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NSR database version of April 27, 2024.

Search: Author = E.Simmons

Found 12 matches.

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2014PA09      Phys.Rev.Lett. 112, 102502 (2014)

H.I.Park, J.C.Hardy, V.E.Iacob, M.Bencomo, L.Chen, V.Horvat, N.Nica, B.T.Roeder, E.Simmons, R.E.Tribble, I.S.Towner

β Decay of ³⁸Ca: Sensitive test of Isospin Symmetry-Breaking Corrections from Mirror Superallowed 0⁺ → 0⁺ Transitions

RADIOACTIVITY ³⁸Ca, ³⁸K(β⁺) [from ¹H(³⁹K, 2n)³⁸Ca, E=30 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced branching ratio, high-precision log ft value. Test of the isospin symmetry-breaking corrections, comparison with available data.

doi: 10.1103/PhysRevLett.112.102502
Citations: PlumX Metrics
Data from this article have been entered in the XUNDL database. For more information, click here.

2013SO11      Phys.Rev. C 87, 054329 (2013)

L.G.Sobotka, W.W.Buhro, R.J.Charity, J.M.Elson, M.F.Jager, J.Manfredi, M.H.Mahzoon, A.M.Mukhamedzhanov, V.Eremenko, M.McCleskey, R.G.Pizzone, B.T.Roeder, A.Spiridon, E.Simmons, L.Trache, M.Kurokawa, P.Navratil

Proton decay of excited states in ¹²N and ¹³O and the astrophysical ¹¹C(p, γ)¹²N reaction rate

NUCLEAR REACTIONS ⁹Be(¹³O, X), E=30.3 MeV/nucleon, [¹³O secondary beam from ¹H(¹⁴N, X), E=38 MeV/nucleon primary reaction]; measured particle spectra, E(p), I(p), widths using MARS spectrometer at Texas AM cyclotron facility. Invariant mass method. R-matrix analysis. ¹¹C, ¹²N, ¹³O; deduced levels, J, π, one-proton and two-proton decay branching ratios. ¹¹C(p, γ)¹²N; deduced astrophysical reaction rates and S(E) factors.

doi: 10.1103/PhysRevC.87.054329
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2031. Data from this article have been entered in the XUNDL database. For more information, click here.

2012GO11      J.Phys.:Conf.Ser. 337, 012008 (2012)

V.Z.Goldberg, B.T.Roeder, G.V.Rogachev, G.G.Chubarian, E.D.Johnson, C.Fu, A.A.Alharbi, M.L.Avila, A.Banu, M.McCleskey, J.P.Mitchell, E.Simmons, G.Tabacaru, L.Trache, R.E.Tribble

Resonance Scattering to Study Exotic Nuclei at the Limits of Stability

NUCLEAR REACTIONS ¹H(¹³O, ¹³O), E≈11 MeV/nucleon;measured thick target charged reaction products. ¹⁴F deduced levels, widths, J, π, σ(θ); calculated ¹⁴F resonance levels, widths, J, π, σ(θ) using R-matrix, ¹⁴F levels, J, π using shell model and ab initio calculations. ¹H(⁸He, ⁸He), E=cyclotron; calculated, re-analyzed published results considering virtual 2s resonance in ⁹He.

doi: 10.1088/1742-6596/337/1/012008
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2012JA11      Phys.Rev. C 86, 011304 (2012);Erratum Phys.Rev. C 86, 059902 (2012)

M.F.Jager, R.J.Charity, J.M.Elson, J.Manfredi, H.Mohammad, L.G.Sobotka, M.McCleskey, R.G.Pizzone, B.T.Roeder, A.Spiridon, E.Simmons, L.Trache, M.Kurokawa

Two-proton decay of ¹²O and its isobaric analog state in ¹²N

NUCLEAR REACTIONS ⁹Be(¹³O, ¹²O), (¹³O, ¹²N), [¹³O secondary beam from ¹H(¹⁴N, X), E=38 MeV/nucleon primary reaction], E=30.3 MeV/nucleon]; measured excitation energy spectra for p+¹¹C, p+¹²C, 2p+¹⁰C, 2p+¹⁰B events. Two proton decay modes of g.s. of ¹²O and excited states of ¹²O and ¹²N. ¹²O, ¹²N; deduced levels, J, π, widths, IAS of ¹²O g.s. in ¹²N. ¹⁰B; deduced level, IAS in ¹⁰B from 2p decay of IAS in ¹²N. ¹³N; deduced level, J, π.

