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NSR database version of April 11, 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
Citations: PlumX Metrics


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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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, T1/2, 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
Citations: PlumX Metrics

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
Citations: PlumX Metrics

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.


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