  Total entropy generated by the Unruh effect is calculated within the
framework of information theory. In contrast to previous studies, here the
calculations are done for the finite time of existence of the non-inertial
reference frame. In this case only the finite number of particles is produced.
Dependence on mass of the emitted particles is taken into account. Analytic
expression for the entropy of radiated boson and fermion spectra is derived. We
study also its asymptotics corresponding to limiting cases of low and high
acceleration. The obtained results can be further generalized to other
intrinsic degrees of freedom of the emitted particles, such as spin and
electric charge.
