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NSR database version of April 11, 2024.

Search: Author = C.Ugalde

Found 33 matches.

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2023JA08      Phys.Rev.Lett. 845, 112701 (2023)

H.Jayatissa, M.L.Avila, K.E.Rehm, P.Mohr, Z.Meisel, J.Chen, C.R.Hoffman, J.Liang, C.Muller-Gatermann, D.Neto, W.J.Ong, A.Psaltis, D.Santiago-Gonzalez, T.L.Tang, C.Ugalde, G.Wilson

Study of the 22Mg Waiting Point Relevant for X-Ray Burst Nucleosynthesis via the 22Mg(α, p)25Al Reaction

NUCLEAR REACTIONS 4He(22Mg, p), E=74 MeV; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with calculations. MUlti-Sampling Ionization Chamber (MUSIC) detector, the Argonne Tandem Linac Accelerator System (ATLAS) at Argonne National Laboratory.

doi: 10.1103/PhysRevLett.131.112701
Citations: PlumX Metrics


2023NE04      Phys.Rev. C 107, 035801 (2023)

D.Neto, K.Bailey, J.F.Benesch, B.Cade, B.DiGiovine, A.Freyberger, J.M.Grames, A.Hofler, R.J.Holt, R.Kazimi, D.Meekins, M.McCaughan, D.Moser, T.O'Connor, M.Poelker, K.E.Rehm, S.Riordan, R.Suleiman, R.Talwar, C.Ugalde

Measuring the cross section of the 15N(α, γ)19F reaction using a single-fluid bubble chamber

NUCLEAR REACTIONS 19F(γ, α)15N, E=4.0-5.4 MeV bremsstrahlung beam; measured reaction products; deduced yields, excitation functions, σ(E). 15N(α, γ)19F, E=4.7-5.4; deduced σ(E) using reciprocity theorem. Comparison to other experimental data. Single-fluid bubble chamber filled with C3F8 superheated liquid at the Thomas Jefferson National Accelerator Facility.

doi: 10.1103/PhysRevC.107.035801
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2019LO07      Phys.Rev. C 99, 065805 (2019)

B.Loseth, R.Fang, D.Frisbie, K.Parzuchowski, C.Ugalde, J.Wenzl, J.T.Singh

Detection of atomic nuclear reaction products via optical imaging

NUCLEAR REACTIONS 22Ne(α, n)25Mg, E at Gamow window; 91Nb(p, γ)92Mo, E at Gamow window; calculated yields, capture and detection efficiency of single reaction product atoms captured in optically transparent solid noble gas, followed by selective identification by laser-induced fluorescence and individual counting via optical imaging to determine the low-yield cross section. Single-atom microscope (SAM) technique.

ATOMIC PHYSICS Li, Be, Na, Al, S, Mg, K, Ca, Zn, Rb, Sr, Mo, Cd, Cs, Ba, Yb, Hg; compiled matrix-isolated absorption and emission atomic spectra of SAM-friendly species.

doi: 10.1103/PhysRevC.99.065805
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2018JI01      Phys.Rev. C 97, 012801 (2018)

C.L.Jiang, D.Santiago-Gonzalez, S.Almaraz-Calderon, K.E.Rehm, B.B.Back, K.Auranen, M.L.Avila, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.Dickerson, B.DiGiovine, J.P.Greene, C.R.Hoffman, R.V.F.Janssens, B.P.Kay, S.A.Kuvin, T.Lauritsen, R.C.Pardo, J.Sethi, D.Seweryniak, R.Talwar, C.Ugalde, S.Zhu, D.Bourgin, S.Courtin, F.Haas, M.Heine, G.Fruet, D.Montanari, D.G.Jenkins, L.Morris, A.Lefebvre-Schuhl, M.Alcorta, X.Fang, X.D.Tang, B.Bucher, C.M.Deibel, S.T.Marley

Reaction rate for carbon burning in massive stars

NUCLEAR REACTIONS 12C(12C, p)23Na, (12C, α)20Ne, E=5.5-10 MeV; measured Eγ, Iγ, (particle)γ-coin, σ(E) using Gammasphere array and an array of three annular double-sided silicon strip detectors at the ATLAS-ANL facility; deduced S factors and astrophysical reaction rates. Comparison with previous measurements, and with data from other reactions. Relevance to carbon burning is a critical phase for nucleosynthesis in massive stars.

doi: 10.1103/PhysRevC.97.012801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2288.


