Fang successfully defends Ph.D. dissertation

Author: Janet Weikel

F. Fang

Ruoyu (Fry) Fang successfully defended his Ph.D. thesis on May 30, 2024 on the study of the 15N(a,g)19F reaction and its impact on the production of 19F in Asymptotic Giant Branch (AGB) stars advised by Prof. Manoel Couder. Fry first used the St. George recoil separator to investigate this reaction and demonstrated that limitation in the ability to predict atomic charge state fraction prevented him to provide a complete description of the resonances he was probing. He, then, shifted his experimental approach to gamma spectroscopy and was able to deduce resonance strength, width and energy for two key resonances contributing to the nucleosynthesis of 19F in AGB stars showing a reaction rate increase by up 15% in the temperature range of those stars. In addition to the paper submitted to PRC on those results, Fry published 4 papers in refereed journals. Fry was also the 2024 Cornelius P. Browne Award recipient.