V.F. Fedorov - Dr. Sc. (Phys.-Math.), Professor, National Research Nuclear University «MEPhI» (Moscow). E-mail: fvf48@yandex.ru K.S. Mozgov - Ph. D. (Phys.-Math.), Head of Department, JSC «RPC «PSI». E-mail: mks150360@mail.ru Yu.V. Puzanov - Dr. Sc. (Eng.), Leading Research Scientist, JSC «RPC «PSI». E-mail: YuPuzanov@gmail.com

The possibility of registration of the incoherent microwave radiation of powerful atmospheric explosions on board of spacecraft has been considered in the paper. Given that the most part of the energy of these explosions account for the shock wave, one of the possible mechanisms of generation of incoherent microwave radiation associated with the shock waves - namely, electricdipole radiation of electrons has been considered. The mechanism of generation of this radiation is as follows. At the spread of powerful spherical shock wave in the air due to the action of the soft X ray radiation from the shock front, ionization of the air in the frontal area happens. Due to the speed difference of electrons and ions in the shock wave front, the charges are separated, a radial electric field arises and plasma oscillations are excited, sinking at collisional processes. Electricdipole radiation of oscillating electrons arises. At the spread of the shock wave, temperature at its front decreases with the time, and the plasma frequency of electrons decreases as well. At the decrease of the plasma frequency to the operating frequency of the radiometer, instrument will register the impulse of electromagnetic radiation. It is shown that the incoherent microwave radiation of atmospheric explosions caused by the electricdipole radiation of electrons may be used for the registration by radiometers placed at the low earth orbit spacecrafts.

 

1. Fedorov V.F., Kotov JU.B., Mozgov K.S., Semenova T.A. Mikrovolnovoe izluchenie jadernogo vzryva. M.: Knizhnyjj dom «LIBROKOM». 2013.
2. Zeldovich JA.B., Rajjzer JU.P. Fizika udarnykh voln i vysokotemperaturnykh gidrodinamicheskikh javlenijj. M.: Nauka. 1966.
3. Korobejjnikov V.P. Zadachi teorii tochechnogo vzryva. M.: Nauka. 1985.
4. Broud G.L. Raschety vzryvov na EHVM. Gazodinamika vzryvov. M.: Mir. 1976.
5. Fedorov V.F. EHlementy gidrodinamiki. M.: MIFI. 1994.