Measurement of production cross section of tritium from oxygen using semi-monoenergetic p-Be and p-Li neutrons

Seiichi Shibata; Tadashi Shibata; Motoki Imamura; Y. Uwamino; T. Ohkubo; Shinkoh Satoh; N. Morikawa; N. Nogawa

doi:10.1117/12.204158

3 March 1995 Measurement of production cross section of tritium from oxygen using semi-monoenergetic p-Be and p-Li neutrons

Seiichi Shibata, Tadashi Shibata, Motoki Imamura, Y. Uwamino, T. Ohkubo, Shinkoh Satoh, N. Morikawa, N. Nogawa

Author Affiliations +

Proceedings Volume 2339, International Conference on Neutrons and Their Applications; (1995) https://doi.org/10.1117/12.204158
Event: 4th International Conference on Applications of Nuclear Techniques: Neutrons and their Applications, 1994, Crete, Greece

Abstract

The formation cross sections of tritium from oxygen have been measured in p-Li and p-Be neutron fields installed at the INS SF cyclotron in order to estimate the production of tritium in the cooling water of accelerators. Irradiations were performed with the semi-monoenergetic neutrons produced from the ⁷Li(p,n) reaction at proton energies (Ep) from 20 up to 40 MeV in 5 MeV steps and those from ⁹Be(p,n) in 2.5 MeV steps with proton intensities of 2 - 5 (mu) A, which yields from 10¹¹ to 10¹² n/cm² at the target position. The neutron energy spectra were determined by an NE-213 scintillator. The tritium produced in the water used as the oxygen target was extracted by a distillation method, and measured by a liquid scintillation counter. The excitation functions for ¹⁶O(n,t)¹⁴N reaction obtained by the p-Li and p-Be neutrons agreed well with each other within the experimental uncertainties.

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Seiichi Shibata, Tadashi Shibata, Motoki Imamura, Y. Uwamino, T. Ohkubo, Shinkoh Satoh, N. Morikawa, and N. Nogawa "Measurement of production cross section of tritium from oxygen using semi-monoenergetic p-Be and p-Li neutrons", Proc. SPIE 2339, International Conference on Neutrons and Their Applications, (3 March 1995); https://doi.org/10.1117/12.204158

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