19Ne levels studied with the18F(d,n)

A. S. Adekola

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C. R. Brune

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D. W. Bardayan

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et al.

First results of Trojan horse method using radioactive ion beams: 18F(p,α) at astrophysical energies

“…For comparison results coming from Ref. [31,16,32,33] are reported. The agreement is quite good, giving confidence in the possibilities of the application of THM in experiments with RIBs.…”

“…In spite of smany attempts to measure this cross section (see e.g. [2,3,4,5,6,7,8,9,10,11,12,14,15,13,16]) the situation is not clear. In order to improve this situation, we performed two experiments aiming at the measurement of the 18 F(p,α) 15 O using two different techniques, the thick target method and the Trojan Horse Method.…”

Nucleosynthesis in classical nova explosions and type I X-ray bursts

“…Studies have identified uncertainties in the rates of the 18 F(p,α), 25 Al(p,γ) and 30 P(p,γ) reactions as dominant contributors to remaining uncertainties in nova nucleosynthesis [21,29], and many recent measurements have focused on better determining these rates, including Refs. [30][31][32][33][34][35][36][37][38][39]. Additional theoretical studies are encouraged to examine the effects of recent measurements and to confirm the relative robustness of nova nucleosynthesis to nuclear physics uncertanities.…”

Sub-threshold states in Ne19 relevant to F18(p,α)Riley1, Laird2, Séréville3 et al. 2021Phys. Rev. C5060View full textAdd to dashboardCite

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Background: Classical novae result from thermonuclear explosions producing several γ-ray emitters which are prime targets for satellites observing in the MeV range. The early ≤ 511 keV gamma-ray emission depends critically on the 18 F(p,α) 15 O reaction rate which, despite many experimental and theoretical efforts, still remains uncertain.Purpose: One of the main uncertainties in the 18 F(p,α) 15 O reaction rate is the contribution in the Gamow window of interference between sub-threshold 19 Ne states and known broad states at higher energies. Therefore the goal of this work is to clarify the existence and the nature of these sub-threshold states.Method: States in the 19 Ne compound nucleus were studied at the Tandem-ALTO facility using the 19 F( 3 He,t) 19 Ne charge exchange reaction.

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“…Background: Classical novae result from thermonuclear explosions producing several γ-ray emitters which are prime targets for satellites observing in the MeV range. The early ≤ 511 keV gamma-ray emission depends critically on the 18 F(p,α) 15 O reaction rate which, despite many experimental and theoretical efforts, still remains uncertain.…”