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NSR database version of April 11, 2024.

Search: Author = J.E.Riley

Found 7 matches.

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2021AD06      Phys.Rev. C 103, 035804 (2021)

P.Adsley, F.Hammache, N.de Sereville, V.Alcindor, M.Assie, D.Beaumel, M.Chabot, M.Degerlier, C.Delafosse, T.Faestermann, F.Flavigny, S.P.Fox, R.Garg, A.Georgiadou, S.A.Gillespie, J.Guillot, V.Guimaraes, A.Gottardo, R.Hertenberger, J.Kiener, A.M.Laird, A.Lefebvre-Schuhl, I.Matea, A.Meyer, M.Mahgoub, L.Olivier, L.Perrot, J.Riley, I.Sivacek, I.Stefan, V.Tatischeff, H.-F.Wirth

Charged-particle branching ratios above the neutron threshold in 19F: Constraining 15N production in core-collapse supernovae

COMPILATION 19F; compiled data from the ENSDF database and from different nuclear reactions in literature for levels, J, π, Γ, Γp, and Γα.

NUCLEAR REACTIONS 19F(p, p'), E=16, 15 MeV; measured E(p), I(p), πα- and pp-coin using the Q3D magnetic spectrograph at Munich at E(p)=16 MeV, and Enge split-pole magnetic spectrometer, and double-sided silicon strip detector (DSSSD) detectors at Orsay at E(p)=15 MeV. 19F; deduced levels between 10.091 and 10.676 MeV in the region of astrophysical interest, width, branching ratios for proton and α decays from levels above the neutron binding energy in 19F. 15N, 18O; deduced energies of the emitted particles, matrices of experimental and simulated coincidence events from α and proton decays of neutron-unbound states in 19F. Relevance to 18F(n, α)15N and 18F(n, p)18O reaction rates for abundances of 15N and 18O in the helium-burning shell during core-collapse supernovae.

doi: 10.1103/PhysRevC.103.035804
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021RI04      Phys.Rev. C 103, 015807 (2021)

J.E.Riley, A.M.Laird, N.de Sereville, A.Parikh, S.P.Fox, F.Hammache, I.Stefan, P.Adsley, M.Assie, B.Bastin, F.Boulay, A.Coc, S.Franchoo, R.Garg, S.A.Gillespie, V.Guimaraes, C.Hamadache, N.Hubbard, J.Kiener, A.Lefebvre-Schuhl, F.de Oliveira Santos, A.Remadi, L.Perrot, D.Suzuki, G.Verde, V.Tatischeff, M.Williams

Sub-threshold states in 19Ne relevant to 18F(p, α)15O

NUCLEAR REACTIONS 19F(3He, t)19Ne, E=25 MeV; measured E(t), I(t) using Enge Split-pole magnetic spectrometer, α and protons from the decay of resonant states in 19Ne, tα-coin, tp-coin, tα(θ), tp(θ) using an array of six double-sided silicon strip detectors (DSSSDs) for α and protons at the ALTO tandem accelerator facility in Orsay. 19Ne; deduced levels, resonances, J, π, Γα/Γ branching ratios. 18F(p, α)15O, E(cm)<1.6 MeV; deduced astrophysical S-factor by R-matrix analysis, proton asymptotic normalization coefficient (ANC) for 1/2+ state. Comparison with predictions of generator coordinate method (GCM).

doi: 10.1103/PhysRevC.103.015807
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2020FA06      Phys.Lett. B 807, 135575 (2020)

J.Fallis, C.Akers, A.M.Laird, A.Simon, A.Spyrou, G.Christian, D.Connolly, U.Hager, D.A.Hutcheon, A.Lennarz, P.O'Malley, S.J.Quinn, J.Riley, A.Rojas, C.Ruiz, M.Williams

First measurement in the Gamow window of a reaction for the γ process in inverse kinematics: 76Se(α, γ)80Kr

NUCLEAR REACTIONS 4He(76Se, γ)80Kr, E=1.4-1.5 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ, reaction rates. Comparison with calculations.

doi: 10.1016/j.physletb.2020.135575
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2580.


