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Barium fluoride (BaF$_2$) crystal scintillators are promising detectors tosearch for double beta decay processes in $^{130}$Ba ($Q_{2{\beta}}$ = 2619(3)keV) and $^{132}$Ba ($Q_{2{\beta}}$ = 844(1) keV). The $^{130}$Ba isotope is ofparticular interest because of the indications on 2${\beta}$ decay found in twogeochemical experiments. The radioactive contamination of BaF$_2$ scintillationcrystal with mass of 1.714 kg was measured over 113.4 hours in a low-backgroundDAMA/R&D set-up deep underground (3600 m w.e.) at the Gran Sasso NationalLaboratories of INFN (LNGS, Italy). The half-life of $^{212}$Po (present in thecrystal scintillator due to contamination by radium) was estimated as $T_{1/2}$= 298.8 $\pm$ 0.8(stat.) $\pm$ 1.4(syst.) ns by analysis of the events pulseprofiles.

Radioactive contamination of BaF2 crystal scintillator