The experimental results of dependence of black fragment azimuth (ϕ) and projected angle (ψ) distributions on polar angle θ in silicon-emulsion collisions at 4.5 A GeV∕ c (the Dubna momentum) are reported. There are two regions of enhancement around ϕ=±90 for different θ ranges. These enhancements are due to directed (v 1) and elliptic (v 2) flows. The v 1 ... إقراء المزيد