Title of article :
Measurement of the thermal and fast neutron flux in a research reactor with a Li and Th loaded optical fibre detector
Author/Authors :
Yamane، نويسنده , , Y and Uritani، نويسنده , , A and Misawa، نويسنده , , T and Karlsson، نويسنده , , J.K.-H and Pلzsit، نويسنده , , I، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Abstract :
The spatial dependence of thermal and fast neutron flux was measured axially in the core of a 1 MW research reactor. The measurements were made by a thin optical fibre detector with a neutron sensitive ZnS(Ag) scintillation tip. For thermal neutrons 6Li was used, whereas for fast neutrons 232Th was used as neutron converter. The spatial dependence was measured by moving the fibre axially with a uniform speed. The measurement takes a few minutes, compared to up to 10 h with the conventional wire activation method. Comparison with traditional measurements shows a good agreement.
Keywords :
Optical fibre , research reactor , scintillation detector , Axial flux measurement
Journal title :
Nuclear Instruments and Methods in Physics Research Section A
Journal title :
Nuclear Instruments and Methods in Physics Research Section A