We present the results of the analysis of the hard photon production in the ¹²⁹{Xe}+^nat{Sn} at 50A MeV system studied in the GANIL E300 experiment. The energy and angular hard photon distributions confirm the existence of a thermal component which follows the recently measured thermal bremsstrahlung systematics. Exploiting the performances of our complete detection system, consisting of TAPS and 3 charged particle multidetectors, we have also measured the hard photon multiplicity as a function of the charged particle multiplicity.

PACS numbers: 25.70.Pq, 21.65.+f