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NSR database version of April 11, 2024.

Search: Author = M.Pignatari

Found 45 matches.

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2023HO07      Astrophys.J. 950, 133 (2023)

S.Q.Hou, J.B.Liu, T.C.L.Trueman, J.G.Li, M.Pignatari, C.A.Bertulani, X.X.Xu

New 26P(p, γ)27S Thermonuclear Reaction Rate and Its Astrophysical Implications in the rp-process

NUCLEAR REACTIONS 26P(p, γ), E<400 keV; analyzed available data; deduced direct, resonant, and total reaction rates, discrepancies with JINA REACLIB library.

doi: 10r3847/1538-4357/accf9c
Citations: PlumX Metrics


2023KE10      Astrophys.J.Suppl.Ser. 268, 8 (2023)

J.D.Keegans, M.Pignatari, R.J.Stancliffe, C.Travaglio, S.Jones, B.K.Gibson, D.M.Townsley, B.J.Miles, Ken J.Shen, G.Few

Type Ia Supernova Nucleosynthesis: Metallicity-dependent Yields

doi: 10.3847/1538-4365/ace102
Citations: PlumX Metrics


2023LA06      J.Phys.(London) G50, 033002 (2023)

A.M.Laird, M.Lugaro, A.Kankainen, P.Adsley, D.W.Bardayan, H.E.Brinkman, B.Cote, C.M.Deibel, R.Diehl, F.Hammache, J.W.den Hartogh, J.Jose, D.Kurtulgil, C.Lederer-Woods, G.Lotay, G.Meynet, S.Palmerini, M.Pignatari, R.Reifarth, N.de Sereville, A.Sieverding, R.J.Stancliffe, T.C.L.Trueman, T.Lawson, J.S.Vink, C.Massimi, A.Mengoni

Progress on nuclear reaction rates affecting the stellar production of 26Al

NUCLEAR REACTIONS 25Mg, 25,26Al(p, γ), 26Al(n, p), (n, α), 25Mg(α, n), 23Na(α, p), 24,25Mg(n, γ), E<300 KeV; analyzed available data; deduced σ, reaction rates, resonance parameters.

doi: 10.1088/1361-6471/ac9cf8
Citations: PlumX Metrics


2023LU02      Eur.Phys.J. A 59, 53 (2023)

M.Lugaro, M.Ek, M.Peto, M.Pignatari, G.V.Makhatadze, I.J.Onyett, M.Schonbachler

Representation of s-process abundances for comparison to data from bulk meteorites

doi: 10.1140/epja/s10050-023-00968-y
Citations: PlumX Metrics


2023PI08      Eur.Phys.J. A 59, 302 (2023)

M.Pignatari, R.Gallino, R.Reifarth

The s process in massive stars, a benchmark for neutron capture reaction rates

doi: 10.1140/epja/s10050-023-01206-1
Citations: PlumX Metrics


2022LU09      Universe 8, 343 (2022)

M.Lugaro, A.Yague Lopez, B.Soos, B.Cote, M.Peto, N.Vassh, B.Wehmeyer, M.Pignatari

Origin of Plutonium-244 in the Early Solar System

ATOMIC MASSES 127,129In, 235,238U, 244Pu, 247Cm; calculated ratios of abundances of 129I/127I, 129I/247Cm, 244Pu/238U, and 247Cm/235U produced as short-lived radionucldies (SLRs) in r-process, and present in the early Solar System (ESS) using nuclear network code WINNET with 63 different models, and the nucleosynthesis network PRISM with 14 different models, with detailed results listed in the Supplementary Materials of the paper. 244Pu; discussed different possibilities, solutions, and derived time intervals for the presence of this isotope in early Solar System.

doi: 10.3390/universe8070343
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2022SC17      J.Phys.(London) G49, 110502 (2022)

