A study of the Li(p,n)Be reaction by the neutron threshold technique |
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Authors: | John L Honsaker |
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Institution: | California Institute of Technology, Pasadena, California, USA |
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Abstract: | The reaction 6Li(p,n)6Be has been studied by slow-neutron detection, with particular attention to the 6Be ground state threshold. The detector response was calculated by a Monte Carlo technique and verified with a measurement of the 7Li( ,n)10B threshold. An analysis of the shape of the 6Be threshold indicated that both s- and p-wave neutrons contribute significantly to the reaction. The results depend on what mode of decay is assumed for the ground state of 6Be. If a two-stage process is assumed, with either an alpha particle and an unbound diproton or 5Li and a proton as intermediate state, the width is found to be 95±28 keV and the Q-value obtained for the 6Li(p,n)6Be reaction is ?5074±13 keV. It was not possible to detertmine which process is predominant. No higher thresholds in the slow neutron yield up to 4 MeV of excitation in 6Be were observed. The data above the ground state threshold are consistent with a broad excited state of 6Be or with the occurrence of other neutron-producing reactions. |
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Keywords: | Nuclear reactions |
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