Abstract:
Black body radiation in a plasma is altered due to cut off frequency which highly
depends upon the plasma density. Mass energy of the photon in plasma indeed the
chemical potential. As
2
2
m c h p
T T
if
0
we recover the Stefan Boltzmann law
from total kinetic energy equation form equation of Black body radiation in plasma,
however in plasma
is different from form zero. The value of chemical potential may be
now positive. Kinetic energy of the plasma body radiation exceeds the one given by the
Stefan-Boltzmann law; the larger the value of, the larger this excess, which, when
is
larger than unity become much, larger in vacuum. In plasmas the total all
Thermodynamical parameter are altered drastically form vacuum, like total photon
energy, total kinetic energy, the total number of photon, free energy, entropy and
pressure, changes in all these Thermodynamical parameters are discussed here and
changes are expressed