Abstract
We have developed a novel technique for measurements of low-energy reactions using heavy-ion beams and a differentially pumped windowless gas target. We applied this new approach to study the 183 keV resonance in the () reaction. We report a (center-of-mass) resonance energy of keV and a resonance strength of meV, and we set an upper limit (95% confidence) on the total width of the state of keV. This resonance is important for the () reaction rate, and we find that production is significantly decreased in low-mass ONeMg novae but less affected in more energetic novae. We also report the first determination of the stopping power for oxygen ions in hydrogen gas near the peak of the Bragg curve ( keV/u) to be eV cm.
1 More- Received 14 March 2007
DOI:https://doi.org/10.1103/PhysRevC.75.065801
©2007 American Physical Society