Two-quantum radiative thermal neutron capture in H1

N. Wüst, H. Seyfarth, and L. Aldea
Phys. Rev. C 19, 1153 – Published 1 April 1979
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Abstract

A value of (-5.2±6.4) μb has been obtained for the cross section of the two-quantum radiative thermal neutron capture in hydrogen for the energy region 330<Eγ1,Eγ2<1890 keV. Restriction of the evaluation to a γ energy range from 700 to 1520 keV yields (-0.4±3.0) μb. The present results are weighted averages from several coincidence experiments performed with various types of detectors. In one experiment, using two NaI(Tl) detectors, special care was taken to cover also the region of lower γ-ray energies (233<Eγ1,Eγ2<2017 keV), since here the most severe discrepancy to theoretical predictions is indicated by an earlier measurement. The existing data reject a hypothesis concerning nonorthogonality of the S13 neutron-proton capturing and the deuteron ground state. Due to use of a H2O target from the present measurements at the same time the total cross section for the reaction O16(n,γ)O17 could be determined as (187±10) μb.

NUCLEAR REACTIONS H1(n,γγ), O16(n,γ), thermal n, measured σγγ, σγ.

  • Received 30 May 1978

DOI:https://doi.org/10.1103/PhysRevC.19.1153

©1979 American Physical Society

Authors & Affiliations

N. Wüst, H. Seyfarth, and L. Aldea

  • Institut für Kernphysik, Kernforschungsanlage Jülich, Federal Republic of Germany

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Issue

Vol. 19, Iss. 4 — April 1979

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