Abstract
A deuteron breakup (BU) parametrization is involved within the BU analysis of recently measured reaction-in-flight (RIF) neutron time-of-flight spectrum, while open questions underlined previously on related fast-neutron induced reaction on Zr isotopes are also addressed in a consistent way, at once with the use of a recent optical potential for α-particles to understand the large discrepancy between the measured and calculated cross sections of the 94 Zr( n ,α) 91 Sr reaction. Thus the synergy between the above-mentioned three distinct subjects may finally lead to smaller uncertainties of the nuclear data for fusion while the RIF neutron spectra may also be used to support nuclear model assumptions.
Highlights
The basic role of the improvement of nuclear data for fusion has recently been pointed out with respect to the overall uncertainties on the measured yield of reaction-inflight (RIF) neutrons with energies up to 30 MeV produced in warm, dense deuterium-tritium plasma [1]
A deuteron breakup (BU) parametrization is involved within the BU analysis of recently measured reaction-in-flight (RIF) neutron time-of-flight spectrum, while open questions underlined previously on related fast-neutron induced reaction on Zr isotopes are addressed in a consistent way, at once with the use of a recent optical potential for α-particles to understand the large discrepancy between the measured and calculated cross sections of the 94Zr(n, α)91Sr reaction
The synergy between the above-mentioned three distinct subjects may lead to smaller uncertainties of the nuclear data for fusion while the RIF neutron spectra may be used to support nuclear model assumptions
Summary
The basic role of the improvement of nuclear data for fusion has recently been pointed out with respect to the overall uncertainties on the measured yield of reaction-inflight (RIF) neutrons with energies up to 30 MeV produced in warm, dense deuterium-tritium plasma [1]. While the ultimate aim has been the improved cross sections for the reactions with thresholds above 15 MeV in order to determine the RIF neutrons yield, a detailed analysis has been proved necessary for the quasimonoenergetic neutrons produced by the 2H(d, n)3He reaction at deuteron energies from 15 to 19 MeV. On the basis of the 90Zr(n, 2n)89Zr monitor reaction cross-section evaluation with assumed uncertainties below 3.5% in the energy range studied, well-improved cross sections were obtained for certain reactions including 94Zr(n, α)91Sr
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