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NSR database version of April 29, 2024.

Search: Author = Shahina

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2024DE04      Phys.Rev.Lett. 132, 062702 (2024)

R.J.deBoer, M.Febbraro, D.W.Bardayan, C.Boomershine, K.Brandenburg, C.Brune, S.Coil, M.Couder, J.Derkin, S.Dede, R.Fang, A.Fritsch, A.Gula, Gy.Gyurky, B.Hackett, G.Hamad, Y.Jones-Alberty, R.Kelmar, K.Manukyan, M.Matney, J.McDonaugh, Z.Meisel, S.Moylan, J.Nattress, D.Odell, P.O'Malley, M.W.Paris, D.Robertson, Shahina, N.Singh, K.Smith, M.S.Smith, E.Stech, W.Tan, M.Wiescher

Measurement of the ¹³C(α, n₀)¹⁶O Differential Cross Section from 0.8 to 6.5 MeV

NUCLEAR REACTIONS ¹³C(α, n), E=0.8-6.5 MeV; measured reaction products, En, IN; deduced σ(θ), σ, S-factor. Comparison with available data, R-matrix results from ENDF/B-VIII.0 library. The Oak Ridge National Laboratory Deuterated Spectroscopic Array (ODeSA), 5 MV Stable ion Accelerator for Nuclear Astrophysics, the University of Notre Dame Nuclear Science Laboratory.

doi: 10.1103/PhysRevLett.132.062702
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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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2022DE30      Phys.Rev. C 106, 055808 (2022)

R.J.deBoer, A.Gula, M.Febbraro, K.Brandenburg, C.R.Brune, J.Gorres, Gy.Gyurky, R.Kelmar, K.Manukyan, Z.Meisel, D.Odell, M.T.Pigni, Shahina, E.Stech, W.Tan, M.Wiescher

First near-threshold measurements of the ¹³C(α, n₁)¹⁶O reaction for low-background-environment characterization

NUCLEAR REACTIONS ¹³C(α, n), E=5.0-5.57 MeV; measured En, In, angular distributions; deduced σ(θ, E) for α, n₁ channel. R-matrix analysis with AZURE2 code. Uncertainty estimation with Bayesian R-matrix Inference Code Kit (BRICK). Comparison to the previous estimates of σ for α, ν₁a channel, other experimental results for total σ and statistical model calculations. ³He-spectrometer at Stable ion Accelerator for Nuclear Astrophysics (University of Notre Dame).

doi: 10.1103/PhysRevC.106.055808
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2022SH36      Phys.Rev. C 106, 025805 (2022)

Shahina, J.Gorres, D.Robertson, M.Couder, O.Gomez, A.Gula, M.Hanhardt, T.Kadlecek, R.Kelmar, P.Scholz, A.Simon, E.Stech, F.Strieder, M.Wiescher

Direct measurement of the low-energy resonances in ²²Ne(α, γ)²⁶Mg reaction

NUCLEAR REACTIONS ²²Ne(α, γ), E=650, 830 keV; measured Eγ, Iγ, γ sum spectra; deduced resonances strength values at 830- and 650 keV. ²²Ne(p, γ), E=8510 keV; measured Eγ, Iγ, γ sum spectra; deduced resonance strength value at 851 keV. Beam energy uncertainty - 2 keV. Comparison to previous experimental data. HECTOR (High EffiCiency Total absorption spectrometeR (HECTOR)) array of 16 NaI(Tl) crystals at 1-MV JN positive ion accelerator CASPAR (Compact Accelerator System for Performing Astrophysical Research).

doi: 10.1103/PhysRevC.106.025805
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