2018TA12      Phys.Rev. C 97, 055801 (2018)

R.Talwar, M.J.Bojazi, P.Mohr, K.Auranen, M.L.Avila, A.D.Ayangeakaa, J.Harker, C.R.Hoffman, C.L.Jiang, S.A.Kuvin, B.S.Meyer, K.E.Rehm, D.Santiago-Gonzalez, J.Sethi, C.Ugalde, J.R.Winkelbauer

Experimental study of 38Ar + α reaction cross sections relevant to the 41Ca abundance in the solar system

NUCLEAR REACTIONS 4He(38Ar, p), (38Ar, n), (38Ar, α'), E=133 MeV; measured energies and yields of reaction products, energy- and angle integrated σ(E) using multisampling ionization chamber (MUSIC) detector at the ATLAS-ANL facility. Comparison with previous experimental values, and with statistical model calculations using TALYS code. 41K(p, α)38Ar, 41Ca(n, α)38Ar, T=0.1-10.0 GK; deduced astrophysical reaction rates, and compared with statistical model calculations, and with REACLIB fits. Discussed relevance to 41Ca abundance in the solar system.

doi: 10.1103/PhysRevC.97.055801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2302.


2017AL29      Phys.Rev.Lett. 119, 072701 (2017)

S.Almaraz-Calderon, K.E.Rehm, N.Gerken, M.L.Avila, B.P.Kay, R.Talwar, A.D.Ayangeakaa, S.Bottoni, A.A.Chen, C.M.Deibel, C.Dickerson, K.Hanselman, C.R.Hoffman, C.L.Jiang, S.A.Kuvin, O.Nusair, R.C.Pardo, D.Santiago-Gonzalez, J.Sethi, C.Ugalde

Study of the 26Alm(d, p)27Al Reaction and the Influence of the 26Al 0+ Isomer on the Destruction of 26Al in the Galaxy

NUCLEAR REACTIONS C, 2H(26Al, p), E=120 MeV; measured reaction products, Eγ, Iγ. 26Al; deduced σ(θ), reaction rates. Comparison with available data, DWBA calculations.

doi: 10.1103/PhysRevLett.119.072701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2278. Data from this article have been entered in the XUNDL database. For more information, click here.


2017AV03      Nucl.Instrum.Methods Phys.Res. A859, 63 (2017)

M.L.Avila, K.E.Rehm, S.Almaraz-Calderon, A.D.Ayangeakaa, C.Dickerson, C.R.Hoffman, C.L.Jiang, B.P.Kay, J.Lai, O.Nusair, R.C.Pardo, D.Santiago-Gonzalez, R.Talwar, C.Ugalde

Study of (α, p) and (α, n) reactions with a Multi-Sampling Ionization Chamber

NUCLEAR REACTIONS 4He(17O, n), (17O, α'), E=34.8 MeV; 4He(23Na, α), (23Na, p), E=51.5, 57.4 MeV; measured reaction products, Eα, Iα, Ep, Ip; deduced σ. Comparison with available data.

doi: 10.1016/j.nima.2017.03.060
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2016AV06      Phys.Rev. C 94, 065804 (2016)

M.L.Avila, K.E.Rehm, S.Almaraz-Calderon, A.D.Ayangeakaa, C.Dickerson, C.R.Hoffman, C.L.Jiang, B.P.Kay, J.Lai, O.Nusair, R.C.Pardo, D.Santiago-Gonzalez, R.Talwar, C.Ugalde

Experimental study of the astrophysically important 23Na(α, p)26Mg and 23Na(α, n)26Al reactions

NUCLEAR REACTIONS 4He(23Na, p), (23Na, n), E=51.5, 57.4 MeV; measured particle spectra, and cross section using multisampling ionization chamber (MUSIC) detector at ATLAS-ANL facility. Comparison with previous measurements, NACRE compilation, and with statistical-model calculations. Technique to measure simultaneously excitation functions of angle- and excitation energy-integrated cross sections of (α, p) and (α, n) reactions. Relevance to 26Al production in massive stars.

doi: 10.1103/PhysRevC.94.065804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2249.


