A Kh Budaev’s scientific contributions

This article presents the results of laboratory experiments on testing of equipment and methods for determining the specific charge on reagent particles formed during the sublimation of the AgI and the AD-1 pyrocomposition. The method for measuring charged particles is based on the use of the deflection of reagent particles in the electric field of a flat capacitor. Preliminary results obtained in the course of research made it possible to establish that when pyrotechnic compositions are sublimated in the electric field of a flat capacitor with polarity «0», «+», the reagent particles are charged negatively, and when using a capacitor with polarities «0», «–», the particles of the reagent are charged positively. When using a bipolar capacitor, the particles are charged both positively and negatively, the ratio between negative and positively charged particles is 7:3.

The article is a continuation of experimental research on the search for new, more effective compositions for active effects on clouds and fogs. The paper also presents the results of studies of the ice-forming efficiency of pyrotechnic compositions based on AgI and zinc oxide nanotubes. The dependence of the specific yield of ice-forming active particles for various zinc contents in the initial composition of AD-1 was revealed.

The features of the formation of ice crystals on reagent particles in a cloudy medium in the presence and absence of an electric field have been studied in the work. A complex of equipment from the laboratory of cloud microphysics of the High-mountain Geophysical Institute, which includes a sublimation chamber, a small cloud chamber, and an installation for bubbling reagent particles, was used. As a result of the experiments, it was found that when the condensation-crystallization mechanism is implemented, the specific yield of ice-forming nuclei in the cloud chamber decreases with increasing electric field intensity. When implementing the immersion mechanism, the electric field does not affect the specific output of ice-forming nuclei. In the case of a contact mechanism, the specific output of ice-forming nuclei is 2–3 orders of magnitude smaller than with the realization of the condensation-crystallization and immersion mechanisms.