Abstract
Abstract The production of the multicharged ions of heavy elements (Fe, Si, O, etc.) in comets, as well as in the insterstellar medium, is possibly due to high-velocity (≥20 km/s) grain-grain collisions. The role of such processes is essential in the production of the ions of refractory elements in the comae of dusty Halley type comets at large heliocentric distances and, possibly, in the production of the heavy component of cosmic rays by colliding high-velocity interstellar gas-dust clouds due to the action of the Fermi mechanism and the betatron effect.
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