  We study a uniformly accelerated detector coupled to a massless scalar field
for a finite time interval. By considering the detector initially prepared in a
superposition state, qubit state, we find that the acceleration induces
decoherence on the qubit. Our results suggest the dependence of loss of
coherence on the polar angle of qubit state on a Bloch sphere and the time
interaction. The adjust those parameters can significantly improve the
conditions to estimate the degree of decoherence induced by Unruh radiation.
