The explicit sensitivity coefficients, which account the direct impact of cross sections on the responses through neutron transport equation, can be calculated efficiently with the classical Perturbation Theory.
The implicit sensitivity coefficients, which account the indirect impact of cross sections on the responses through resonance self-shielding, are either omitted in most sensitivity analysis codes, or accounted for based on simple resonance-calculation methods which are not applicable for complex fuel designs.
This paper summarizes the different steps applied to analyze the neutronic codes and their predictions as well as the impact of cross-section generation procedures.
In the absence of cross section data, assumed or parameterized cross section shapes are often used.
Ono (1993) used the theoretical electron impact excitation cross section of the O 1D) state from Banks et al. (1974) that was originally presented by Green and Stolarski (1972).
Figure 2 Total electron impact excitation cross section.
In this paper, we assess the impact of activation cross-section uncertainties on relevant fuel cycle parameters for a conceptual design of a modular European Facility for Industrial Transmutation (EFIT) with a "double strata" fuel cycle.
Second, a complete bridge system is investigated for the impact of the cross-section shapes and column flares on the fragility assessment findings.
This instrument provides an additional tool to check theoretical predictions of electron impact excitation cross sections.
Under rock's transverse and longitudinal inclined impacts, cross section shape of the buried pipeline is an oval shape when the incidence angle α ≤ 45°, and there is no plastic deformation.
A detailed chemical kinetic reaction mechanism for methane combustion with relevant plasma reactions has been compiled, including a set of electron impact cross sections for elastic and inelastic collisions with reactants, intermediate species, and products of methane combustion.
