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NSR database version of April 26, 2024.

Search: Author = T.N.Szegedi

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2023GY01      Phys.Rev. C 107, 025803 (2023)

Gy.Gyurky, P.Mohr, A.Angyal, Z.Halasz, G.G.Kiss, Zs.Matyus, T.N.Szegedi, T.Szucs, Zs.Fulop

Cross section measurement of the ¹⁴⁴Sm(α, n)¹⁴⁷Gd reaction for studying the α-nucleus optical potential at astrophysical energies

NUCLEAR REACTIONS ¹⁴⁴Sm(α, n)¹⁴⁷Gd, E=13-20 MeV; measured Eγ Iγ; deduced total σ(E), astrophysical S-factor, constraints on α-nucleus potential. ¹⁴⁴Sm(α, X), E=7.5-20 MeV; analyzed experimental information on σ, deduced contribution of different channels to the σ and S-factor. ¹⁴⁴Sm(α, γ), E=10-13 MeV; calculated S-factor, astrophysical reaction rate using derived optical model parameters. Activation method. Comparison with statistical model calculations, other experimental data and data from REACLIB AND STARLIB. Targets were irradiated at K20 cyclotron accelerator of Atomki and γ-rays from decay was measured by thin HPGe (LEPS).

doi: 10.1103/PhysRevC.107.025803
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2023TO07      Phys.Rev. C 108, 025802 (2023)

A.Toth, T.Szucs, T.N.Szegedi, Gy.Gyurky, Z.Halasz, G.G.Kiss, Zs.Fulop

Experimental determination of the ³He(α, γ)⁷Be reaction cross section above the ⁷Be proton separation threshold

NUCLEAR REACTIONS ³He(α, γ)⁷Be, E=11-20 Mev; measured Eγ, Iγ; deduced σ(E), possible resonance. Activation technique. R-matrix analysis. No prominent structures are observed around known ⁷Be level, but overall structure of the cross-section suggest a broad resonance peaking around E^*=7.5 MeV of ⁷Be excitation energy. Comparison to previous experimental data obtained with different methods and to the data obtained for mirror reaction ³H(α, γ)⁷Li. Thin-window gas-cell target irradiated at the Atomki MGC-20 cyclotron. Activated target measured with HPGe detector.

doi: 10.1103/PhysRevC.108.025802
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2022KI23      Astrophys.J. 936, 107 (2022)

G.G.Kiss, A.Vitez-Sveiczer, Y.Saito, A.Tarifeno-Saldivia, M.Pallas, J.L.Tain, I.Dillmann, J.Agramunt, A.Algora, C.Domingo-Pardo, A.Estrade, C.Appleton, J.M.Allmond, P.Aguilera, H.Baba, N.T.Brewer, C.Bruno, R.Caballero-Folch, F.Calvino, P.J.Coleman-Smith, G.Cortes, T.Davinson, N.Fukuda, Z.Ge, S.Go, C.J.Griffin, R.K.Grzywacz, O.Hall, A.Horvath, J.Ha, L.J.Harkness-Brennan, T.Isobe, D.Kahl, T.T.King, A.Korgul, S.Kovacs, R.Krucken, S.Kubono, M.Labiche, J.Liu, J.Liang, M.Madurga, K.Miernik, F.Molina, A.I.Morales, M.R.Mumpower, E.Nacher, A.Navarro, N.Nepal, S.Nishimura, M.Piersa-Silkowska, V.Phong, B.C.Rasco, B.Rubio, K.P.Rykaczewski, J.Romero-Barrientos, H.Sakurai, L.Sexton, Y.Shimizu, M.Singh, T.Sprouse, T.Sumikama, R.Surman, H.Suzuki, T.N.Szegedi, H.Takeda, A.Tolosa, K.Wang, M.Wolinska-Cichocka, P.Woods, R.Yokoyama, Z.Xu

Measuring the β-decay Properties of Neutron-rich Exotic Pm, Sm, Eu, and Gd Isotopes to Constrain the Nucleosynthesis Yields in the Rare-earth Region

NUCLEAR REACTIONS ⁹Be(²³⁸U, X), E=345 MeV/nucleon; measured reaction products, TOF, Eβ, Iβ. ^{159,160,161,162,163,164,165,166}Pm, ^{161,162,163,164,165,166,167,168}Sm, ^{165,166,167,168,169,170}Eu, ^{167,168,169,170,171,172}Gd; deduced new isotopes T_1/2 and β-delayed neutron emission probabilities, relative r-process abundance pattern for the neutron-star merger scenario. RIKEN Nishina Center, the Advanced Implantation Detector Array (AIDA) and the BRIKEN neutron detector array.

doi: 10.3847/1538-4357/ac80fc
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Data from this article have been entered in the XUNDL database. For more information, click here.

