Proton capture on 19,20O nuclei is measured in inverse kinematics with the active target detector MuSIC@Indiana using CH4 as the target gas. Rejection of unreacted and inelastically scattered beam, along with transfer and fusion on the 12C allows extraction of the (p,n) cross section. As the cross-section for direct (p,n) processes at these energies is small, the measurement provides access to the proton fusion cross-section. An analysis approach that allows extraction of the proton fusion cross-section is detailed.
@article{arxiv.2512.02277,
title = {Measuring $^{19,20}$O(p,n)$^{19,20}$F reactions using an active target detector},
author = {Rohit Kumar and H. Desilets and R. T. deSouza},
journal= {arXiv preprint arXiv:2512.02277},
year = {2026}
}