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NSR database version of April 26, 2024.

Search: Author = S.Aguilar

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2023GU04      Phys.Rev. C 107, 025805 (2023)

A.Gula, R.J.deBoer, S.Aguilar, J.Arroyo, C.Boomershine, B.Frentz, J.Gorres, S.Henderson, R.Kelmar, S.McGuinness, K.V.Manukyan, S.Moylan, D.Robertson, C.Seymour, Shahina, E.Stech, W.Tan, J.Wilkinson, M.Wiescher

¹⁰B + α reactions at low energies

NUCLEAR REACTIONS ¹⁰B(α, p), (α, d), E(cm)=186-1430 keV; measured Ep, Ip, deuteron spectrum; deduced σ(θ) for (α, p₀), (α, p₁), (α, p₂), (α, p₃) and (α, d) channels, resonances, astrophysical reaction rate (T=0.01-2 GK), S-factor. ¹⁰B(α, α), (α, n), (α, p), (α, d); analyzed present and previous experimental data for σ(θ) distributions by R-matrix formalism using AZURE2 code. ¹⁰B(α, n), E(cm)=0.21-1.42 MeV; deduced astrophysical reaction rate (T=0.01-2 GK). ¹⁴N; deduced resonances, J, π, decay widths. Comparison to previous experimental data. Target surrounded by 2 silicon surface barrier detectors (SSBD) detectors at Stable ion Accelerator for Nuclear Astrophysics (Univ. Notre Dame).

doi: 10.1103/PhysRevC.107.025805
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2021DE17      Phys.Rev. C 103, 065801 (2021)

R.J.deBoer, A.Boeltzig, K.T.Macon, S.Aguilar, O.Gomez, B.Frentz, S.L.Henderson, R.Kelmar, M.Renaud, G.Seymour, B.Vande Kolk, M.Wiescher, C.R.Brune, S.P.Burcher, K.L.Jones, J.M.Kovoor, M.Febbraro, G.Imbriani, S.Mosby, K.Smith, R.Toomey

Investigation of secondary γ-ray angular distributions using the ¹⁵N(p, α₁γ)¹²C^* reaction

NUCLEAR REACTIONS ¹⁵N(p, αγ)¹²C^*, E=0.88-4.0 MeV; measured Eγ, Iγ, angular distributions using Hybrid Array of LaBr₃(Ce) Gamma Ray Detectors (HAGRiD) at the 5-MV Santa Ana accelerator of University of Notre Dame; deduced σ(E), σ(θ) distributions. ¹⁵N(p, αγ)¹²C^*; ¹²C(α, α), (α, α'); analyzed present and previous experimental data for σ(θ) distributions by R-matrix formalism using AZURE2 code. Discussed inconsistencies and difficulty in fitting previous data. Detailed cross section data for both the reactions listed in the Supplemental Material.

doi: 10.1103/PhysRevC.103.065801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2642.

2020AH03      Phys.Rev. C 102, 035805 (2020)

T.Ahn, S.Aguilar, R.J.deBoer, D.W.Bardayan, A.Boeltzig, C.R.Brune, S.P.Burcher, K.Y.Chae, S.L.Henderson, R.K.Grzywacz, K.L.Jones, J.M.Kovoor, K.T.Macon, K.Manukyan, S.Mosby, P.D.O'Malley, M.Renaud, K.Smith, C.Thornsberry, B.Vande Kolk, M.Wiescher

Cross-section measurements to low-lying excited final states in the ²⁴Mg(α, p)²⁷Al^*(γ) reaction as an energy source for x-ray bursts

NUCLEAR REACTIONS ²⁴Mg(α, p)²⁷Al^*, E=4.0-5.4 MeV; measured Eγ, Iγ, γ(θ) for γ rays emitted by resonances in ²⁷Al using an array of 13 LaBr₃ detectors from the Hybrid Array of Gamma Ray Detectors (HAGRiD) and enriched target at the ANA accelerator at the University of Notre Dame; deduced yields for resonances in ²⁷Al, integrated angular yields for resonances in ²⁷Al for (α, p₁) and (α, p₂) channels, astrophysical reaction rates from 1-10 GK. Relevance to energy production in type Ia x-ray bursts. The γ rays also seen from ²⁴Mg(α, a°), ²⁴Mg(α, n)²⁰Ne, and ²⁴Mg(α, γ)²⁸Si.

doi: 10.1103/PhysRevC.102.035805
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2697.