H.Schatz, A.D.Becerril Reyes, A.Best, E.F.Brown, K.Chatziioannou, K.A.Chipps, C.M.Deibel, R.Ezzeddine, D.K.Galloway, C.J.Hansen, F.Herwig, A.P.Ji, M.Lugaro, Z.Meisel, D.Norman, J.S.Read, L.F.Roberts, A.Spyrou, I.Tews, F.X.Timmes, C.Travaglio, N.Vassh, C.Abia, P.Adsley, S.Agarwal, M.Aliotta, W.Aoki, A.Arcones, A.Aryan, A.Bandyopadhyay, A.Banu, D.W.Bardayan, J.Barnes, A.Bauswein, T.C.Beers, J.Bishop, T.Boztepe, B.Cote, M.E.Caplan, A.E.Champagne, J.A.Clark, M.Couder, A.Couture, S.E.de Mink, S.Debnath, R.J.deBoer, J.den Hartogh, P.Denissenkov, V.Dexheimer, I.Dillmann, J.E.Escher, M.A.Famiano, R.Farmer, R.Fisher, C.Frohlich, A.Frebel, C.Fryer, G.Fuller, A.K.Ganguly, S.Ghosh, B.K.Gibson, T.Gorda, K.N.Gourgouliatos, V.Graber, M.Gupta, W.C.Haxton, A.Heger, W.R.Hix, W.C.G.Ho, E.M.Holmbeck, A.A.Hood, S.Huth, G.Imbriani, R.G.Izzard, R.Jain, H.Jayatissa, Z.Johnston, T.Kajino, A.Kankainen, G.G.Kiss, A.Kwiatkowski, M.La Cognata, A.M.Laird, L.Lamia, P.Landry, E.Laplace, K.D.Launey, D.Leahy, G.Leckenby, A.Lennarz, B.Longfellow, A.E.Lovell, W.G.Lynch, S.M.Lyons, K.Maeda, E.Masha, C.Matei, J.Merc, B.Messer, F.Montes, A.Mukherjee, M.R.Mumpower, D.Neto, B.Nevins, W.G.Newton, L.Q.Nguyen, K.Nishikawa, N.Nishimura, F.M.Nunes, E.O'Connor, B.W.O'Shea, W.-J.Ong, S.D.Pain, M.A.Pajkos, M.Pignatari, R.G.Pizzone, V.M.Placco, T.Plewa, B.Pritychenko, A.Psaltis, D.Puentes, Y.-Z.Qian, D.Radice, D.Rapagnani, B.M.Rebeiro, R.Reifarth, A.L.Richard, N.Rijal, I.U.Roederer, J.S.Rojo, J.S K, Y.Saito, A.Schwenk, M.L.Sergi, R.S.Sidhu, A.Simon, T.Sivarani, A.Skuladottir, M.S.Smith, A.Spiridon, T.M.Sprouse, S.Starrfield, A.W.Steiner, F.Strieder, I.Sultana, R.Surman, T.Szucs, A.Tawfik, F.Thielemann, L.Trache, R.Trappitsch, M.B.Tsang, A.Tumino, S.Upadhyayula, J.O.Valle Martinez, M.Van der Swaelmen, C.Viscasillas Vazquez, A.Watts, B.Wehmeyer, M.Wiescher, C.Wrede, J.Yoon, R.G.T.Zegers, M.A.Zermane, M.Zingale, the Horizon 2020 Collaborations

Horizons: nuclear astrophysics in the 2020s and beyond

doi: https://dx.doi.org/10.1088/1361-6471/ac8890
Citations: PlumX Metrics


2021HU13      Astrophys.J. 912, 59 (2021)

N.J.Hubbard, C.Aa.Diget, S.P.Fox, H.O.U.Fynbo, A.M.Howard, O.S.Kirsebom, A.M.Laird, M.Munch, A.Parikh, M.Pignatari, J.R.Tomlinson

New Experimental 23Na(α, p)26Mg Reaction Rate for Massive Star and Type Ia Supernova Models

NUCLEAR REACTIONS 23Na(α, p), E(cm)=1-3.25 MeV; analyzed available data; deduced astrophysical reaction rates, angle integrated σ.

doi: 10.3847/1538-4357/abee91
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2021OT02      Phys.Rev. C 104, 055806 (2021)

S.Ota, G.Christian, W.N.Catford, G.Lotay, M.Pignatari, U.Battino, E.A.Bennett, S.Dede, D.T.Doherty, S.Hallam, F.Herwig, J.Hooker, C.Hunt, H.Jayatissa, A.Matta, M.Moukaddam, E.Rao, G.V.Rogachev, A.Saastamoinen, D.Scriven, J.A.Tostevin, S.Upadhyayula, R.Wilkinson

(6Li, d) and (6Li, t) reactions on 22Ne and implications for s-process nucleosynthesis

NUCLEAR REACTIONS 6Li(22Ne, d)26Mg, 6Li(22Na, t)25Mg, E=154 MeV; 2H(22Ne, p)23Ne, E not given; measured reaction products, E(d), I(d), E(p), I(p), Eγ, Iγ, 26Mg and 25Mg recoils, (26Mg)γ-coin, (25Mg)γ-coin, (particle)(particle)-coin, σ(θ) using TIARA Si detector array of two sets of Si detectors, 'Hyball' and 'Barrel', MDM high-resolution and broad range magnetic spectrometer, and array of four HPGe detectors at the K150 cyclotron of Texas A and M University. 23Ne, 25Mg, 26Mg; deduced levels, J, π, resonances, resonances in the Gamow window of 22Ne(α, n)25Mg reaction, spectroscopic factors, α-spectroscopic factors for 26Mg, resonance strengths, impact of 22Ne+α resonances on s-process nucleosynthesis; comparison of σ(θ) data with DWBA calculations using FRESCO code. Comparison with previous experimental results. 22Ne(α, n), (α, γ); calculated s-process overproduction factors in stars 3 and 5 times the mass of the sun for A=60-210 isotopes.