2016MU06      Phys.Rev. C 93, 065803 (2016)

M.Munch, M.Alcorta, H.O.U.Fynbo, M.Albers, S.Almaraz-Calderon, M.L.Avila, A.D.Ayangeakaa, B.B.Back, P.F.Bertone, P.F.F.Carnelli, M.P.Carpenter, C.J.Chiara, J.A.Clark, B.DiGiovine, J.P.Greene, J.L.Harker, C.R.Hoffman, N.J.Hubbard, C.L.Jiang, O.S.Kirsebom, T.Lauritsen, K.L.Laursen, S.T.Marley, C.Nair, O.Nusair, D.Santiago-Gonzalez, J.Sethi, D.Seweryniak, R.Talwar, C.Ugalde, S.Zhu

Independent measurement of the Hoyle state β feeding from 12B using Gammasphere

RADIOACTIVITY 12B(β-)[from 2H(11B, p), E=40 MeV from ATLAS-ANL facility]; measured Eγ, Iγ, γγ-coin, γγ(θ) for the Hoyle state using Gammasphere array. 12C; deduced first excited 2+ and 0+ levels, β branching ratio to the Hoyle state in 12C, logft, indication of higher clustering for the Hoyle state as compared to previous results. Comparison with theoretical calculations using antisymmetrized molecular dynamics (AMD), and with previous experimental results.

doi: 10.1103/PhysRevC.93.065803
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014AL06      Phys.Rev.Lett. 112, 152701 (2014)

S.Almaraz-Calderon, P.F.Bertone, M.Alcorta, M.Albers, C.M.Deibel, C.R.Hoffman, C.L.Jiang, S.T.Marley, K.E.Rehm, C.Ugalde

Direct Measurement of the 23Na(α, p)26Mg Reaction Cross Section at Energies Relevant for the Production of Galactic 26Al

NUCLEAR REACTIONS 4He(23Na, p)26Mg, E=23, 26, 28, 30 MeV; measured reaction products, Ep, Ip; deduced σ, reaction rates. Comparison with available data.

doi: 10.1103/PhysRevLett.112.152701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2107.


2014CA08      Phys.Rev.Lett. 112, 192701 (2014)

P.F.F.Carnelli, S.Almaraz-Calderon, K.E.Rehm, M.Albers, M.Alcorta, P.F.Bertone, B.Digiovine, H.Esbensen, J.O.Fernandez Niello, D.Henderson, C.L.Jiang, J.Lai, S.T.Marley, O.Nusair, T.Palchan-Hazan, R.C.Pardo, M.Paul, C.Ugalde

Measurements of Fusion Reactions of Low-Intensity Radioactive Carbon Beams on 12C and their Implications for the Understanding of X-Ray Bursts

NUCLEAR REACTIONS 12C(10C, X), (12C, X), (13C, X), (14C, X), (15C, X), E=40-50 MeV; measured fusion reaction products; deduced S-factors, σ. Time-dependent HF calculations.

doi: 10.1103/PhysRevLett.112.192701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2117.


2013ST14      Eur.Phys.J. A 49, 63 (2013)

A.M.Stefanini, G.Montagnoli, F.Scarlassara, C.L.Jiang, H.Esbensen, E.Fioretto, L.Corradi, B.B.Back, C.M.Deibel, B.Di Giovine, J.P.Greene, H.D.Henderson, S.T.Marley, M.Notani, N.Patel, K.E.Rehm, D.Sewerinyak, X.D.Tang, C.Ugalde, S.Zhu

Fusion of 60Ni + 100Mo near and below the Coulomb barrier - Multi-phonon and transfer couplings down to the hindrance region

NUCLEAR REACTIONS 100Mo(60Ni, X), (64Ni, X), E=196-262 MeV; measured particle tracks; deduced fusion σ, logarithmic excitation function slope; calculated fusion σ using CCFULL CC code.

doi: 10.1140/epja/i2013-13063-2
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2044.


2013UG01      Phys.Lett. B 719, 74 (2013)

C.Ugalde, B.DiGiovine, D.Henderson, R.J.Holt, K.E.Rehm, A.Sonnenschein, A.Robinson, R.Raut, G.Rusev, A.P.Tonchev

First determination of an astrophysical cross section with a bubble chamber: The 15N(α, γ)19F reaction

NUCLEAR REACTIONS 19F(γ, α), E<2 MeV; measured reaction products, Eα, Iα; deduced inverse reaction σ. R-matrix theory calculations.

doi: 10.1016/j.physletb.2012.12.068
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1993.