2020LI08      Phys.Rev. C 101, 025808 (2020)

Q.Liu, M.Febbraro, R.J.deBoer, S.Aguilar, A.Boeltzig, Y.Chen, M.Couder, J.Gorres, E.Lamere, S.Lyons, K.T.Macon, K.Manukyan, L.Morales, S.Pain, W.A.Peters, C.Seymour, G.Seymour, R.Toomey, B.Vande Kolk, J.Weaver, M.Wiescher

Low-energy cross-section measurement of the ¹⁰B(α, n)¹³N reaction and its impact on neutron production in first-generation stars

NUCLEAR REACTIONS ¹⁰B(α, n)¹³N, E=575-2522 keV; measured E(n), I(n), n(θ), σ(E, θ), differential S factors using deuterated liquid scintillator detector for neutrons at the University of Notre Dame Nuclear Science Laboratory. ¹⁰B(α, pγ)¹³C, E=835-1665 keV; measured Eγ and Iγ. ¹⁴N; deduced levels, resonances, J, π, Γ_α, Γ_n, Γ_p, Γ_d, and Γ from R-matrix analysis, and compared with earlier experimental results. ¹⁰B(α, n), (α, p), (α, d), (α, α), E(cm)=0.4-1.2 MeV; analyzed present and previous experimental data for differential σ(E) by R-matrix fit. ¹⁰B(α, n)¹³N, T=0.1-10 GK; deduced astrophysical reaction rates, and compared to literature data.

doi: 10.1103/PhysRevC.101.025808
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2511. Data from this article have been entered in the XUNDL database. For more information, click here.

2020PA31      Phys.Rev. C 102, 031601 (2020)

A.Pakou, L.Acosta, P.D.O'Malley, S.Aguilar, E.F.Aguilera, M.Baines, D.Bardayan, F.D.Becchetti, Ch.Boomershine, M.Brodeur, F.Cappuzzello, S.Carmichael, L.Caves, E.Chavez, C.Flores-Vazquez, A.Gula, J.J.Kolata, B.Liu, D.J.Marin-Lambarri, F.F.Morales, K.Rusek, A.M.Sanchez-Benitez, O.Sgouros, V.R.Sharma, V.Soukeras, G.Souliotis

Dominance of direct reaction channels at deep sub-barrier energies for weakly bound nuclei on heavy targets: The case ⁸B + ²⁰⁸Pb

NUCLEAR REACTIONS ²⁰⁸Pb(⁸B, ⁷Be), E=30 MeV, [secondary ⁸B beam from ³He(⁶Li, X)⁷Li/⁷Be/⁸B reaction using TwinSol facility at the University of Notre Dame FM tandem accelerator]; measured reaction products and elastically scattered particles, differential σ(θ) using Si telescopes, time-of-flight ΔE-E spectra; deduced direct to total reaction cross section, and compared with previous experimental σ ratios for ²⁰⁹Bi+⁶He, ⁵⁸Ni+⁸B, and ²⁸Si+⁷Be reactions, breakup cross section for the ²⁰⁸Pb+⁸B system at deep sub-barrier energies. Comparison with CDCC calculations, with Coulomb plus nuclear potentials, and Coulomb potentials only.

doi: 10.1103/PhysRevC.102.031601
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2581.

2020RA24      Phys.Rev.Lett. 125, 202701 (2020)

J.S.Randhawa, Y.Ayyad, W.Mittig, Z.Meisel, T.Ahn, S.Aguilar, H.Alvarez-Pol, D.W.Bardayan, D.Bazin, S.Beceiro Novo, D.Blankstein, L.Carpenter, M.Cortesi, D.Cortina-Gil, P.Gastis, M.Hall, S.Henderson, J.J.Kolata, T.Mijatovic, F.Ndayisabye, P.O'Malley, J.Pereira, A.Pierre, H.Robert, C.Santamaria, H.Schatz, J.Smith, N.Watwood, J.C.Zamora

First Direct Measurement of ²²Mg(α, p)²⁵Al and Implications for X-Ray Burst Model-Observation Comparisons

NUCLEAR REACTIONS ⁴He(²²Mg, p), E ∼ 5 MeV/nucleon; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with Non-Smoker calculations, available data.

doi: 10.1103/PhysRevLett.125.202701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2584.