Initiation of a reactive material by a radiation beam absorbed by optical heterogeneities of the material

Abstract

The heating dynamics and thermal ignition of a condensed transparent material by a radiation pulse absorbed by optical micro-heterogeneities present in the material were studied numerically and approximately analytically over a wide range of pulse durations. For quasistationary heating conditions of micro-heterogeneities, an analytical dependence of the radiation power density critical for ignition on the formal kinetic parameters of the chemical process and the radius of the particle absorbing the radiation was obtained. The critical energy characteristics of ignition are compared with experimental data on the initiation threshold of lead azide by laser pulses of different duration.

Original language	English
Pages (from-to)	581-590
Number of pages	10
Journal	Combustion, Explosion and Shock Waves
Volume	47
Issue number	5
DOIs	https://doi.org/10.1134/S0010508211050121
Publication status	Published - 1 Sep 2011

Keywords

Absorbing optical heterogeneities limiting parameters
Ignition energy threshold
Laser radiation
Reactive material

ASJC Scopus subject areas

Physics and Astronomy(all)
Chemical Engineering(all)
Chemistry(all)
Energy Engineering and Power Technology
Fuel Technology

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10.1134/S0010508211050121

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title = "Initiation of a reactive material by a radiation beam absorbed by optical heterogeneities of the material",

abstract = "The heating dynamics and thermal ignition of a condensed transparent material by a radiation pulse absorbed by optical micro-heterogeneities present in the material were studied numerically and approximately analytically over a wide range of pulse durations. For quasistationary heating conditions of micro-heterogeneities, an analytical dependence of the radiation power density critical for ignition on the formal kinetic parameters of the chemical process and the radius of the particle absorbing the radiation was obtained. The critical energy characteristics of ignition are compared with experimental data on the initiation threshold of lead azide by laser pulses of different duration.",

keywords = "Absorbing optical heterogeneities limiting parameters, Ignition energy threshold, Laser radiation, Reactive material",

author = "Burkina, {R. S.} and Morozova, {E. Yu} and Tsipilev, {V. P.}",

year = "2011",

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language = "English",

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pages = "581--590",

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T1 - Initiation of a reactive material by a radiation beam absorbed by optical heterogeneities of the material

AU - Burkina, R. S.

AU - Morozova, E. Yu

AU - Tsipilev, V. P.

PY - 2011/9/1

Y1 - 2011/9/1

N2 - The heating dynamics and thermal ignition of a condensed transparent material by a radiation pulse absorbed by optical micro-heterogeneities present in the material were studied numerically and approximately analytically over a wide range of pulse durations. For quasistationary heating conditions of micro-heterogeneities, an analytical dependence of the radiation power density critical for ignition on the formal kinetic parameters of the chemical process and the radius of the particle absorbing the radiation was obtained. The critical energy characteristics of ignition are compared with experimental data on the initiation threshold of lead azide by laser pulses of different duration.

AB - The heating dynamics and thermal ignition of a condensed transparent material by a radiation pulse absorbed by optical micro-heterogeneities present in the material were studied numerically and approximately analytically over a wide range of pulse durations. For quasistationary heating conditions of micro-heterogeneities, an analytical dependence of the radiation power density critical for ignition on the formal kinetic parameters of the chemical process and the radius of the particle absorbing the radiation was obtained. The critical energy characteristics of ignition are compared with experimental data on the initiation threshold of lead azide by laser pulses of different duration.

KW - Absorbing optical heterogeneities limiting parameters

KW - Ignition energy threshold

KW - Laser radiation

KW - Reactive material

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JO - Combustion, Explosion and Shock Waves

JF - Combustion, Explosion and Shock Waves

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