doi: 10.1103/PhysRevC.104.055806
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021YA29      Astrophys.J. 919, 84 (2021)

S.Q.Yan, X.Y.Li, K.Nishio, M.Lugaro, Z.H.Li, H.Makii, M.Pignatari, Y.B.Wang, R.Orlandi, K.Hirose

The 59Fe(n, γ)60Fe Cross Section from the Surrogate Ratio Method and Its Effect on the 60Fe Nucleosynthesis

NUCLEAR REACTIONS 56,58Fe(18O, 16O), E=103 MeV; measured reaction products, Eγ, Iγ; deduced σ, Maxwellian-averaged σ. Comparison with TALYS calculations.

doi: 10.3847/1538-4357/ac12ce
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset32857.


2020ME09      Phys.Rev. C 102, 035803 (2020)

A.Meyer, N.de Sereville, A.M.Laird, F.Hammache, R.Longland, T.Lawson, M.Pignatari, L.Audouin, D.Beaumel, S.Fortier, J.Kiener, A.Lefebvre-Schuhl, M.G.Pellegriti, M.Stanoiu, V.Tatischeff

Evaluation of the 13N(α, p)16O thermonuclear reaction rate and its impact on the isotopic composition of supernova grains

NUCLEAR REACTIONS 13C(7Li, t)17O*, E=34 MeV; measured E(t), I(t), σ(θ) using Enge Split-Pole magnetic spectrometer at the Tandem-ALTO facility in Orsay. 17O; deduced levels, resonances, J, π, L-transfers from analysis of angular distributions with finite-range distorted wave Born approximation (DWBA) calculations, Γα, α-spectroscopic factors, and compared with previous experimental data, and evaluated data in the ENSDF database. 17O, 17F; comparison of levels resonances, spin-parities, and resonance parameters in mirror nuclei. 13N(α, p)16O, E(cm)=0.05-3.0 MeV; deduced astrophysical S-factor by R-matrix calculations using AZURE2 code, Monte-Carlo reaction rates from 0.01-10 GK, isotopic abundances in the He-shell ejecta of a supernova model, production factors of stable isotopes, in the mass region between 12C and 50V.

doi: 10.1103/PhysRevC.102.035803
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Data from this article have been entered in the XUNDL database. For more information, click here.


2020RI06      Phys.Rev. C 102, 025801 (2020)

W.A.Richter, B.A.Brown, R.Longland, C.Wrede, P.Denissenkov, C.Fry, F.Herwig, D.Kurtulgil, M.Pignatari, R.Reifarth

Shell-model studies of the astrophysical rp-process reactions 34S(p, γ)35Cl and 34g, mCl(p, γ)35Ar

NUCLEAR REACTIONS 34S(3He, d)35Cl, E=20 MeV; calculated spectroscopic factors for levels in 35Cl up to 7.4 MeV using shell model, and compared with experimental values. 34S(p, γ)35Cl, 34,34mCl(p, γ)35Ar, E not given; calculated levels, resonances, J, π, spectroscopic factors, Γp, Γγ, resonance strengths, thermonuclear reaction rates; discussed impact on predicted 34S/32S isotopic ratio for presolar nova grains. Comparison with experimental data. Shell-model approach, with uncertainties estimated using a Monte Carlo method.

doi: 10.1103/PhysRevC.102.025801
Citations: PlumX Metrics


2019TA20      Phys.Lett. B 798, 134894 (2019)

M.P.Taggart, C.Akers, A.M.Laird, U.Hager, C.Ruiz, D.A.Hutcheon, M.A.Bentley, J.R.Brown, L.Buchmann, A.A.Chen, J.Chen, K.A.Chipps, A.Choplin, J.M.D'Auria, B.Davids, C.Davis, C.Aa.Diget, L.Erikson, J.Fallis, S.P.Fox, U.Frischknecht, B.R.Fulton, N.Galinski, U.Greife, R.Hirschi, D.Howell, L.Martin, D.Mountford, A.St.J.Murphy, D.Ottewell, M.Pignatari, S.Reeve, G.Ruprecht, S.Sjue, L.Veloce, M.Williams

A direct measurement of the 17O(α, γ)21Ne reaction in inverse kinematics and its impact on heavy element production

NUCLEAR REACTIONS 4He(17O, γ)21Ne, E=160, 202, 290, 360 keV/nucleon; measured reaction products, Eγ, Iγ; deduced resonance strengths, S-factors, astrophysical reaction rates.

doi: 10.1016/j.physletb.2019.134894
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2420. Data from this article have been entered in the XUNDL database. For more information, click here.


