Radiative Capture of Protons in Oxygen at 140 to 170 kev

The thick-target yield of the reaction O¹⁶(p, γ)F¹⁷ has been measured by bombarding Al₂{O}₃$ targets with protons from 140 to 170 kev using currents from 3 ma to 10 ma and counting the induced positron activity of the ${F}¹⁷. The thick-target yield ranges from (1.9±1)×{10}^{{-}17}beta/incident proton at 140 kev to (1.47±0.15)×{10}^{{-}16}beta/incident proton at 170 kev. The corresponding cross sections are (4.6±2.4)×{10}^{{-}11}barn at 140 kev and (2.34±0.3)×{10}^{{-}10}$ barn at 170 kev. The activity was identified by observing the half-life. The cross-section factor ${S}₀$ was found to be 6.8±{}1.4 kev-barns between 140 kev and 170 kev bombarding energy.