2012DE08      Phys.Rev. C 85, 045804 (2012)

R.J.de Boer, A.Couture, R.Detwiler, J.Gorres, P.Tischhauser, E.Uberseder, C.Ugalde, E.Stech, M.Wiescher, R.E.Azuma

Measurement of elastic 12C + α scattering: Above the proton separation energy

NUCLEAR REACTIONS 12C(α, α), E=2.6-8.2 MeV; measured Eα, Iα, σ(E, θ). 12C(α, α'), (α, p), E=6.6-8.2 MeV; analyzed σ(E, θ) data. 16O; deduced resonances, levels, J, π, α and proton widths. R-matrix analysis. Relevance to CNO cycle.

doi: 10.1103/PhysRevC.85.045804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1921. Data from this article have been entered in the XUNDL database. For more information, click here.


2011AL09      Phys.Rev.Lett. 106, 172701 (2011)

M.Alcorta, K.E.Rehm, B.B.Back, S.Bedoor, P.F.Bertone, C.M.Deibel, B.DiGiovine, H.Esbensen, J.P.Greene, C.R.Hoffmann, C.L.Jiang, J.C.Lighthall, S.T.Marley, R.C.Pardo, M.Paul, A.M.Rogers, C.Ugalde, A.H.Wuosmaa

Fusion Reactions with the One-Neutron Halo Nucleus 15C

NUCLEAR REACTIONS 232Th(13C, X), (14C, X), (15C, X), E(cm)=50-70 MeV; measured fusion fission fragments; deduced yields, σ, 15C+232Th cross section enhancement. Comparison with experimental data, couple-channel calculations.

doi: 10.1103/PhysRevLett.106.172701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1831.


2011DE28      Phys.Rev. C 84, 045802 (2011)

C.M.Deibel, K.E.Rehm, J.M.Figueira, J.P.Greene, C.L.Jiang, B.P.Kay, H.Y.Lee, J.C.Lighthall, S.T.Marley, R.C.Pardo, N.Patel, M.Paul, C.Ugalde, A.Woodard, A.H.Wuosmaa, G.Zinkann

First measurement of the 33Cl(p, α)30S reaction

NUCLEAR REACTIONS 1H(33Cl, α)30S, [33Cl secondary beam from 2H(32S, 33Cl), E=320 MeV primary reaction], E=208.1, 229.1, 250.6 MeV; measured Eα, Iα, particle spectra, (30S)α-coin; deduced cross sections. Enge split-pole magnetic spectrograph. Comparison of measured σ with NON-SMOKER code calculations.

doi: 10.1103/PhysRevC.84.045802
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1869.


2010AZ01      Phys.Rev. C 81, 045805 (2010)

R.E.Azuma, E.Uberseder, E.C.Simpson, C.R.Brune, H.Costantini, R.J.de Boer, J.Gorres, M.Heil, P.J.LeBlanc, C.Ugalde, M.Wiescher

AZURE: An R-matrix code for nuclear astrophysics

NUCLEAR REACTIONS 12C(p, γ), (p, p), 14N(p, γ), E=0.2-2.5 MeV; 16O(p, γ), E=0.23-3.75 MeV; analyzed σ(θ), proton widths, γ widths, S factor and nuclear phase shift using R-matrix analysis. Description of AZURE code for R-matrix analysis of reactions relevant to nuclear astrophysics.

doi: 10.1103/PhysRevC.81.045805
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2010JI03      Phys.Rev. C 81, 024611 (2010)

C.L.Jiang, K.E.Rehm, H.Esbensen, B.B.Back, R.V.F.Janssens, P.Collon, C.M.Deibel, B.DiGiovine, J.M.Figueira, J.P.Greene, D.J.Henderson, H.Y.Lee, M.Notani, S.T.Marley, R.C.Pardo, N.Patel, D.Seweryniak, X.D.Tang, C.Ugalde, S.Zhu

Fusion hindrance for 27Al+45Sc and other systems with a positive Q value

NUCLEAR REACTIONS 45Sc(27Al, X), E=51-82 MeV; measured fragment spectra, σ, astrophysical S-factor. Comparison with coupled-channels calculations. 14N(14N, X), E=4-11 MeV; 30Si(28Si, X), E=25-31 MeV; 45Sc(27Al, X), E=32-39 MeV; 64Ni(28Si, X), E=44-51 MeV; 40Ca(40Ca, X), E=49-57 MeV; 48Ca(48Ca, X), E=46-56 MeV; 48Ca(36S, X), E=37-48 MeV; comparison of measured cross sections and astrophysical S-factors with coupled-channel calculations.

doi: 10.1103/PhysRevC.81.024611
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1781.


