Study of the 19F(p, γ)20Ne radiative capture reaction from 0.2–1.2 MeV

Measurement of theF19(p,γ)Couture1, Beard2, Couder3 et al. 2008Phys. Rev. C263130View full textAdd to dashboardCite

“…The resonance strength was taken from Lyons [21], whereas the branching ratios were taken from Meyers [22]. Previous measurements of the resonance parameters for 19 F(p, γ ) have relied on either a published measurement of the cross sections ( [5][6][7]9]) of resonances in 19 F(p, γ ) or the yield relative to the 19 F(p, α) reaction ( [4]). Even more problematic, uncertainties are not reported by previous authors for the these resonance parameters.…”

“…Previous measurements relied on detecting the >11 MeV primary transition to the first excited state of 20 Ne [4][5][6][7][8][9]. Most of these prior measurements relied on low resolution and relatively small-volume NaI(Tl) detectors.…”

“…All of the measurements were susceptible to pileup from the 6.125-MeV γ rays from the competing (p, α i γ ) reactions as the energy resolution was insufficient to separate the two components. Subotić [9] and Clifford [8] made the only measurements that employed a highresolution Ge(Li) detector. Due to the low detection efficiency for the high-energy γ rays from 19 F(p, γ ), the Subotić measurement was limited to observing on-resonance components [9].…”

“…Subotić [9] and Clifford [8] made the only measurements that employed a highresolution Ge(Li) detector. Due to the low detection efficiency for the high-energy γ rays from 19 F(p, γ ), the Subotić measurement was limited to observing on-resonance components [9]. Significant discrepancy was observed between the published results of the different measurements, particularly of the strength of a broad resonance.…”

New measurement of the $E_{\mathrm{c.m.}}=323$ keV resonance in the $^{19}$F$($p,γ$)$^{20}$Ne reaction

“…Studies of the 19 F(p, γ) 20 Ne reaction have proven experimentally challenging due to copious γ-ray background from 19 F(p, αγ) 16 O. Earlier measurements have relied on detecting E γ > 11 MeV primary γ-rays to the first excited state in 20 Ne (E x = 1.633 MeV) [4,5]. These measurements were susceptible to pile-up from the 6.125-MeV γ-rays from 19 F(p, αγ) 16 O.…”