2020LE11      Phys.Lett. B 807, 135539 (2020)

A.Lennarz, M.Williams, A.M.Laird, U.Battino, A.A.Chen, D.Connolly, B.Davids, N.Esker, R.Garg, M.Gay, U.Greife, U.Hager, D.Hutcheon, J.Jose, M.Lovely, S.Lyons, A.Psaltis, J.E.Riley, A.Tattersall, C.Ruiz

First inverse kinematics measurement of key resonances in the 22Ne(p, γ)23Na reaction at stellar temperatures

NUCLEAR REACTIONS 1H(22Ne, γ)23Na, E not given; measured reaction products; deduced resonance strengths, reaction rates.

doi: 10.1016/j.physletb.2020.135539
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2572.


2020WI08      Phys.Rev. C 102, 035801 (2020)

M.Williams, A.Lennarz, A.M.Laird, U.Battino, J.Jose, D.Connolly, C.Ruiz, A.Chen, B.Davids, N.Esker, B.R.Fulton, R.Garg, M.Gay, U.Greife, U.Hager, D.Hutcheon, M.Lovely, S.Lyons, A.Psaltis, J.E.Riley, A.Tattersall

First inverse kinematics study of the 22Ne(p, γ)23Na reaction and its role in AGB star and classical nova nucleosynthesis

NUCLEAR REACTIONS 1H(22Ne, γ)23Na, E=161-1274 keV/nucleon from ISAC-I-TRIUMF facility, followed by mass separation of 22Ne fragments; measured Eγ, Iγ, heavy-ion evaporation products, (recoils)γ-coin, time-of-flight spectra using DRAGON array and microchannel plate (MCP) detectors. 23Na; deduced levels, proton resonances, resonance strengths, direct capture cross sections and astrophysical S factors, thermonuclear reaction rates from 0.010 to 10.0 GK. Predicted ejecta mass fractions for 20,21,22Ne, 22,23Na, 24,25,26Mg, 26,27Al. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.102.035801
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2582. Data from this article have been entered in the XUNDL database. For more information, click here.


2017GI09      Phys.Rev. C 96, 025801 (2017)

S.A.Gillespie, A.Parikh, C.J.Barton, T.Faestermann, J.Jose, R.Hertenberger, H.-F.Wirth, N.de Sereville, J.E.Riley, M.Williams

First measurement of the 34S(P, γ)35Cl reaction rate through indirect methods for presolar nova grains

NUCLEAR REACTIONS 34S(3He, d), E=20 MeV; measured deuteron spectra, σ(θ) using Q3D magnetic spectrograph at Maier-Leibnitz-Laboratorium in Garching. 35Cl; deduced levels, L-transfers, spectroscopic factors, proton resonances, J, π, resonance strengths. DWBA analysis of σ(θ) data. Comparison with previous experimental data for 35Cl levels. 34S(p, γ), T=0.1-0.45 GK; deduced astrophysical reaction rates and compared with statistical model calculations. Discussed 34S/32S ratio to distinguish presolar grains from oxygen-neon nova and type II supernova origin.

doi: 10.1103/PhysRevC.96.025801
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2436. Data from this article have been entered in the XUNDL database. For more information, click here.


2017WI14      Phys.Rev.Lett. 119, 242701 (2017)

R.Wilkinson, G.Lotay, A.Lennarz, C.Ruiz, G.Christian, C.Akers, W.N.Catford, A.A.Chen, D.Connolly, B.Davids, D.A.Hutcheon, D.Jedrejcic, A.M.Laird, L.Martin, E.McNeice, J.Riley, M.Williams

Direct Measurement of the Key Ec.m. = 456 keV Resonance in the Astrophysical 19Ne(p, γ)20Na Reaction and Its Relevance for Explosive Binary Systems

NUCLEAR REACTIONS H(19Ne, γ), E=9.24 MeV; measured reaction products, Eγ, Iγ, Eβ, Iβ. 19Ne, 20Na; deduced resonance parameters, reaction rates. Comparison with available data.

doi: 10.1103/PhysRevLett.119.242701
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2292. Data from this article have been entered in the XUNDL database. For more information, click here.


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Note: The following list of authors and aliases matches the search parameter J.E.Riley: , J.E.RILEY