The problem of suppression of the charmonium $J/\Psi$ production in collisions of heavy ions has been investigated. The charmonium disintegration processes in the hadron gas, $\pi +J/\Psi \to \pi +c+\bar{c}$ and $\rho +J/\Psi\to D+D$ have been considered. The results obtained suggest that the contribution of the charmonium disintegration in collisions with gas hadrons and the contribution of the quark-gluon plasma production to the charmonium $J/\Psi$ birth suppression are effects of the same order of magnitude.
Department of Quantum Statistics and Field Theory, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia
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