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NSR database version of April 27, 2024.

Search: Author = E.D.Johnson

Found 14 matches.

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2020HU10      Phys.Rev. C 102, 014615 (2020)

C.Hunt, G.V.Rogachev, S.Almaraz-Calderon, A.Aprahamian, M.Avila, L.T.Baby, B.Bucher, V.Z.Goldberg, E.D.Johnson, K.W.Kemper, A.N.Kuchera, W.P.Tan, I.Wiedenhover

Observation of T = 3/2 isobaric analog states in ⁹Be using p + ⁸Li resonance scattering

NUCLEAR REACTIONS ¹H(⁸Li, ⁸Li), E(cm)=1.46-2.3 MeV, [secondary ⁸Li radioactive beam from ²H(⁷Li, ⁸Li), E=23.5, 27 MeV primary reaction]; measured energies of light and heavy recoils, (light recoils)(heavy recoils)-coin, differential σ(θ, E) using two annular Silicon strip detectors at RESOLUT radioactive nuclear beam facility of the FSU John D. Fox Superconducting Accelerator Laboratory. ⁹Be; deduced resonances J, π, width, T=3/2 IAS, spectroscopic factors from R-matrix analysis using MINRMATRIX code. Discussed isomirror properties for the T=3/2 A=9 isoquartet. Relevance to study of the structure of neutron-rich exotic nuclei through IAS.

doi: 10.1103/PhysRevC.102.014615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2600. Data from this article have been entered in the XUNDL database. For more information, click here.

2017KO31      Nucl.Instrum.Methods Phys.Res. A870, 1 (2017)

E.Koshchiy, J.C.Blackmon, G.V.Rogachev, I.Wiedenhover, L.Baby, P.Barber, D.W.Bardayan, J.Belarge, D.Caussyn, E.D.Johnson, K.Kemper, A.N.Kuchera, L.E.Linhardt, K.T.Macon, M.Matos, B.S.Rasco, D.Santiago-Gonzalez

ANASEN: The array for nuclear astrophysics and structure with exotic nuclei

NUCLEAR REACTIONS ⁴He(⁶He, ⁶He), E=7-29 MeV; ⁴He(¹⁴N, p), E=35.6 MeV; measured reaction products, Eα, Iα; deduced σ(θ).

doi: 10.1016/j.nima.2017.07.030
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2014AV04      Phys.Rev. C 90, 024327 (2014)

M.L.Avila, G.V.Rogachev, V.Z.Goldberg, E.D.Johnson, K.W.Kemper, Yu.M.Tchuvil'sky, A.S.Volya

α-cluster structure of ¹⁸O

NUCLEAR REACTIONS ⁴He(¹⁴C, α), E=14.9 MeV; measured Eα, Iα, differential σ(E), partial α- and neutron-decay widths at FSU Superconducting linear accelerator facility. ¹⁸O; deduced levels, resonances, J, π, widths, reduced α widths. Multilevel, multichannel R-matrix analysis. Discussed rotational bands, and α-cluster structure with reference to those in ¹⁶O and ²⁰Ne. Comparison with cluster-nucleon configuration interaction model calculations, and with earlier experimental results.

doi: 10.1103/PhysRevC.90.024327
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2131. Data from this article have been entered in the XUNDL database. For more information, click here.

2013MI05      Phys.Rev. C 87, 054617 (2013)

J.P.Mitchell, G.V.Rogachev, E.D.Johnson, L.T.Baby, K.W.Kemper, A.M.Moro, P.Peplowski, A.S.Volya, I.Wiedenhover