2018DE16      J.Phys.(London) G45, 055203 (2018)

P.Denissenkov, G.Perdikakis, F.Herwig, H.Schatz, C.Ritter, M.Pignatari, S.Jones, S.Nikas, A.Spyrou

The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs

NUCLEAR REACTIONS 87,88,89Kr, 85,86Br, 89Rb, 89,92Sr(n, γ), E ∼ 30 keV; calculated mass fractions, astrophysical abundances of Rb, Sr, Y and Zr; deduced an impact of the uncertainties in the (n, γ) reaction rates on Monte Carlo simulation.

doi: 10.1088/1361-6471/aabb6e
Citations: PlumX Metrics


2017DE26      Rev.Mod.Phys. 89, 035007 (2017)

R.J.deBoer, J.Gorres, M.Wiescher, R.E.Azuma, A.Best, C.R.Brune, C.E.Fields, S.Jones, M.Pignatari, D.Sayre, K.Smith, F.X.Timmes, E.Uberseder

The 12C(α, γ)16O reaction and its implications for stellar helium burning

NUCLEAR REACTIONS 12C(α, γ)16O, E(cm)<6 MeV; analyzed available data; deduced σ, reaction rates and uncertainties.

doi: 10.1103/RevModPhys.89.035007
Citations: PlumX Metrics


2017LI18      Astrophys.J. 842, L1 (2017)

N.Liu, L.R.Nittler, M.Pignatari, C.M.O'D.Alexander, J.Wang

Stellar Origin of 15N-rich Presolar SiC Grains of Type AB: Supernovae with Explosive Hydrogen Burning

doi: 10.3847/2041-8213/aa74e5
Citations: PlumX Metrics


2017MA15      Phys.Lett. B 768, 1 (2017)

C.Massimi, S.Altstadt, J.Andrzejewski, L.Audouin, M.Barbagallo, V.Becares, F.Becvar, F.Belloni, E.Berthoumieux, J.Billowes, S.Bisterzo, D.Bosnar, M.Brugger, M.Calviani, F.Calvino, D.Cano-Ott, C.Carrapico, D.M.Castelluccio, F.Cerutti, E.Chiaveri, L.Cosentino, M.Chin, G.Clai, N.Colonna, G.Cortes, M.A.Cortes-Giraldo, S.Cristallo, M.Diakaki, C.Domingo-Pardo, I.Duran, R.Dressler, C.Eleftheriadis, A.Ferrari, P.Finocchiaro, K.Fraval, S.Ganesan, A.R.Garcia, G.Giubrone, I.F.Goncalves, E.Gonzalez-Romero, E.Griesmayer, C.Guerrero, F.Gunsing, A.Hernandez-Prieto, D.G.Jenkins, E.Jericha, Y.Kadi, F.Kappeler, D.Karadimos, N.Kivel, P.Koehler, M.Kokkoris, S.Kopecky, M.Krticka, J.Kroll, C.Lampoudis, C.Langer, E.Leal-Cidoncha, C.Lederer, H.Leeb, L.S.Leong, S.Lo Meo, R.Losito, A.Mallick, A.Manousos, J.Marganiec, T.Martinez, P.F.Mastinu, M.Mastromarco, E.Mendoza, A.Mengoni, P.M.Milazzo, F.Mingrone, M.Mirea, W.Mondelaers, A.Musumarra, C.Paradela, A.Pavlik, J.Perkowski, M.Pignatari, L.Piersanti, A.Plompen, J.Praena, J.M.Quesada, T.Rauscher, R.Reifarth, A.Riego, M.S.Robles, C.Rubbia, M.Sabate-Gilarte, R.Sarmento, A.Saxena, P.Schillebeeckx, S.Schmidt, D.Schumann, G.Tagliente, J.L.Tain, D.Tarrio, L.Tassan-Got, A.Tsinganis, S.Valenta, G.Vannini, I.Van Rijs, V.Variale, P.Vaz, A.Ventura, M.J.Vermeulen, V.Vlachoudis, R.Vlastou, A.Wallner, T.Ware, M.Weigand, C.Weiss, R.Wynants, T.Wright, P.Zugec

Neutron spectroscopy of 26Mg states: Constraining the stellar neutron source 22Ne(α, n)25Mg

NUCLEAR REACTIONS 25Mg(n, γ), (n, X), E<300 KeV; measured reaction products, En, In, Eγ, Iγ; deduced yields, σ, resonance parameters and corresponding excitation energies of the 26Mg compound nucleus, Maxwellian-averaged cross sections, reaction rates for inverse reactions. R-matrix analysis of the experimental data.

doi: 10.1016/j.physletb.2017.02.025
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23327. Data from this article have been entered in the XUNDL database. For more information, click here.


