Thermal bremsstrahlung probing the nuclear liquid-gas phase transition

Abstract

We present the results of the analysis of the hard photon production in the ${}^{129}${Xe}+${}^{\mathrm{nat}}${Sn} at 50{\it A} 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.

9 pages, 6 figures, presented at TAPS Workshop VI, Krzyze, Poland, September 2001 (to be published in Acta Phys. Pol.)