading of aerogels in the energy-release zone of an electron beam, as well as the measured energy-release profiles. A corresponding nonlinear self-consistent equation of state is obtained which reflects the fractal properties of aerogels and permits determination of the thermodynamic characteristics of aerogels as the porosity varies tens of times. The influence of electric space charge on the energy-absorption profile of a high-power electron beam in aerogels of different density is discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d3cac92867af45f320ce991ca2c60920 https://doi.org/10.1134/1.1259162 Zobrazit plný text záznamu Plný text ve formátu PDF