2017PI16      Geochim.Cosmochim.Act. 221, 37 (2017)

M.Pignatari, P.Hoppe, R.Trappitsch, C.Fryer, F.X.Timmes, F.Herwig, R.Hirschi

The neutron capture process in the He shell in core-collapse supernovae: Presolar silicon carbide grains as a diagnostic tool for nuclear astrophysics

ATOMIC MASSES 90,96Zr, 90Sr, 95,96,97,100Mo; analyzed isotopic abundances in carbon-rich presolar grains; deduced parameters of supernova models.

doi: 10.1016/j.gca.2017.06.005
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2017UB01      Phys.Rev. C 95, 025803 (2017)

E.Uberseder, M.Heil, F.Kappeler, C.Lederer, A.Mengoni, S.Bisterzo, M.Pignatari, M.Wiescher

Stellar (n, γ) cross sections of 23Na

NUCLEAR REACTIONS 23Na(n, γ)24Na, E=quasistellar thermal neutrons with kT=5.1-25 keV; measured neutron spectra, Eγ, Iγ, Maxwellian averaged σ(E) (MACS) by activation method using NaCl target at Karlsruhe Van de Graaff accelerator; σ(E) analyzed by R-matrix method using SAMMY code. Comparison with ENDF/B-VII.1 evaluation. Calculated relative s-abundance distribution at the end of C-shell burning with the MACS of 23Na from the KADONIS database compilation, ratio of s-process yields.

doi: 10.1103/PhysRevC.95.025803
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23337.


2017WA27      Phys.Rev. C 96, 025808 (2017)

A.Wallner, K.Buczak, T.Belgya, M.Bichler, L.Coquard, I.Dillmann, R.Golser, F.Kappeler, A.Karakas, W.Kutschera, C.Lederer, A.Mengoni, M.Pignatari, A.Priller, R.Reifarth, P.Steier, L.Szentmiklosi

Precise measurement of the thermal and stellar 54Fe (n, γ) cross sections via accelerator mass spectrometry

NUCLEAR REACTIONS 54Fe(n, γ), E=cold to 100 keV; measured 55Fe concentration using accelerator mass spectrometry (AMS) technique at the Vienna Environmental Research Accelerator (VERA) laboratory; deduced σ(E), Maxwellian-averaged cross sections (MACS) between 5-100 keV, 55Fe/56Fe ratios. Comparison with previous measurements, and with evaluated data libraries ENDF/B-VII.1, JENDL-4.0, and JEFF-3.2. Impact of the improved cross sections for neutron capture nucleosynthesis for the AGB stars.

doi: 10.1103/PhysRevC.96.025808
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23047.


2016HE06      Phys.Rev. C 93, 055807 (2016)

M.Heil, R.Plag, E.Uberseder, S.Bisterzo, F.Kappeler, A.Mengoni, M.Pignatari

Stellar neutron capture cross sections of 41K and 45Sc

NUCLEAR REACTIONS 45Sc, 41K(n, γ), kT=25 keV; measured Eγ, Iγ, capture cross section by activation method at Karlsruhe 3.7-MV Van de Graaff accelerator facility; deduced Maxwellian averaged cross sections (MACS) for the s-process nucleosynthesis yields in AGB stars and in massive stars. Comparison with previous experimental values and evaluated libraries JEFF-3.2, JENDL-4.0 and ENDF/B-VII.1. Discussed effect of neutron poisons in s-process scenario.

doi: 10.1103/PhysRevC.93.055807
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23306.


2016KO01      At.Data Nucl.Data Tables 108, 1 (2016)

A.Koloczek, B.Thomas, J.Glorius, R.Plag, M.Pignatari, R.Reifarth, C.Ritter, S.Schmidt, K.Sonnabend

Sensitivity study for s process nucleosynthesis in AGB stars

COMPILATION 13C, 80,82,83,84,86Kr; analyzed reaction rates in the main component of the s process; deduced 22 rates, which have the highest impact on the s-process abundances in AGB stars.

doi: 10.1016/j.adt.2015.12.001
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2016MO23      Astrophys.J. 827, 29 (2016)

P.Mohr, C.Heinz, M.Pignatari, I.Dillmann, A.Mengoni, F.Kappeler

Re-evaluation of the 16O(N, γ)17O Cross Section at Astrophysical Energies and Its Role as a Neutron Poison in the s-process

NUCLEAR REACTIONS 16O(n, γ), E<700 KeV; analyzed available experimental data from KADoNiS and REACLIB, ENDF/B-VII.1, JEFF-3.2, JENDL-4.0 evaluated libraries; deduced Maxwellian-averaged σ, reaction rates.

doi: 10.3847/0004-637X/827/1/29
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2016PI06      Int.J.Mod.Phys. E25, 1630003 (2016)

M.Pignatari, K.Gobel, R.Reifarth, C.Travaglio

The production of proton-rich isotopes beyond iron: The γ-process in stars

doi: 10.1142/S0218301316300034
Citations: PlumX Metrics


2016TA09      Phys.Rev. C 93, 055803 (2016)

