Abstract
Using56Co sources, a 3.254 MeV level in238U was photoexcited by aγ-line emitted in the decay of the 4.100 MeV level in56Fe. 10γ-transitions deexciting this 3.254 MeV level were identified. Spin and parity were determined to be 1−. By moving the56Co source in a high speed centrifuge the profile of the 3.254 MeV emission line was investigated. By applying a new variety of Doppler shift analysis a lifetime ofτ Fe=55±25fs was obtained for the 4.100 MeV level in56Fe. The cross section for nuclear resonance fluorescence yields a lifetime ofτ U =0.33±0.12 ps for the 3.254 MeV level in238U.
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.
