Elsevier

Nuclear Physics A

Volume 218, Issue 3, 21 January 1974, Pages 559-572
Nuclear Physics A

The 3H(t, α)2n reaction at 40 keV

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Abstract

The two-dimensional energy spectrum of the α-particle and the neutron of the 3H(t, α)2n reaction was measured with a small single-gap accelerator at 90 keV. The mean energy of the 3H ions initiating the reaction was estimated to be about 40 keV, i.e. small against the Q-value of 11.3 Me V. It was found that the n-α interaction plays a strong part in the reaction so that no unambiguous determination of an-n, the n-n scattering length, was possible. The addition of an n-α final-state interaction to the n-n Jost-function enhancement factor in the analysis greatly improves the agreement with the experimental results, but it was not possible to distinguish between various forms of the n-α enhancement factors nor between different combinations of the n-α and the n-n interactions. The failure to obtain a well established n-n interaction peak is attributed to the absence of a direct reaction mechanism.

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Present address: Physics Department, University of British Columbia, Vancouver, Canada.

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