The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition
The work is devoted to the development of the model describing laser initiation composite materials being an explosive matrix with metal nanoparticles covered with oxide shell. The model considers the oxide shell as a dielectric that does not absorb light. The example of aluminum nanoparticles cove...
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| Format: | Article |
| Language: | English |
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Academician Ye.A. Buketov Karaganda University
2024-12-01
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| Series: | Қарағанды университетінің хабаршысы. Физика сериясы |
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| Online Access: | https://phs.buketov.edu.kz/index.php/physics-vestnik/article/view/749 |
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| author | А.В. Каленский А.А. Звеков А.П. Боровикова Е.В. Галкина П.О. Винодиктов |
| author_facet | А.В. Каленский А.А. Звеков А.П. Боровикова Е.В. Галкина П.О. Винодиктов |
| author_sort | А.В. Каленский |
| collection | DOAJ |
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The work is devoted to the development of the model describing laser initiation composite materials being an explosive matrix with metal nanoparticles covered with oxide shell. The model considers the oxide shell as a dielectric that does not absorb light. The example of aluminum nanoparticles covered with alumina is the main one in the paper. The model describes the thermal transfer in the system metal core-oxide shell- explosive material, exothermic decomposition of the explosive considered as a one-step reaction with Arrhe- nius dependence on the rate on temperature, and light absorption of the core-shell interface. The model is written as a system of the equations and respective computer program is developed. The semi-quantitative analysis of the model using the typical thickness of the heated layer of the matrix is performed. It is shown that the radius of the nanoparticle heated most is proportional to the thickness of the heated layer of the ex- plosive matrix as in the previous versions of the model though the coefficient depends on the oxide shell thickness. The numerical analysis is done. The dependencies of critical energy density on the oxide shell thickness at constant nanoparticle’s radius and on the radius at constant shell thickness are calculated. The dependence on radius shows the existence of the optimal particle minimizing the critical energy density whose radius depends on the shell thickness.
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| format | Article |
| id | doaj-art-a8149c3c2c874b7d97d1ae3de8bd4f8e |
| institution | OA Journals |
| issn | 2518-7198 2663-5089 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Academician Ye.A. Buketov Karaganda University |
| record_format | Article |
| series | Қарағанды университетінің хабаршысы. Физика сериясы |
| spelling | doaj-art-a8149c3c2c874b7d97d1ae3de8bd4f8e2025-08-20T02:17:34ZengAcademician Ye.A. Buketov Karaganda UniversityҚарағанды университетінің хабаршысы. Физика сериясы2518-71982663-50892024-12-0111629410.31489/2024ph4/46-53The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decompositionА.В. КаленскийА.А. ЗвековА.П. БоровиковаЕ.В. ГалкинаП.О. Винодиктов The work is devoted to the development of the model describing laser initiation composite materials being an explosive matrix with metal nanoparticles covered with oxide shell. The model considers the oxide shell as a dielectric that does not absorb light. The example of aluminum nanoparticles covered with alumina is the main one in the paper. The model describes the thermal transfer in the system metal core-oxide shell- explosive material, exothermic decomposition of the explosive considered as a one-step reaction with Arrhe- nius dependence on the rate on temperature, and light absorption of the core-shell interface. The model is written as a system of the equations and respective computer program is developed. The semi-quantitative analysis of the model using the typical thickness of the heated layer of the matrix is performed. It is shown that the radius of the nanoparticle heated most is proportional to the thickness of the heated layer of the ex- plosive matrix as in the previous versions of the model though the coefficient depends on the oxide shell thickness. The numerical analysis is done. The dependencies of critical energy density on the oxide shell thickness at constant nanoparticle’s radius and on the radius at constant shell thickness are calculated. The dependence on radius shows the existence of the optimal particle minimizing the critical energy density whose radius depends on the shell thickness. https://phs.buketov.edu.kz/index.php/physics-vestnik/article/view/749laser initiationthermal explosionhot-spot modelcore-shell nanoparticlesenergetic materials |
| spellingShingle | А.В. Каленский А.А. Звеков А.П. Боровикова Е.В. Галкина П.О. Винодиктов The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition Қарағанды университетінің хабаршысы. Физика сериясы laser initiation thermal explosion hot-spot model core-shell nanoparticles energetic materials |
| title | The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition |
| title_full | The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition |
| title_fullStr | The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition |
| title_full_unstemmed | The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition |
| title_short | The laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition |
| title_sort | laser initiation of energetic materials doped with metal nanoparticles having oxide shell explosive decomposition |
| topic | laser initiation thermal explosion hot-spot model core-shell nanoparticles energetic materials |
| url | https://phs.buketov.edu.kz/index.php/physics-vestnik/article/view/749 |
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