Abstract
Recent accurate data obtained for the isomeric cross section of the 197Au(n, 2n) reaction provides an effective opportunity to consider the question of the effective moment of inertia of the nucleus within a consistent model analysis of all available reaction data for the 197Au target nucleus. Moreover, since the corresponding model assumptions are better validated by analysis of the data above 20-30 MeV where only several data with large uncertainties are known, the usefulness of further measurements to be performed at large-scale facilities as SPIRAL-2 and n_TOF, for incident energies up to 40 as well as 100 MeV, are underlined.
Highlights
The actual fusion technology programmes requires a well-qualified nuclear database and validated computational tools for reliable neutronics and activation calculations
Since the corresponding model assumptions are better validated by analysis of the data above 20-30 MeV where only several data with large uncertainties are known, the usefulness of further measurements to be performed at large-scale facilities as SPIRAL-2 and n TOF, for incident energies up to 40 as well as 100 MeV, are underlined
There is a good opportunity to look for the understanding of the model constraints which are responsible for the calculated cross section variations, concerning (a) the incident energies below 20 MeV, where the statistical model (SM) calculations are most sensitive to the parameters related to residual nuclei and emitted particles which are populating them, and (b) the energies above 20-30 MeV, where the pre-equilibrium emission (PE) processes become dominating so that the measured data analysis may better validate the corresponding model assumptions as, e.g., the nuclear potential finite-depth correction in the Geometry-Dependent Hybrid (GDH) model for the partial, particle-hole, level density (PLD) formula
Summary
The actual fusion technology programmes requires a well-qualified nuclear database and validated computational tools for reliable neutronics and activation calculations. There is a good opportunity to look for the understanding of the model constraints which are responsible for the calculated cross section variations, concerning (a) the incident energies below 20 MeV, where the statistical model (SM) calculations are most sensitive to the parameters related to residual nuclei and emitted particles which are populating them, and (b) the energies above 20-30 MeV, where the PE processes become dominating so that the measured data analysis may better validate the corresponding model assumptions as, e.g., the nuclear potential finite-depth correction in the GDH model for the partial, particle-hole, level density (PLD) formula A particular consideration is given to PE parameters and assumptions of the Geometry-Dependent Hybrid (GDH) model - the most important for the medium energies where the global predictions have shown a larger variance with respect to the measured data
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