R.Talwar, T.Adachi, G.P.A.Berg, L.Bin, S.Bisterzo, M.Couder, R.J.deBoer, X.Fang, H.Fujita, Y.Fujita, J.Gorres, K.Hatanaka, T.Itoh, T.Kadoya, A.Long, K.Miki, D.Patel, M.Pignatari, Y.Shimbara, A.Tamii, M.Wiescher, T.Yamamoto, M.Yosoi

Probing astrophysically important states in the 26Mg nucleus to study neutron sources for the s process

NUCLEAR REACTIONS 26Mg(α, α'), E=206 MeV; 22Ne(6Li, d)26Mg, E=82.3 MeV; measured Eα, Iα, E(d), I(d), σ(θ) using Grand Raiden (GR) spectrometer at RCNP-Osaka. 26Mg; deduced α-unbound resonance energies, levels, J, π, α-spectroscopic factors, resonance strengths. Angular distributions for inelastic scattering analyzed by coupled channel code PTOLEMY and for transfer reactions by FRESCO code. 22Ne(α, γ)26Mg, 22Ne(α, n)25Mg, T9=0.01-10; deduced astrophysical reaction rates from resonance parameters. Comparison with previous results. Relevance to slow neutron capture process (s process) in massive stars.

doi: 10.1103/PhysRevC.93.055803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetE2514. Data from this article have been entered in the XUNDL database. For more information, click here.


2015BU08      Phys.Rev.Lett. 114, 251102 (2015)

B.Bucher, X.D.Tang, X.Fang, A.Heger, S.Almaraz-Calderon, A.Alongi, A.D.Ayangeakaa, M.Beard, A.Best, J.Browne, C.Cahillane, M.Couder, R.J.deBoer, A.Kontos, L.Lamm, Y.J.Li, A.Long, W.Lu, S.Lyons, M.Notani, D.Patel, N.Paul, M.Pignatari, A.Roberts, D.Robertson, K.Smith, E.Stech, R.Talwar, W.P.Tan, M.Wiescher, S.E.Woosley

First Direct Measurement of 12C(12C, n)23Mg at Stellar Energies

NUCLEAR REACTIONS 12C(12C, n), E=7.5, 9.5 MeV; measured reaction products, Eγ, Iγ, En, In; deduced yields, S-factors, astrophysical reaction rate. Comparison with available data.

doi: 10.1103/PhysRevLett.114.251102
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2168.


2014HE25      Phys.Rev. C 90, 045804 (2014); Erratum Phys.Rev. C 92, 019902 (2015)

M.Heil, R.Plag, E.Uberseder, R.Gallino, S.Bisterzo, A.Juseviciute, F.Kappeler, C.Lederer, A.Mengoni, M.Pignatari

Stellar neutron capture cross sections of 20, 21, 22Ne

NUCLEAR REACTIONS 20,21,22Ne(n, γ), E=5-800 keV; measured transmission data, σ(E) via prompt γ-ray cascades, and using the TOF technique at the Karlsruhe Van de Graaff accelerator. 21,22,23Ne; deduced energies of neutron resonances, resonance parameters, widths, capture kernels, stellar cross sections (MACS) at kT=30 keV, relative s-abundance distributions. R-matrix analysis using SAMMY code. Comparison with previous experimental results and data in KADONIS database. Discussed 22Ne and 20Ne as significant neutron poisons for the s process in stars.

doi: 10.1103/PhysRevC.90.045804
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23265. Data from this article have been entered in the XUNDL database. For more information, click here.


2014PR07      Nucl.Data Sheets 120, 205 (2014)

J.Praena, P.F.Mastinu, M.Pignatari, J.M.Quesada, R.Capote, Y.Morilla

Measurement of the MACS of 159Tb(n, γ) at kT=30 keV by Activation

NUCLEAR REACTIONS 159Tb(n, γ), E=30 keV; measured reaction products, Eγ, Iγ.; deduced Maxwellian-averaged σ. Comparison with available data, ENDF/B-VII.1 and KADoNiS libraries.

doi: 10.1016/j.nds.2014.07.047
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23249.


2013BE11      Phys.Rev. C 87, 045805 (2013)

A.Best, M.Beard, J.Gorres, M.Couder, R.deBoer, S.Falahat, R.T.Guray, A.Kontos, K.-L.Kratz, P.J.LeBlanc, Q.Li, S.O'Brien, N.Ozkan, M.Pignatari, K.Sonnabend, R.Talwar, W.Tan, E.Uberseder, M.Wiescher

Measurement of the reaction 17O(α, n)20Ne and its impact on the s process in massive stars

