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

被引：0

作者：

B. A. Demidov

V. P. Efremov

M. V. Ivkin

I. A. Ivonin

V. A. Petrov

V. E. Fortov

机构：

[1] Kurchatov Institute Russian Science Center,

来源：

Technical Physics | 1998年 / 43卷

关键词：

Porosity; SiO2; Electron Beam; Fractal Property; Dynamic Characteristic;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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.

引用

页码：1239 / 1246

页数：7

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