The interaction of 14 MeV neutrons with uranium

Allen, K.W.; Bomyer, P.; Perkin, J.L.

doi:10.1016/0368-3230(61)90098-2

Cited by 3 publications

(1 citation statement)

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“…The first measurement of the 238 U(n,3n) 236 U cross section was reported by Allen et al [6] in 1961 with the spherical shell technique, using long counters to measure neutron multiplication with the increase of uranium shell thickness. Allen reported a cross section of (950 ± 150) mb for 14.0-MeV neutrons, and the neutron energy dispersion was not reported.…”

Section: Introductionmentioning

confidence: 98%

Determination of cross sections for the238U(n,3n)<

Wang

Jiang

et al. 2013

Phys. Rev. C

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The cross sections of the 238 U(n,3n) 236 U reaction induced by neutrons with energies around 14 MeV were determined using a combination of the activation technique and accelerator mass spectrometry (AMS) at the China Institute of Atomic Energy (CIAE). U 3 O 8 samples were irradiated for 198 h by neutrons produced by the 3 H(d,n) 4 He reaction on a 600-kV neutron generator at CIAE. Neutron flux was continuously determined by the activation of flux monitors, Co foils, closely attached to the sample. To accurately determine the long half-life product 236 U, an AMS procedure was established with a sensitivity of about 10 −11 for 236 U/ 238 U. As a result, the cross sections of 238 U(n,3n) 236 U for the incident neutron energies of (14.18 ± 0.30) and (14.65 ± 0.40) MeV were obtained to be (489.3 ± 48.0) and (556.7 ± 27.8) mb, respectively.

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Section: Introductionmentioning

confidence: 98%