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NSR database version of April 27, 2024.

Search: Author = L.N.Downen

Found 6 matches.

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2023CO08      Nucl.Instrum.Methods Phys.Res. A1056, 168654 (2023)

A.L.Cooper, S.Hunt, L.Downen, K.Setoodehnia, F.Portillo, C.Marshall, T.B.Clegg, A.E.Champagne, R.Longland

Correlated characterization of 20Ne-implanted targets using nuclear reaction analysis, Rutherford backscattering spectrometry, and ion transport modeling

NUCLEAR REACTIONS 20Ne(p, γ), E=1169 keV; 20Ne(α, α), E=2 MeV; measured reaction products, Eγ, Iγ; deduced resonance parameters, yields. The model FN tandem Van de Graaff accelerator at TUNL.

doi: 10.1016/j.nima.2023.168654
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2023CO09      Nucl.Instrum.Methods Phys.Res. A1056, 168648 (2023)

A.L.Cooper, S.Hunt, L.Downen, K.Setoodehnia, F.Portillo, C.Marshall, T.B.Clegg, A.E.Champagne, R.Longland

252Cf yield calibration method for nuclear material accountancy and safeguards practitioners

RADIOACTIVITY 252Cf(SF); measured decay products, En, In; deduced neutron yields using passive neutron correlation counting (PNCC). The neutron source used in this evaluation was previously certified by the National Institutes of Science and Technology (NIST), which provides a reference for the accuracy of the PNCC method.

doi: 10.1016/j.nima.2023.168648
Citations: PlumX Metrics

2022DO04      Phys.Rev. C 105, 055804 (2022)

L.N.Downen, C.Iliadis, A.E.Champagne, T.B.Clegg, A.Coc, J.Dermigny

Thermonuclear reaction rate of 29Si(p, γ)30P

NUCLEAR REACTIONS 29Si(p, γ), E(cm)=200-420 keV; measured Eγ, Iγ, γγ-coin; deduced resonance energies, resonance strengths. 30P; deduced levels, J, π, branching ratios. 29Si(p, γ), T=0.01-5.0 GK; deduced total thermonuclear reaction rates. Investigated the influence of possibly unobserved resonances on the reaction rates. Comparison to other experimental data. HPGe detector surrounded by a 16-segment NaI(Tl) annulus comprising LENA γγ-coincidence spectrometer at TUNL.

doi: 10.1103/PhysRevC.105.055804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2769. Data from this article have been entered in the XUNDL database. For more information, click here.

2019HU08      Phys.Rev. C 99, 045804 (2019)

S.Hunt, C.Iliadis, A.Champagne, L.Downen, A.Cooper

New measurement of the Elabα = 0.83 MeV resonance in 22Ne(α, γ)26Mg

NUCLEAR REACTIONS 22Ne(α, γ)26Mg, E=815, 904 keV; 22Ne(p, γ)23Na, E=479 keV; measured Eγ, Iγ, γγ-coin using HPGe and NaI(Tl) detectors at the JN Van de Graaff accelerator of the Laboratory for Experimental Nuclear Astrophysics (LENA); deduced yield curves for 479-keV proton resonance in 23Na. 26Mg; deduced level, precise energy of the 830-keV resonance by γγ-coin method, resonance strength. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.99.045804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2399. Data from this article have been entered in the XUNDL database. For more information, click here.

2017KE01      Phys.Rev. C 95, 015806 (2017)

K.J.Kelly, A.E.Champagne, L.N.Downen, J.R.Dermigny, S.Hunt, C.Iliadis, A.L.Cooper

New measurements of low-energy resonances in the 22Ne (p, γ) 23Na reaction

NUCLEAR REACTIONS 22Ne(p, γ), E=165, 192, 425, 441 keV; measured Eγ, Iγ, γγ-coin for resonances and direct capture process using HPGe-NaI detectors and plastic scintillator cosmic ray veto at LENA-TUNL facility. 23Na; deduced levels, resonance strengths, σγ for direct capture state, γ-ray branching ratios from singles and coincidence γ-ray data for resonant states, thermonuclear reaction rates.

doi: 10.1103/PhysRevC.95.015806
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2254. Data from this article have been entered in the XUNDL database. For more information, click here.

2015BU02      Phys.Rev. C 91, 015812 (2015)

M.Q.Buckner, C.Iliadis, K.J.Kelly, L.N.Downen, A.E.Champagne, J.M.Cesaratto, C.Howard, R.Longland

High-intensity-beam study of 17O(p, γ)18F and thermonuclear reaction rates for 17O + p

NUCLEAR REACTIONS 17O(p, γ), E=170-530 keV; measured Eγ, Iγ, γγ-coin at LENA-TUNL facility. 18F; deduced levels, J, π, resonances, γ branching ratios from resonance capture, and from direct capture as function of E(p), resonance strengths, total S(E) factors. 17O(p, γ), (p, α); deduced thermonuclear reaction rates. Comparison with previous results.

doi: 10.1103/PhysRevC.91.015812
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2155. 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 L.N.Downen: , L.N.DOWNEN