Abstract
An exact formalism is derived for the double differential cross section of a two-stage sequential reaction, which allows fully for the energy-angle correlations at each stage and for the lifetime of intermediate states. Application of the method is made to the two-stage process 7 Li + n → 5 He + 3 H , 5 He → 4 He + n′ which contributes to the reaction 7Li( n, n′) αT. for the range of incident energies 5–14 MeV and with calculations of the contributions from the other major channel, 7 Li + n → 7∗ Li + n′ , 7∗ Li → 4 He + 3 H , comparisons are made of calculated and measured values of dσ dΩ and dσ dE for 7Li( n, n′) αT. Whilst reasonable overall agreement is obtained, comparisons with the emitted neutron energy spectrum in the UKNDL and ENDF/BIV files indicate that there is considerably more structure present than is represented in either of these files.
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.
