Equipment for electrolytic deposition of actimide thin layers

Laboratory equipment was developed for the preparation of sources for pulse height analysis of alpha emitting radionuclides. It consists of an electrolysis crucible, a stabilized dc supply and a cooling device. Electrolytic deposition of uranyl nitrate on a polished stainless steel plate (25 mm in diameter, 201 mm2 in area) is done in the teflon crucible (inner diameter 16 mm) in a solution of NaHSO4 and Na2SO4 at pH 1.5 to 2.5, a temperature of ca 40 degC and a current of 0.5 to 1.0 A. The anode is a platinum spiral with an active area of 565 mm2 and a distance of 6 mm from the cathode. Under constant experimental conditions (time, composition of solution, etc.) a pulse height spectrum of uranly nitrate was obtained with an energy resolution of 37 keV (FWHM). (B.S.)