Abstract
The distribution of Gamow-Teller strength in the /sup 18/O(p,n) /sup 18/F reaction was studied at a bombarding energy of 135 MeV. Five 1/sup +/, T = 0 states are identified below E/sub x/ = 7 MeV and a concentration of 1/sup +/ states of presumed T = 1 character is observed between E/sub x/ = 9.5 and 12 MeV. Approximately 82% of the 1/sup +/ strength is concentrated into the ground-state transition and only 5.5% is seen in the T = 1 component. Normalization of the ground-state transition to the known Gamow-Teller matrix element from the analogous beta decay of /sup 18/Ne allows the (p,n) cross sections to be related to the Gamow-Teller strength. The resulting total Gamow-Teller strength observed in the (p,n) reaction is about two-thirds of the minimum value required by the sum rule for a T = 1 nucleus. This result is in reasonable agreement with the total Gamow-Teller strength predicted from a shell-model calculation which uses empirically renormalized single-particle Gamow-Teller matrix elements. The concentration of the T = 0 strength predominantly into the ground state and the observed ratio of T = 1 to T = 0 strength also are consistent with these calculations.
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.