RADIOACTIVITY ¹²O(2p)[⁹Be(¹³O, ¹²O), E=30.3 MeV/nucleon](2p); measured total excitation energy spectra for decay of g.s. of ¹²O.

ATOMIC MASSES ¹²O, ¹²N; analyzed isobaric multiplet mass equation (IMME) for A=12 quintet; deduced mass excesses using the invariant mass method.

doi: 10.1103/PhysRevC.86.011304
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Data from this article have been entered in the XUNDL database. For more information, click here.

2012PA07      Phys.Rev. C 85, 035501 (2012)

H.I.Park, J.C.Hardy, V.E.Iacob, L.Chen, J.Goodwin, N.Nica, E.Simmons, L.Trache, R.E.Tribble

Precise half-life measurement of the superallowed β⁺ emitter ⁴⁶V

RADIOACTIVITY ⁴⁶V(β⁺)[from ¹H(⁴⁷Ti, 2n), E=32 MeV/nucleon]; measured β spectra, precise half-life of ⁴⁶V isotope; deduced Ft value for superallowed β transition. Discussed error budget for half-life measurement.

doi: 10.1103/PhysRevC.85.035501
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Data from this article have been entered in the XUNDL database. For more information, click here.

2012TR08      J.Phys.:Conf.Ser. 337, 012058 (2012)

L.Trache, A.Banu, J.C.Hardy, V.E.Iacob, M.McCleskey, B.T.Roeder, E.Simmons, A.Spiridon, R.E.Tribble, A.Saastamoinen, A.Jokinen, J.Aysto, T.Davinson, G.Lotay, P.J.Woods, E.Pollacco

Decay spectroscopy for nuclear astrophysics: β- and β-delayed proton decay

RADIOACTIVITY ²³Al, ²⁷P, ³¹Cl(EC), (β⁺p) [from ¹H(²⁴Mg, X), E=48 MeV/nucleon; ¹H(²⁸Si, X), (³²S, X), E=40 MeV/nucleon]; measured β-delayed Ep, Ip using DSSSD (double-sided strip Si detector), Iβ using Si detector, pβ-coin, Eγ, Iγ using HPGe, βγ-coin. ²³Al deduced mass excess, partial decay scheme, levels, J, π, resonance strength, proton branching, isomeric decay, T_1/2, IAS, log ft. Only the ²³Al results presented.

doi: 10.1088/1742-6596/337/1/012058
Citations: PlumX Metrics

2012WA15      Phys.Lett. B 712, 59 (2012)

J.P.Wallace, P.J.Woods, G.Lotay, A.Alharbi, A.Banu, H.M.David, T.Davinson, M.McCleskey, B.T.Roeder, E.Simmons, A.Spiridon, L.Trache, R.E.Tribble

β-Delayed proton-decay study of ²⁰Mg and its implications for the ¹⁹Ne(p, γ)²⁰Na breakout reaction in X-ray bursts

RADIOACTIVITY ²⁰Mg(β⁺p) [from ³He(²⁰Ne, 3n)²⁰Mg, E=25 MeV/nucleon]; measured decay products, Eβ, Iβ, Ep, Ip. ¹⁹Ne; deduced proton energy spectrum, resonant states, resonance strengths.

doi: 10.1016/j.physletb.2012.04.046
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Data from this article have been entered in the XUNDL database. For more information, click here.

2011BA27      Phys.Rev. C 84, 015803 (2011)

A.Banu, L.Trache, F.Carstoiu, N.L.Achouri, A.Bonaccorso, W.N.Catford, M.Chartier, M.Dimmock, B.Fernandez-Dominguez, M.Freer, L.Gaudefroy, M.Horoi, M.Labiche, B.Laurent, R.C.Lemmon, F.Negoita, N.A.Orr, S.Paschalis, N.Patterson, E.S.Paul, M.Petri, B.Pietras, B.T.Roeder, F.Rotaru, P.Roussel-Chomaz, E.Simmons, J.S.Thomas, R.E.Tribble

Structure of ²³Al from the one-proton breakup reaction and astrophysical implications

