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NSR database version of April 27, 2024.

Search: Author = F.Portillo Chaves

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2023MA18      Phys.Rev. C 107, 035806 (2023)

C.Marshall, K.Setoodehnia, G.C.Cinquegrana, J.H.Kelly, F.Portillo Chaves, A.Karakas, R.Longland

New constraints on sodium production in globular clusters from the ²³Na(³He, d)²⁴Mg reaction

NUCLEAR REACTIONS ²³Na(³He, d)²⁴Mg, ²³Na(³He, ³He), E=21 MeV; measured reaction products, angular distribution; deduced yields, resonances, resonance widths. ²⁴Mg; deduced levels, spectroscopic factors, proton decay partial width for excited states. ²³Na(p, γ), (p, α), T=0.01-0.5 GK; calculated reaction rate using data obtained in current work on the excited states of ²⁴Mg. Bayesian method combined with the distorted wave Born approximation to assign statistically meaningful uncertainties to deduced values. Relevance to NeNa cycle and star-to-star anticorrelation of sodium and oxygen. Split-pole spectrograph (SPS) at 10 MV TUNL FN tandem accelerator.

doi: 10.1103/PhysRevC.107.035806
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2019SE09      Phys.Rev. C 99, 055812 (2019)

K.Setoodehnia, J.H.Kelley, C.Marshall, F.Portillo Chaves, R.Longland

Experimental study of ³⁵Cl excited states via ³²S(α, p)

NUCLEAR REACTIONS ³²S(α, p), (α, α), E=21 MeV; measured Ep, Ip, Eα, Iα, and differential σ(θ) using Enge split-pole magnetic spectrograph at the 10-MV FN tandem Van de Graaff accelerator facility at TUNL. ³⁵Cl; deduced levels, J, π. ³⁴S(p, γ), at T=0.010-10.0 GK; deduced astrophysical reaction rate. DWBA analysis of σ(θ) data using FRESCO code. Comparison with previous experimental results, and evaluated data in the ENSDF database. ²⁸Si(α, p)³¹P, E=21 MeV; measured Ep, Ip; deduced levels; used for spectral calibration.

doi: 10.1103/PhysRevC.99.055812
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2461. Data from this article have been entered in the XUNDL database. For more information, click here.

2018SE20      Phys.Rev. C 98, 055804 (2018)

K.Setoodehnia, C.Marshall, J.H.Kelley, J.Liang, F.Portillo Chaves, R.Longland

Excited states of ³⁹Ca and their significance in nova nucleosynthesis

NUCLEAR REACTIONS ⁴⁰Ca(³He, α), E=21 MeV; measured Eα, Iα, σ(θ), using Enge split-pole magnetic spectrograph at the 10-MV FN tandem Van de Graaff accelerator of TUNL facility. DWBA analysis of σ(θ) data. ³⁹Ca; deduced levels, J, π, resonances. Comparison with previous experimental data for ³⁹Ca levels from (³He, α), (d, t) and (p, d) reactions, and in ENSDF evaluation. ³⁸K(p, γ), T₉=0.1-0.5; calculated contributions of resonances to astrophysical reaction rate in the nova temperature regime.

doi: 10.1103/PhysRevC.98.055804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2386. Data from this article have been entered in the XUNDL database. For more information, click here.