Author/Authors :
Belli، نويسنده , , P. and Bernabei، نويسنده , , R. and Budakovsky، نويسنده , , S.V. and Cappella، نويسنده , , F. and Cerulli، نويسنده , , R. and Danevich، نويسنده , , F.A. and dʹAngelo، نويسنده , , S. and Incicchitti، نويسنده , , A. and Laubenstein، نويسنده , , M. and Poda، نويسنده , , D.V. and Polischuk، نويسنده , , O.G. and Tretyak، نويسنده , , V.I.، نويسنده ,
Abstract :
The radioactive contamination of two 26 g samples of low background lithium iodide crystal scintillators doped by europium and enriched in 7Li to 99.9% (7LiI(Eu)) has been investigated by scintillation method at the sea level, and by ultra-low background HPGe γ spectrometry deep underground. No radioactive contamination was detected. In particular, the contamination of the crystal scintillators by 226Ra and 228Th does not exceed 1 mBq/kg, and the activity of 40K is less than 0.5 Bq/kg.
Keywords :
Low background HPGe gamma detector , 7LiI(Eu) single crystal , Low background scintillation detector , Radioactive contamination