NUCLEAR REACTIONS ¹²C(²³Al, ²²Mg), [²³Al secondary beam from C(³²S, X)E=95 MeV/nucleon primary reaction], E=57 MeV/nucleon; measured fragment spectra, inclusive and exclusive longitudinal momentum distributions, and widths, Eγ, (fragment)γ-coin. ²²Mg; deduced levels, J, π, σ, spectroscopic factors, asymptotic normalization coefficients. ²³Al; deduced g.s. Jπ, configuration mixing. Comparison with Glauber and large-scale shell model calculations. ²²Mg(p, γ)²³Al, E<1 MeV; deduced stellar reaction rates; discussed astrophysical significance of ²²Na nucleosynthesis in ONe novae.

doi: 10.1103/PhysRevC.84.015803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1918. Data from this article have been entered in the XUNDL database. For more information, click here.

2011PA38      Phys.Rev. C 84, 065502 (2011)

H.I.Park, J.C.Hardy, V.E.Iacob, A.Banu, L.Chen, V.V.Golovko, J.Goodwin, V.Horvat, N.Nica, E.Simmons, L.Trache, R.E.Tribble

Precise half-life measurement of the superallowed β⁺ emitter ³⁸Ca

RADIOACTIVITY ³⁸Ca, ^38mK(β⁺), (EC)[³⁸Ca from ¹H(³⁹K, 2n), E=30 MeV/nucleon, ³⁸K from ³⁸Ca decay]; measured I(β⁺) using 4π proportional gas counter, half-life, data analyzed as a linked parent-daughter decay. Comparison with previous results. Superallowed β⁺ emitters.

doi: 10.1103/PhysRevC.84.065502
Citations: PlumX Metrics
Data from this article have been entered in the XUNDL database. For more information, click here.

2011RO60      Nucl.Instrum.Methods Phys.Res. A 634, 71 (2011)

B.T.Roeder, M.Mccleskey, L.Trache, A.A.Alharbi, A.Banu, S.Cherubini, T.Davinson, V.Z.Goldberg, M.Gulino, R.G.Pizzone, E.Simmons, R.Sparta, A.Spiridon, C.Spitaleri, J.P.Wallace, R.E.Tribble, P.J.Woods

The Texas-Edinburgh-Catania Silicon Array (TECSA): A detector for nuclear astrophysics and nuclear structure studies with rare isotope beams

NUCLEAR REACTIONS ²H(¹⁴C, p), ¹⁴C(d, p), E=163.8 MeV; measured products, ¹⁵C, Eπ, Iπ; deduced σ(θ). Data were imported from EXFOR entry C1826.

doi: 10.1016/j.nima.2011.01.035
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1826.

2011SA15      Phys.Rev. C 83, 045808 (2011)

A.Saastamoinen, L.Trache, A.Banu, M.A.Bentley, T.Davinson, J.C.Hardy, V.E.Iacob, M.McCleskey, B.T.Roeder, E.Simmons, G.Tabacaru, R.E.Tribble, P.J.Woods, J.Aysto

Experimental study of β-delayed proton decay of ²³Al for nucleosynthesis in novae

RADIOACTIVITY ²³Al(β⁺), (β⁺p); measured E(p), I(p), Eγ, Iγ, βγ-, βp-coin. ²²Na, ²³Mg; deduced levels, J, π, widths, IAS of ²³Al, resonance strength at 7787 keV and its contribution to the reaction rates for ²²Na(p, γ) reaction at typical nova peak temperatures.

doi: 10.1103/PhysRevC.83.045808
Citations: PlumX Metrics
Data from this article have been entered in the XUNDL database. For more information, click here.

2010GO16      Phys.Lett. B 692, 307 (2010)

V.Z.Goldberg, B.T.Roeder, G.V.Rogachev, G.G.Chubarian, E.D.Johnson, C.Fu, A.A.Alharbi, M.L.Avila, A.Banu, M.McCleskey, J.P.Mitchell, E.Simmons, G.Tabacaru, L.Trache, R.E.Tribble

First observation of ¹⁴F

NUCLEAR REACTIONS ¹H(¹³O, X)¹⁴F, E=31 MeV/nucleon; ¹H(¹⁴O, ¹⁴O), E=154 MeV; measured reaction products, proton spectra; deduced σ(θ), J, π, level scheme, resonances. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2010.07.054
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1815. Data from this article have been entered in the XUNDL database. For more information, click here.