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Accurate measurement of the counting efficiency of a NE-213 neutron detector between 2 and 26 MeV

1972; Elsevier BV; Volume: 105; Issue: 3 Linguagem: Inglês

10.1016/0029-554x(72)90357-6

1878-3759

M. Drosg,

Medical Imaging Techniques and Applications

The neutron detection efficiency of a liquid scintillator (NE-213, 12 cm diam. × 5.7 cm) was measured with various bias settings corresponding to proton energies from 1 MeV to 6 MeV. For neutron energies below about 12 MeV a simplified calculation fits the data very well and the uncertainty in the shape is less than 2%. The importance of contributions from the reaction 12C(n, n′)3 α above the energy is shown. An extensive survey of publications dealing with the efficiency of organic scintillators is also presented.