A diffusion model of chain-branching reaction of the explosive decomposition of heavy metal azides

被引：12

作者：

Kriger, V. G. ^{[1
]}

Kalenskii, A. V. ^{[1
]}

Zvekov, A. A. ^{[1
]}

Anan'eva, M. V. ^{[1
]}

Borovikova, A. P. ^{[1
]}

机构：

[1] Kemerovo State Univ, Kemerovo 650043, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B | 2009年 / 3卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

PULSE EMISSION; INITIATION;

D O I：

10.1134/S1990793109040198

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

A diffusion model of a solid-phase chain reaction of explosive decomposition of heavy metal azides was developed. The dimensional effects of initiation of the reaction were examined: the dependence of the critical fluence of initiation on the microcrystal size H(R) and on the irradiated zone diameter H(d). It was demonstrated that the diffusion model of the chain reaction closely describes the measured H(R) dependence at diffusion coefficients of D similar to 0.2-0.3 cm(2)/s, values that correspond to experimentally measured mobility of electronic charge carriers of mu similar to 10 cm(2)/(V s). To account for the measured H(d) dependence and the reaction front propagation velocity (V = 1.2 km/s), it is necessary that the diffusion coefficient be three orders of magnitude higher than the experimentally determined value. That the H(R) and H(d) dependences cannot be quantitatively described simultaneously is indicative of the underlying mechanisms of energy transfer being different.

引用

页码：636 / 640

页数：5