Development of a determination method of the prompt γ-ray emission probability for the measurement of neutron capture cross sectionsI. Miyazaki1, H. Hayashi1, A. Tojo1, A. Taniguchi2 and M. Shibata3
1 Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
2 Research Reactor Institute, Kyoto University, Kumatori 590-0494, Japan
3 Radioisotope Research Center, Nagoya University, Nagoya 464-8602, Japan
Published online: 21 May 2008
We propose a promising method of the determination of the emission probabilities by normalizing the sum of the relative intensities of the γ-rays populating the ground state. The prompt γ-rays from thermal-neutron capture in 23Na, 27Al, 51V, 55Mn, 59Co, 141Pr, 186W and 197Au were measured and the emission probabilities by this method were deduced. The experiment was performed at the supermirror neutron guide tube at the Kyoto University Reactor. For the nucleus 24Na, the emission probabilities were deduced and they were in agreement with the values, which were deduced by using the γ-rays following the β-decay, within the uncertainties of approximately 5%.
© CEA 2008