  The proposed analogy of particle production from high-energy collisions and
Hawking-Unruh radiation from black holes is extended to finite density
(collisions) and finite-electric charge (black holes). Assuming that the
electric charge is directly proportional to the density (or the chemical
potential), it becomes clear that for at least two freezeout conditions;
constant $s/T^3$ and $E/N$, the proposed analogy works very well. Dependence of
radiation (freezeout) temperature on finite electric-charge leads to an
excellent estimation for Kaon-to-pion ratio, for instance, especially in the
energy range covered by NICA. The precise and complete measurements for various
light-flavored particle yields and ratios are essential in characterizing
Hawing-Unruh radiation from charged black holes and the QCD hadronization at
finite density, as well.