2010LO11      Nucl.Phys. A841, 1 (2010)

R.Longland, C.Iliadis, A.E.Champagne, J.R.Newton, C.Ugalde, A.Coc, R.Fitzgerald

Charged-particle thermonuclear reaction rates: I. Monte Carlo method and statistical distributions

doi: 10.1016/j.nuclphysa.2010.04.008
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2009LE23      Phys.Rev. C 80, 025805 (2009)

H.Y.Lee, M.Couder, A.Couture, S.Falahat, J.Gorres, L.Lamm, P.J.LeBlanc, S.O'Brien, A.Palumbo, E.Stech, E.Strandberg, W.Tan, C.Ugalde, M.Wiescher

Cross-section measurement of the 18F(α, p)21Ne reaction and possible implication for neutron production in explosive helium burning

NUCLEAR REACTIONS 21Ne(p, α)18F, E=2.3-4.0 MeV; measured Eγ, Iγ, decay curves, half-lives; deduced reaction yields and σ by R-matrix analysis. 18F(α, p)21Ne, E=0.5-2.1 MeV; deduced σ and reaction rates. Comparison with Hauser-Feshbach calculations. Discussed implications for astrophysical r-process and evolution of elemental abundances in supernovae.

doi: 10.1103/PhysRevC.80.025805
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1734.


2009TI02      Phys.Rev. C 79, 055803 (2009)

P.Tischhauser, A.Couture, R.Detwiler, J.Gorres, C.Ugalde, E.Stech, M.Wiescher, M.Heil, F.Kappeler, R.E.Azuma, L.Buchmann

Measurement of elastic 12C+α scattering: Details of the experiment, analysis, and discussion of phase shifts

NUCLEAR REACTIONS 12C(α, α), E=2.6-8.2 MeV; measured Eα, Iα, σ(θ); deduced phase shifts using R-matrix analysis. 16O; deduced levels, resonances, α-widths. Application to 12C(α, γ)16O reaction of astrophysical interest.

doi: 10.1103/PhysRevC.79.055803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1461. Data from this article have been entered in the XUNDL database. For more information, click here.


2008CO03      Phys.Rev. C 77, 015802 (2008)

A.Couture, M.Beard, M.Couder, J.Gorres, L.Lamm, P.J.LeBlanc, H.Y.Lee, S.O'Brien, A.Palumbo, E.Stech, E.Strandberg, W.Tan, E.Uberseder, C.Ugalde, M.Wiescher, R.Azuma

Measurement of the 19F(p, γ)20Ne reaction and interference terms from Ec.m.=200-760 keV

NUCLEAR REACTIONS 19F(p, γ), E(cm)=200-700 keV; measured Eγ, Iγ, resonance parameters, interference signs. 20Ne, 16O, 19F; deduced levels, J, π.

doi: 10.1103/PhysRevC.77.015802
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Data from this article have been entered in the XUNDL database. For more information, click here.


2008HE11      Phys.Rev. C 78, 025803 (2008)

M.Heil, R.Detwiler, R.E.Azuma, A.Couture, J.Daly, J.Goerres, F.Kappeler, R.Reifarth, P.Tischhauser, C.Ugalde, M.Wiescher

The 13C(α, n) reaction and its role as a neutron source for the s process

NUCLEAR REACTIONS 13C(α, n), E(cm)=320-700 keV; 13C(α, α), E=2.6-6.2 MeV; measured radii, σ, σ(θ), S-factor. 17O; deduced levels, J, π, resonance parameters.16O(n, n), (n, αγ); analyzed σ. R-matrix analysis.

doi: 10.1103/PhysRevC.78.025803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0513.


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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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1627. Data from this article have been entered in the XUNDL database. For more information, click here.


2008UG01      Phys.Rev. C 77, 035801 (2008)

C.Ugalde, R.E.Azuma, A.Couture, J.Gorres, H.Y.Lee, E.Stech, E.Strandberg, W.Tan, M.Wiescher

Thermonuclear rate for the 19F(α, p)22Ne reaction at stellar temperatures

NUCLEAR REACTIONS 19F(α, p), E=792-1993 keV; measured yield curves, σ, σ(θ), reaction rate at stellar temperatures; calculated low energy S-factor. R-matrix analysis.

doi: 10.1103/PhysRevC.77.035801
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1605.


