An accurate measurement of the 10B(n,p)10Be cross section at thermal energies

Abstract Considering the varied geophysical applications of 10Be, we have made an accurate measurement of the thermal neutron cross section for the reaction 10B(n, p)10Be. In the literature, only upper and lower limit values have been reported for this cross section. Using the accelerator mass-spectrometric technique for the detection of 10Be, we obtained a value of 6.8 ± 0.5 mb. This value is one order of magnitude lower than the cross section for the tritium channel in 11B compound nucleus.