The paper presents the results of observing, in a real time, the process of combustion in air of aluminum nanopowder ignited by laser radiation. The obtained results convincingly evidence the possibility and perspective of visualization of ignition process by means of laser monitor. The video images allow observing the main stages of the combustion process including starting of combustion in the place of laser radiation focusing, spreading of the heat wave and appearance of the second combustion wave. For quantitative analysis of the combustion process, we suggest to analyze the average intensity of images registered by laser monitor.
2. Kharatyan, S. L. and A. G. Merzhanov, "Coupled SHS reactions as a useful tool for synthesis of materials: An overview," Int. J. Self-Propag. High-Temp. Synth., Vol. 21, No. 1, 59-73, 2012.
3. Chung, S. L. and C. H. Lai, "Combustion synthesis of aluminum nitride: A review," Key Eng. Mat., Vol. 521, 101-111, 2012.
4. Hunt, W. H., "New directions in aluminum-based P/M materials for automotive applications," Int. J. Powd. Metal., Vol. 36, No. 6, 50-56, 2000.
5. Wilmanski, A., M. Bucko, Z. P¸edzich, and J. Szczerba, "Salt-assisted SHS synthesis of aluminium nitride powders for refractory applications," J. Mater. Sci. Chem. Eng., Vol. 2, No. 10, 26-31, 2014.
6. Sivan, J. and Y. Haas, "Laser ignition of various pyrotechnic mixtures --- An experimental study," Propellants, Explos., Pyrotech., Vol. 40, No. 5, 755-758, 2015.
7. Medvedev, V., V. Tsipilev, A. Reshetov, and A. P. Ilyin, "Conditions of millisecond laser ignition and thermostability for ammonium perchlorate/aluminum mixtures," Propellants, Explos., Pyrotech., Vol. 42, No. 3, 243-246, 2017.
8. Little, C. E., Metal Vapor Lasers: Physics, Engineering and Applications, John Willey & Sons Ltd., Chichester, 1999.
9. Kazaryan, M. A., V. M. Batenin, V. V. Buchanov, A. M. Boichenko, I. I. Klimovskii, and E. I. Molodykh, High Brightness Metal Vapor Lasers: Physics and Applications, CRC Press, 2017.
10. Withford, M. J., D. J. W. Brown, R. P. Mildren, R. J. Carman, G. D. Marshall, and J. A. Piper, "Advances in copper laser technology: Kinetic enhancement," Prog. Quant. Electron., Vol. 28, No. 3-4, 165-196, 2004.
11. Petrash, G. G., Optical Systems with Brightness Amplifiers, Nauka, Moscow, 1991.
12. Buzhinsky, R. O., V. V. Savransky, K. I. Zemskov, A. A. Isaev, and O. I. Buzhinsky, "Observation of objects under intense plasma background illumination," Plasma Phys. Rep., Vol. 36, No. 13, 1269-1271, 2010.
13. Abramov, D. V., S. M. Arakelian, A. F. Galkin, I. I. Klimovskii, A. O. Kucherik, and V. G. Prokoshev, "On the possibility of studying the temporal evolution of a surface relief directly during exposure to high-power radiation ," Quantum Electron., Vol. 36, No. 6, 569-575, 2006.
14. Buzhinskij, O. I., V. G. Otroshchenko, A. A. Slivitsky, and I. A. Slivitskaya, "Videoscope on the basis of copper vapor laser for spatially-temporal diagnostics of tokamak discharge chamber internal components," Plasma Devices Oper., Vol. 11, No. 3, 155-160, 2003.
15. Gubarev, F. A., A. V. Mostovshchikov, M. S. Klenovskii, A. P. Il’in, and L. Li, "Copper bromide laser monitor for combustion processes visualization," 2016 Progress In Electromagnetic Research Symposium (PIERS), 2666-2670, Shanghai, China, Aug. 8-11, 2016.