Abstract
s produced in Y/sup 90/ by thermal neutron irradiation of Y/sup 89/. The thermal capture cross section for the production of the isomer was measured to be 1.0 plus or minus 0.2 mb. The decay of the isomeric level is characterized by the emission of two cascade gamma rays of 0.482 and 0.203 Mev. Conversion coefficient measurements indicated that the isomeric level at 0.685- Mev decays by M4 or E5 radiation to an intermediate level at 0.203 Mev followed by a predominantly M1 transition to the ground state of Y/sup 90/. Gamma-gamma directional correlation measurements and internal conversion measurements indicated that the level at 0.203 Mev has spin 3 with odd parity and that the level at 0.685 Mev has spin 7 or 8 with even parity. A shell-model configuration of (g/sub 9/2/ d/sub 5// /sub 2/) was assigned to the isomeric state. (auth)
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.
