  The effect of proton irradiation in Ba(Fe0.93Co0.07)2As2 single crystals is
reported. We analyze temperature dependence of current density and normalized
flux relaxation rate in the framework of collective creep model. Glassy
exponent and barrier height for flux creep are directly determined by Maley's
method. Our model functions for barrier height and critical current density in
the absence of flux creep are explained by the superposition of \deltaTc- and
\deltal-pinning. We also approach true critical current density by means of
generalized inversion scheme, and the obtained result is in reasonable
agreement with our model function. Proton irradiation effect on temperature
dependence of current density and normalized relaxation rate can be summarized
as doubling of barrier height at the beginning of flux creep.
