Probing the origins of $^{19}$F with the $^{19}$F (t, $^{3}$He) $^{19}$O charge exchange reaction
ORAL
Abstract
Nuclear charge-exchange experiments are frequently used to extract Gamow-Teller strengths relevant to astrophysics. This talk will discuss one such recent measurement of the Gamow-Teller strength via the $^{19}$F (t, $^{3}$He) $^{19}$O* reaction at 115 MeV/u. The experiment was performed at the National Superconducting Cyclotron Laboratory using a secondary triton beam, and the $^{3}$He ejectiles were momentum-analyzed in the S800 magnetic spectrometer. The extracted Gamow-Teller strength distribution from this experiment can be directly related to $^{19}$O* beta decay to $^{19}$F. This weak interaction rate may contribute to the astrophysical abundance of $^{19}$F. Additionally, the experimental results will be compared to shell-model calculations in the sd-shell.
*This work was supported by the US NSF (PHY-0822648 and PHY- 0606007).
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