NUCLEAR REACTIONS 17O(α, n), E=800-2300 keV; measured Eγ, Iγ, E(n), I(n), yields as function of incident Eα for (α, n0) and (α, n1) channels; deduced R-matrix parameters, S factors, reaction rates. 21Ne; deduced levels, resonances, J, π, width, resonance strengths. R-matrix analyses. 17O(α, n), (α, γ), E at 0.1 to 10 GK; comparison of experimental and theoretical (NACRE, CF88/1000) reaction rates. Hauser-Feshbach theory. Astrophysical implications for the s-process, and elemental abundance.

doi: 10.1103/PhysRevC.87.045805
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2013PR06      Nucl.Instrum.Methods Phys.Res. A727, 1 (2013)

J.Praena, P.F.Mastinu, M.Pignatari, J.M.Quesada, J.Garcia-Lopez, M.Lozano, N.Dzysiuk, R.Capote, G.Martin-Hernandez

Measurement of the MACS of 181Ta(n, γ) at kT=30 KeV as a test of a method for Maxwellian neutron spectra generation

NUCLEAR REACTIONS 181Ta, 197Au(n, γ), E<120 keV; measured reaction products, Eγ, Iγ; deduced Maxwellian-averaged σ. Comparison with experimental results, ENDF libraries.

doi: 10.1016/j.nima.2013.05.151
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23200.


2012DR08      J.Phys.(London) G39, 105201 (2012)

R.Dressler, M.Ayranov, D.Bemmerer, M.Bunka, Y.Dai, C.Lederer, J.Fallis, A.StJ.Murphy, M.Pignatari, D.Schumann, T.Stora, T.Stowasser, F.-K.Thielemann, P.J.Woods

44Ti, 26Al and 53Mn samples for nuclear astrophysics: the needs, the possibilities and the sources

doi: 10.1088/0954-3899/39/10/105201
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2012MA29      Appl.Radiat.Isot. 70, 1583 (2012)

G.Martin-Hernandez, P.F.Mastinu, J.Praena, N.Dzysiuk, R.Capote Noy, M.Pignatari

Temperature-tuned Maxwell-Boltzmann neutron spectra for kT ranging from 30 up to 50 keV for nuclear astrophysics studies

NUCLEAR REACTIONS 82Se(n, γ), E<100 keV; calculated Maxwellian-averaged σ and their uncertainties, stellar neutron spectra, σ(E). Comparison with available data.

doi: 10.1016/j.apradiso.2012.05.004
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2010BE40      J.Phys.:Conf.Ser. 202, 012023 (2010)

M.E.Bennett, R.Hirschi, M.Pignatari, S.Diehl, C.Fryer, F.Herwig, A.Hungerford, G.Magkotsios, G.Rockefeller, F.Timmes, M.Wiescher, P.Young

The effect of 12C + 12C rate uncertainties on s-process yields

NUCLEAR REACTIONS 12C(12C, p), (12C, α), E≈50-100 keV;23Na(p, α), E≈50-100 keV; calculated 12C burning rates. A≈12-96 calculated isotope yields based on these burning rates in massive stars for s-process.

doi: 10.1088/1742-6596/202/1/012023
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2010PI15      Astrophys.J. 710, 1557 (2010)

M.Pignatari, R.Gallino, M.Heil, M.Wiescher, F.Kappeler, F.Herwig, S.Bisterzo

The Weak s-Process in Massive Stars and its Dependence on the Neutron Capture Cross Sections

NUCLEAR REACTIONS 74Ge, 75As, 78Se, 36S, 80Kr(n, γ), E ∼ 30 keV; analyzed available data; deduced Maxwellian averaged σ.

doi: 10.1088/0004-637x/710/2/1557
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2009MA35      Phys.Rev. C 79, 065802 (2009)

J.Marganiec, I.Dillmann, C.Domingo Pardo, F.Kappeler, R.Reifarth, R.Gallino, M.Pignatari, P.Grabmayr

Neutron capture cross sections of 74Ge, 76Ge, and 75As at 25 keV

NUCLEAR REACTIONS 74,76Ge, 75As(n, γ), E<106 keV; measured Eγ, Iγ, σ; deduced Maxwellian averaged σ for thermal energies from 5 to 100 keV. Neutrons from 7Li(p, n), E=1912 keV reaction. 197Au(n, γ), E<106 keV; measured σ and used as a standard. Estimated background contributions for γ-ray studies of double β decay of 76Ge.

doi: 10.1103/PhysRevC.79.065802
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14237.


2009UB01      Phys.Rev.Lett. 102, 151101 (2009)

E.Uberseder, R.Reifarth, D.Schumann, I.Dillmann, C.Domingo Pardo, J.Gorres, M.Heil, F.Kappeler, J.Marganiec, J.Neuhausen, M.Pignatari, F.Voss, S.Walter, M.Wiescher

Measurement of the 60Fe(n, γ)61Fe Cross Section at Stellar Temperatures

NUCLEAR REACTIONS 60Fe(n, γ), E=25-100 keV; measured reaction products, Eγ, Iγ; deduced Maxwellian-averaged σ and its uncertainties. Comparison with stellar models and NACRE data.

doi: 10.1103/PhysRevLett.102.151101
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14228.