2007NE07      Phys.Rev. C 75, 045801 (2007)

J.R.Newton, C.Iliadis, A.E.Champagne, A.Coc, Y.Parpottas, C.Ugalde

Gamow peak in thermonuclear reactions at high temperatures

NUCLEAR REACTIONS 27Al(p, γ), 24Mg(α, γ), E not given; calculated reaction rates, resonance contributions. 21,22Ne, 23Na, 25,26Mg, 27Al, 29,30Si, 31P, 35Cl(p, γ), E ≈ 0-2.5 MeV; calculated Gamow peak vs effective thermonuclear energy range.

doi: 10.1103/PhysRevC.75.045801
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2007NE08      Phys.Rev. C 75, 055808 (2007)

J.R.Newton, C.Iliadis, A.E.Champagne, R.Longland, C.Ugalde

Remeasurement of the 193 keV resonance in 17O(p, α)14N

NUCLEAR REACTIONS 17O(p, α), E=140-210 keV; measured yields and resonance strength for the 193 keV resonance.

doi: 10.1103/PhysRevC.75.055808
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2007UG01      Phys.Rev. C 76, 025802 (2007)

C.Ugalde, A.E.Champagne, S.Daigle, C.Iliadis, R.Longland, J.R.Newton, E.Osenbaugh-Stewart, J.A.Clark, C.Deibel, A.Parikh, P.D.Parker, C.Wrede

Experimental evidence for a natural parity state in 26Mg and its impact on the production of neutrons for the s process

NUCLEAR REACTIONS 22Ne(6Li, d), E=30 MeV; measured deuteron energy spectra. 26Mg deduced level energies.

doi: 10.1103/PhysRevC.76.025802
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Data from this article have been entered in the XUNDL database. For more information, click here.


2006KA25      Astrophys.J. 643, 471 (2006)

A.I.Karakas, M.A.Lugaro, M M.Wiescher, J.Gorres, C.Ugalde

The uncertainties in the 22Ne-α-capture reaction rates and the production of the heavy magnesium isotopes in asymptotic giant branch stars of intermediate mass

NUCLEAR REACTIONS 22Ne(α, n), (α, γ), E=low; calculated astrophysical reaction rates, resonance parameters, related features. Implications for stellar nucleosynthesis discussed.

doi: 10.1086/502793
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2005TA28      Phys.Rev. C 72, 041302 (2005)

W.P.Tan, J.Gorres, J.Daly, M.Couder, A.Couture, H.Y.Lee, E.Stech, E.Strandberg, C.Ugalde, M.Wiescher

Lifetime of the astrophysically important 4.03-MeV state in 19Ne

NUCLEAR REACTIONS 17O(3He, n), E=3.0 MeV; measured Eγ, Iγ, nγ-coin, DSA. 19Ne levels deduced energies, T1/2. Astrophysical implications discussed. Comparison with model predictions.

doi: 10.1103/PhysRevC.72.041302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2005UG04      Nucl.Phys. A758, 577c (2005)

C.Ugalde, R.Azuma, A.Couture, J.Gorres, M.Heil, K.Scheller, E.Stech, W.Tan, M.Wiescher

The reaction rate for the destruction of fluorine in AGB stars

NUCLEAR REACTIONS 19F(α, p), E=1238-2009 keV; measured yields; deduced astrophysical reaction rates.

doi: 10.1016/j.nuclphysa.2005.05.106
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2003GO21      Nucl.Phys. A718, 155c (2003)

J.Gorres, S.Dababneh, A.Couture, M.Heil, F.Kappeler, H.Leiste, M.Lugaro, C.Ugalde, M.Wiescher

Nucleosynthesis in TP-AGB Stars and the Production of 19F

NUCLEAR REACTIONS 18O(α, γ), E ≈ 470, 566 MeV; measured Eγ, Iγ, γγ-coin; deduced resonance strengths, reaction rate. Implications for 19F nucleosynthesis discussed.

doi: 10.1016/S0375-9474(03)00707-3
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2001HE22      Nucl.Phys. A688, 499c (2001)

M.Heil, A.Couture, J.Daly, R.Detwiler, J.Gorres, G.Hale, F.Kappeler, R.Reifarth, U.Giesen, E.Stech, P.Tischhauser, C.Ugalde, M.Wiescher

A Measurement of the 13C(α, α) Differential Cross Section and Its Application to the 13C(α, n) Reaction

NUCLEAR REACTIONS 13C(α, α), E=2.6-6.2 MeV; measured σ(θ). 13C(α, n), E=0-2 MeV; calculated σ, S-factor following r-matrix analysis of elastic scattering data. Comparison with earlier results for s-process conditions.

doi: 10.1016/S0375-9474(01)00768-0
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