Measurement of fast neutron detection efficiency with 6Li and 7Li enriched CLYC scintillators

Applications of Novel Scintillators for Research and Industry 2016

物理学;工业技术

Mentana, A.^1,2 ; Camera, F.^1,2 ; Giaz, A.^1 ; Blasi, N.^1 ; Brambilla, S.^1 ; Ceruti, S.^1,2 ; Gini, L.^1 ; Groppi, F.^1,2 ; Manenti, S.^1,2 ; Million, B.^1 ; Riboldi, S.^1

INFN Milano, Via Celoria 16, Milano

20133, Italy^1

University of Milano, Via Celoria 16, Milano

20133, Italy^2

关键词: 6Li isotopes;    Cylindrical samples;    Detection efficiency;    Energy regions;    Energy resolutions;    Fast neutrons;    Fast-neutron detection;    Thermal neutrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/763/1/012006/pdf
DOI  :  10.1088/1742-6596/763/1/012006

学科分类：工业工程学

来源: IOP

【 摘 要 】

The CLYC (Cs2LiYC6:Ce) crystal belongs to the elpasolite scintillator family, discovered about 15 years ago. It is a very interesting material because of its good energy resolution and its capability to identify and measure gamma rays and fast/thermal neutrons. In the present work, the fast neutron detection efficiency for two different CLYC cylindrical samples has been measured. These two crystals, both with dimension (thickness x diameter) 1"×1", were respectively enriched with more than 99% of7Li (CLYC-7) and with ∼ 95% of6Li (CLYC-6). The presence of the 6Li isotope makes the CLYC-6 ideal to detect thermal neutrons. In order to compare the two scintillators, only the detection efficiency for fast neutrons was considered, neglecting the energy region associated to thermal neutrons in both the crystals. The measurement was performed at the L.A.S.A. Laboratory of INFN and University of Milano (Italy), using a241Am-Be source.