Structure of ⁸B from elastic and inelastic ⁷Be+p scattering

NUCLEAR REACTIONS ¹H(⁷Be, ⁷Be), (⁷Be, ⁷Be'), [secondary ⁷Be from ¹H(⁷Li, ⁷Bi), E=9 MeV primary reaction], E=18.5, 22, 27.2 MeV; measured particle spectra, (⁷Be)p-coin, differential σ(E) at FSU accelerator facility. ⁸B; deduced levels, resonances, J, π, proton and total widths, spectroscopic factors, phase shifts. ⁷Be(p, p), (p, p'); analysis of excitation function by R-matrix method. ⁷Li(n, γ); calculated σ as function of excitation energy using TDCSM model. ⁷Li(n, n), (n, n'), E(cm)=0.1-1.4 MeV; analyzed σ by R-matrix theory. Comparison of σ and phase shifts with predictions of TDCSM model and ab initio no-core shell model coupled with the resonating group method (NCSM/RGM) calculations.

doi: 10.1103/PhysRevC.87.054617
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2028. 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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2012RO32      Prog.Theor.Phys.(Kyoto), Suppl. 196, 184 (2012)

G.V.Rogachev, M.Avila, S.Cherubini, V.Z.Goldberg, M.Gulino, E.D.Johnson, A.N.Kuchera, M.La Cognata, L.Lamia, S.Romano, L.E.Miller, R.G.Pizzone, G.G.Rapisarda, M.L.Sergi, C.Spitaleri, R.E.Tribble, W.H.Trzaska, A.Tumino

Clustering in Non-Self-Conjugate Nuclei

NUCLEAR REACTIONS ⁹Be(p, α), E(cm)=2-5.5 MeV; ⁴He(¹⁴C, X)¹⁸O, E(cm)=2-7 MeV; measured reaction products, Eα, Iα; deduced σ(θ), resonance parameters. Comparison with available data, R-matrix fit.

doi: 10.1143/PTPS.196.184
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2011KU24      Phys.Rev. C 84, 054615 (2011); Erratum Phys.Rev. C 85, 069902 (2012); Erratum Phys.Rev. C 88, 039901 (2013)

A.N.Kuchera, G.V.Rogachev, V.Z.Goldberg, E.D.Johnson, S.Cherubini, M.Gulino, M.La Cognata, L.Lamia, S.Romano, L.E.Miller, R.G.Pizzone, G.G.Rapisarda, M.L.Sergi, C.Spitaleri, R.E.Tribble, W.H.Trzaska, A.Tumino

Molecular structures in T=1 states of ¹⁰B

NUCLEAR REACTIONS ¹H(⁹Be, α)⁶Li*, E=22.3-55.6 MeV; measure Eα, Iα, particle spectra, σ(E, θ). ¹⁰B; deduced levels, J, π, isospin, widths, cluster state, highly deformed molecular type rotational band. R-matrix analysis of excitation functions and angular distributions. Comparison with level structure in ¹⁰Be.

doi: 10.1103/PhysRevC.84.054615
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO1961. 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
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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.

2010JO08      J.Phys.:Conf.Ser. 205, 012011 (2010)

E.D.Johnson, G.V.Rogachev, V.Z.Goldberg, S.Brown, D.Robson, A.M.Crisp, P.D.Cottle, C.Fu, J.Giles, B.W.Green, K.W.Kemper, K.Lee, B.T.Roeder, R.E.Tribble

Clustering in N ≠ Z nuclei

NUCLEAR REACTIONS ⁴He(¹⁴C, ¹⁴C), E=25 MeV; measured resonance elastic scattering, Eα, Iα(θ); deduced σ, σ(θ); calculated σ, σ(θ) using R-matrix; deduced resonance parameters, α-widths, n-widths. ⁴He(¹⁴C, ¹⁸O), E≈1-100 keV; calculated, analyzed reaction data using DWBA σ and Coulomb modified ANC; deduced reaction rates, asymptotic normalization coefficients, influence of cluster resonant and nonresonant capture.

doi: 10.1088/1742-6596/205/1/012011
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2010MI12      Phys.Rev. C 82, 011601 (2010)

J.P.Mitchell, G.V.Rogachev, E.D.Johnson, L.T.Baby, K.W.Kemper, A.M.Moro, P.N.Peplowski, A.Volya, I.Wiedenhover