2008HE01      Phys.Rev. C 77, 015808 (2008)

M.Heil, F.Kappeler, E.Uberseder, R.Gallino, M.Pignatari

Neutron capture cross sections for the weak s process in massive stars

NUCLEAR REACTIONS 58Fe, 59Co, 64Ni, 63,65Cu(n, γ), E=25 keV; measured neutron capture cross sections, Eγ; 59Fe, 60Co, 65Ni, 64,66Cu, 198Au; deduced nucleosynthesis yields in stars.

doi: 10.1103/PhysRevC.77.015808
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22996.


2008HE10      Phys.Rev. C 78, 025802 (2008)

M.Heil, F.Kappeler, E.Uberseder, R.Gallino, S.Bisterzo, M.Pignatari

Stellar (n, γ) cross sections for Br and Rb: Matching the weak and main s-process components

NUCLEAR REACTIONS 79,81Br, 85,87Rb(n, γ), E=0-120 keV; measured Eγ, Iγ, σ. 78,80,82Se, 79,81Br, 80,82,83,84,86Kr; 85,87Rb, 86,87,88Sr, 89Y, 90Zr; deduced total s-process abundances.

doi: 10.1103/PhysRevC.78.025802
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23035.


2008ST11      Phys.Rev. C 77, 055801 (2008)

E.Strandberg, M.Beard, M.Couder, A.Couture, S.Falahat, J.Gorres, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.Stech, W.P.Tan, C.Ugalde, M.Wiescher, H.Costantini, K.Scheller, M.Pignatari, R.Azuma, L.Buchmann

24Mg(α, γ)28Si resonance parameters at low alpha-particle energies

NUCLEAR REACTIONS 24Mg(α, γ), E=1.0-1.5 MeV; measured Eγ, Iγ, γγ-coin, branching ratios, resonance strengths. 28Si; deduced levels, J, π, reaction rates. 13C, 17O, 21,22Ne, 25Mg(α, n); 16O, 20Ne(α, γ); 23Na, 24Mg, 27Al(p, γ); 23Na, 24Mg, 27Al, 28Si(n, γ); 25Al(γ, p); 27Al(p, α); analyzed reaction rates.

doi: 10.1103/PhysRevC.77.055801
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2007HE14      Prog.Part.Nucl.Phys. 59, 174 (2007)

M.Heil, F.Kappeler, E.Uberseder, R.Gallino, M.Pignatari

The s process in massive stars

doi: 10.1016/j.ppnp.2006.12.013
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2006WI11      Phys.Rev. C 73, 045807 (2006)

K.Wisshak, F.Voss, F.Kappeler, L.Kazakov, F.Becvar, M.Krticka, R.Gallino, M.Pignatari

Fast neutron capture on the Hf isotopes: Cross sections, isomer production, and stellar aspects

NUCLEAR REACTIONS 176,177,178,179,180Hf(n, γ), E=3-225 keV; measured Eγ, Iγ, capture σ; deduced Maxwellian-averaged σ. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.73.045807
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22926.


2006WI20      Astrophys.J. 647, 685 (2006)

N.Winckler, S.Dababneh, M.Heil, F.Kappeler, R.Gallino, M.Pignatari

Lanthanum: An s- and r-Process Indicator

NUCLEAR REACTIONS 139La(n, γ), E=5.1 keV; measured reaction products, Eγ, Iγ; deduced Maxwellian-averaged σ and its uncertainties.

doi: 10.1086/505026
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2005BI19      Nucl.Phys. A758, 284c (2005)

S.Bisterzo, L.Pompeia, R.Gallino, M.Pignatari, K.Cunha, A.Heger, V.Smith

Cu and Zn in different stellar populations: Inferring their astrophysical origin

doi: 10.1016/j.nuclphysa.2005.05.049
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2005PI19      Nucl.Phys. A758, 541c (2005)

M.Pignatari, R.Gallino, F.Kappeler, M.Wiescher

Effects of uncertainties of the 22Ne(α, n)25Mg and 13C(α, n)16O reaction rates in the s-process yields

NUCLEAR REACTIONS 13C, 22Ne(α, n), E=low; analyzed astrophysical reaction rates.

doi: 10.1016/j.nuclphysa.2005.05.098
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2003OB03      Phys.Rev. C 68, 035801 (2003)

S.O'Brien, S.Dababneh, M.Heil, F.Kappeler, R.Plag, R.Reifarth, R.Gallino, M.Pignatari

Neutron capture cross section of 139La

NUCLEAR REACTIONS 139La(n, γ), E=spectrum; measured capture σ; deduced Maxwellian-averaged capture σ. Activation technique. Astrophysical implications discussed.

doi: 10.1103/PhysRevC.68.035801
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22879.


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