2021SZ02      Phys.Rev. C 104, 035804 (2021)

T.N.Szegedi, G.G.Kiss, P.Mohr, A.Psaltis, M.Jacobi, G.G.Barnafoldi, T.Szucs, Gy.Gyurky, A.Arcones

Activation thick target yield measurement of ¹⁰⁰Mo(α, n)¹⁰³Ru for studying the weak r-process nucleosynthesis

NUCLEAR REACTIONS ¹⁰⁰Mo(α, n)¹⁰³Ru, E=7.0-13.0 MeV; measured Eγ, Iγ, thick target σ(E) by activation technique at the Institute for Nuclear Research (Atomki); deduced recommended astrophysical rate at T₉=1.0-5.0, elemental abundances for the MC13 trajectory using α-nucleus optical model potentials (α-OMPs) with Atomki-V2 potential to model the nucleosynthesis scenario. ^95,97Ru, ⁹⁵Tc; observed γ rays in the spectrum.

doi: 10.1103/PhysRevC.104.035804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD4422.

2020SZ02      Eur.Phys.J. A 56, 182 (2020)

T.N.Szegedi, A.Toth, G.G.Kiss, Gy.Gyurky

High precision half-life measurement of ⁹⁵Ru, ⁹⁵Tc and ^95mTc with γ-spectroscopy

doi: 10.1140/epja/s10050-020-00188-8
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Data from this article have been entered in the XUNDL database. For more information, click here.

2019SZ01      Nucl.Phys. A986, 213 (2019)

T.N.Szegedi, G.G.Kiss, I.Oksuz, T.Szucs, Gy.Gyurky, Z.Elekes, E.Somorjai, Zs.Fulop

High precision half-life measurement of ¹²⁵Cs and ¹²⁵Xe with γ-spectroscopy

NUCLEAR REACTIONS ¹²⁴Xe(p, γ)¹²⁵Cs, E=6-7.5 MeV; measured off-line activation Eγ, Iγ(t) following the β-decay; deduced T_1/2. Compared with published results.

doi: 10.1016/j.nuclphysa.2019.04.002
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Data from this article have been entered in the XUNDL database. For more information, click here.

2019SZ02      Phys.Rev. C 99, 055804 (2019), Erratum Phys.Rev. C 105, 069901 (2022)

T.Szucs, G.G.Kiss, Gy.Gyurky, Z.Halasz, T.N.Szegedi, Zs.Fulop

Cross section of ³He(α, γ)⁷Be around the ⁷Be proton separation threshold

NUCLEAR REACTIONS ³He(α, γ)⁷Be, E=7.3-11.35 MeV; measured Eγ, Iγ, Eα, σ(E) using HPGe detector for offline γ spectroscopy. ³He(α, γ)⁷Be, E(cm)=0.2-5.0 MeV; analyzed data using constrained R-matrix fit; deduced S factors, asymptotic nuclear coefficients (ANCs), and upper limit on α-capture resonance strength using data from present experiment and previous experiments. Relevance to Big Bang nucleosynthesis and solar hydrogen burning.

doi: 10.1103/PhysRevC.99.055804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD4400.

2019SZ04      Phys.Rev. C 100, 065803 (2019)

T.Szucs, P.Mohr, Gy.Gyurky, Z.Halasz, R.Huszank, G.G.Kiss, T.N.Szegedi, Zs.Torok, Zs.Fulop

Cross section of α-induced reactions on ¹⁹⁷Au at sub-Coulomb energies

NUCLEAR REACTIONS ¹⁹⁷Au(α, 2n)¹⁹⁹Tl, E=17.48, 17.99, 18.49, 18.99, 19.46, 19.92 MeV; ¹⁹⁷Au(α, n)²⁰⁰Tl, E=13.62, 13.91, 14.92, 15.91, 16.96, 17.48, 17.99, 18.49, 18.99, 19.46, 19.92 MeV; ¹⁹⁷Au(α, γ)²⁰¹Tl, E=13.91, 14.92, 15.91, 16.96, 17.48, 17.99, 18.99, 19.46, 19.92 MeV; measured Eγ, Iγ, E(x ray), I(x ray), σ(E) by activation method at the MTA Atomki cyclotron in Debrecen; deduced Absolute x-ray intensities from the decays of ^199,200,201Tl. ¹⁹⁷Au(α, α'), E=24.7 MeV; measured σ(θ) and total σ. Comparison to the best fit statistical model calculation using the AVR A-OMP, and with previous experimental results. Prediction of cross sections in the Gamow window with smaller uncertainties. Relevance to determination of reaction rates in large-scale reaction networks for heavy-element nucleosynthesis.

doi: 10.1103/PhysRevC.100.065803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD4406.