Low-lying states in ⁸B

NUCLEAR REACTIONS ¹H(⁷Be, ⁷Be), (⁷Be, ⁷Be'), E=18.5, 22.0 MeV, [secondary ⁷Be beam from primary ¹H(⁷Li, ⁷Be) reaction]; measured recoil proton and ⁷Be spectra, (proton)(⁷Be)-coin, excitation functions and angular distributions. ⁸B; deduced levels, J, π, partial proton widths and total widths. R-matrix and time-dependent continuum shell model (TDCSM) analysis. Comparison with low-lying level structure of mirror nucleus ⁸Li.

doi: 10.1103/PhysRevC.82.011601
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1809. Data from this article have been entered in the XUNDL database. For more information, click here.

2009JO07      Phys.Rev. C 80, 045805 (2009)

E.D.Johnson, G.V.Rogachev, J.Mitchell, L.Miller, K.W.Kemper

¹⁴C(α, γ) reaction rate

NUCLEAR REACTIONS ⁶Li(¹⁴C, d), E=8.8 MeV; ⁷Li(¹⁴C, t), E=11.5 MeV; measured Ed, Id, Et, It, σ, σ(θ). ¹⁸O; deduced levels, J, π. ¹⁴C(α, γ)¹⁸O; deduced astrophysical S factors, reaction rates, and asymptotic normalization coefficients (ANCs).

doi: 10.1103/PhysRevC.80.045805
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1761. Data from this article have been entered in the XUNDL database. For more information, click here.

2009JO08      Eur.Phys.J. A 42, 135 (2009)

E.D.Johnson, G.V.Rogachev, V.Z.Goldberg, S.Brown, D.Robson, A.M.Crisp, P.D.Cottle, C.Fu, J.Giles, B.W.Green, K.W.Kemper, K.Lee, B.T.Roeder, R.E.Tribble

Extreme α-clustering in the ¹⁸O nucleus

NUCLEAR REACTIONS ⁴He(¹⁴C, ¹⁴C), E=25 MeV; measured σ(E, θ). ¹⁸O; deduced levels, widths, J, π using R-matrix analysis.

doi: 10.1140/epja/i2009-10887-1
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Data from this article have been entered in the XUNDL database. For more information, click here.

2008SK06      Phys.Rev. C 78, 044603 (2008)

B.B.Skorodumov, G.V.Rogachev, A.Aprahamian, V.Z.Goldberg, J.J.Kolata, S.Almaraz, H.Amro, E.D.Johnson, L.O.Lamm, M.Quinn, A.Teymurazyan, A.Woehr

T = 3/2 states in ¹³C

NUCLEAR REACTIONS ¹H, C(¹¹B, ¹¹B), (¹²B, ¹²B), E=44.6 MeV; measured σ(θ). ¹³C; deduced levels, J, π, resonance widths. Comparisons with ¹³B, ¹³N, ¹³O, shell model calculations.

doi: 10.1103/PhysRevC.78.044603
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1658. Data from this article have been entered in the XUNDL database. For more information, click here.

2006JO11      Phys.Rev.Lett. 97, 192701 (2006)

E.D.Johnson, G.V.Rogachev, A.M.Mukhamedzhanov, L.T.Baby, S.Brown, W.T.Cluff, A.M.Crisp, E.Diffenderfer, V.Z.Goldberg, B.W.Green, T.Hinners, C.R.Hoffman, K.W.Kemper, O.Momotyuk, P.Peplowski, A.Pipidis, R.Reynolds, B.T.Roeder

Astrophysical Reaction Rate for the Neutron-Generator Reaction ¹³C(α, n)¹⁶O in Asymptotic Giant Branch Stars

NUCLEAR REACTIONS ⁶Li(¹³C, d), E=8.0, 8.5 MeV; measured deuteron spectra, σ(E, θ); deduced asymptotic normalization coefficient for subthreshold resonance. ¹³C(α, n), E ≈ 0-1 MeV; deduced astrophysical S-factor, reaction rates.

doi: 10.1103/PhysRevLett.97.192701
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1470.