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Transient-like radiation quenching mechanism M. Kirakosyan1, A. Leonidov1 1 Lebedev Physical Institute of RAS Chromopermittivity as a phenomenological tool to describe quark-gluon medium. Various theoretic schemes indicate presence of collective quark and gluon states even in thermalized matter. Scattering on them → renormalization of gluon propagator ↔ emerging of chromopermittivity. Equations for in-medium gluodinamics: I. M. Dremin Inhomogeneity of initial state in heavy ion collisions NeXSPheRIO initial energy density in the transverse (left) and reaction (center) planes for a central Au+Au collision at 200 GeV A HIJING energy density fluctuations a thermalization time ~0.5 fm/c. Wave equation in inhomogeneous media. In abelian approximation (color indices are skipped): Model: Feynman rules for averaged values: Propagator: Elemntary polarization loop: Dyson equation: Polarization operator: Effective di(chromo)electric tensor in σ²ka<<1 limit : : Energy loss of relativistic particle in medium. Parameters of model: Correlation amplitude - σ Correlation length - a Initial chromopermittivity function: ε₀(ω) To make calculation self-consistent chromopermittivity function: Results for energy loss (I) Energy losses per length unit of high energy gluon as a function of one's energy (CV = 3): fluctuation amplitude σ = 0.3, initial conductivity ε₀ = 0.6, dielectric function's constancy range border value ω = 6 GeV, correlation length a = 0.5 fm Results for energy loss (II). Cherenkov case. Definition: Δ as a function of ω (GeV) for ε₀ = 7 and σ = 0.3 Conclusions. Chromopermittivity may be used as a phenomenological parameter of strongly interacting media. Effective chromoelectric tensor was calculated in random medium. Energy loss of relativistic particle in stochastic medium may be comparable with the collision ones. Cherenkov energy loss >> stochastic transient-like ones.