Effect of melting on the critical ignition energy of condensed explosives by a short laser pulse

被引：21
|
作者：
Khaneft, A. V. [1 ]
Duginov, E. V. [1 ]
机构：
[1] Kemerovo State Univ, Kemerovo 650043, Russia
来源：
COMBUSTION EXPLOSION AND SHOCK WAVES | 2012年 / 48卷 / 06期
关键词：
melting; ignition criterion; laser pulse; beam radius; PETN; INITIATION; RADIATION;
D O I：
10.1134/S0010508212060068
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A criterion for the initiation of explosives with a melting point below the ignition temperature by a short laser pulse is obtained. The criterion obtained is in good agreement with numerical solutions of the heat conduction equation in the cylindrical coordinate system. This criterion made it possible to explain experiments on the initiation of PETN from an open surface by a laser pulse in the range of transparency with variation in the diameter of the light beam. The calculation results coincided with the experiment at alpha = 0.065 cm(-1) and the Fresnel reflection coefficient.
引用
收藏
页码：699 / 704
页数：6
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