First direct measurement of the 17f(p,γ)18ne cross section
Abstract
The rate of the 17F(p,γ) 18Ne reaction is of significant importance in astrophysical events like novae and x-ray bursts. A 3+ state in 18Ne predicted to dominate the rate was found at 599.8 keV using the 17F(p,p)17F reaction [1], but the resonance strength was nknown. For the first time, the F1718Ne reaction has been measured directly with the Daresbury Recoil Separator, using a mixed beam of radioactive 17F and stable 17O from the HRIBF at ORNL. A γ width was found for the 599.8 keV resonance in 18Ne, and an upper limit on the direct capture S factor was determined at an intermediate energy of 800 keV. © 2009 American Institute of Physics.