Abstract
The average cross-section of the 55Mn( n, 2 n) 54Mn reaction has been determined experimentally. The irradiation was carried out in the BR-2 reactor (S.C.K. Mol, Belgium) at a thermal neutron flux of 1·76 × 10 14n cm −2. sec −1, as determined with cobalt and silver monitors (“two foil method”). The equivalent fission neutron flux was measured with the following reference threshold detectors: 32 S(n, p) 32 P( σ = 65 mb), 58 Ni(n, p) 58,58m Co ( σ = 102 mb), 54 Fe(n, p) 54 Mn( σ = 66 mb ). 27 Al(n, α) 24 Na( σ = 0·60 mb) and 58 Ni(n, 2n) 57 Ni( σ = 0·004 mb) . The irradiated Mn 3O 4 samples were measured with a calibrated Ge(Li) detector. For the mean cross-section of the 55Mn( n, 2n) 54Mn reaction a value of 0·21° mb was found. Because of the small deviation of the fast component of the neutron spectrum from the unperturbed fission distribution, this value of the cross-section can be considered as a mean fission neutron cross-section.
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.
