N14(n, t) and N14(n, d) Angular Distributions at 14.7 MeV

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Scientific paper

A triple-coincidence counter telescope consisting of two proportional dE counters and a solid-state E detector was used to study the angular distributions of tritons and deuterons for the ground-state transitions of N14 induced by 14.7-MeV neutrons. The relative triton-to-deuteron peak yield was found to be about 0.3. The (n, t) angular distribution is compared with pickup theory and with two other deuteron-transfer interactions between the ground states of N14 and C12: the N14(α, Li6) and N14(d, α) reactions. In these reactions the orbital angular momentum of the picked-up deuteron is principally L=2, with a smaller contribution from L=0 pickup suggested by the data. In addition, the N14(n, d) angular distribution is compared with the Gaussian-cutoff pickup theory, and with the N14(p, d) reaction to the ground state of the mirror nucleus N13. The angular distributions, absolute magnitudes, and reduced widths of the two reactions are nearly identical, as expected. Cluster-model interpretations of the N14 data are discussed.

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