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NSR database version of April 11, 2024.

Search: Author = J.L.Harker

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2023CR03      Nucl.Instrum.Methods Phys.Res. A1055, 168525 (2023)

B.P.Crider, C.J.Prokop, S.N.Liddick, H.M.Albers, M.Alshudifat, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Chen, C.J.Chiara, A.C.Dombos, S.Go, R.Grzywacz, J.Harker, R.V.F.Janssens, N.Larson, T.Lauritsen, R.Lewis, S.J.Quinn, F.Recchia, D.Seweryniak, A.Spyrou, S.Suchyta, W.B.Walters, S.Zhu

New method for level-lifetime measurements with thick scintillators

NUCLEAR REACTIONS 9Be(76Ge, X)68Ni/68Zn/69Ni/70Ni, E=140 MeV/nucleon; measured reaction products, Eγ, Iγ, Eβ, Iβ, βγ-coin.; deduced γ-ray energies, level T1/2. Comparison with available data. The National Superconducting Cyclotron Laboratory (NSCL), the coupled cyclotron facility.

doi: 10.1016/j.nima.2023.168525
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021DO08      Phys.Rev.Lett. 127, 202501 (2021)

D.T.Doherty, A.N.Andreyev, D.Seweryniak, P.J.Woods, M.P.Carpenter, K.Auranen, A.D.Ayangeakaa, B.B.Back, S.Bottoni, L.Canete, J.G.Cubiss, J.Harker, T.Haylett, T.Huang, R.V.F.Janssens, D.G.Jenkins, F.G.Kondev, T.Lauritsen, C.Lederer-Woods, J.Li, C.Muller-Gatermann, D.Potterveld, W.Reviol, G.Savard, S.Stolze, S.Zhu

Solving the Puzzles of the Decay of the Heaviest Known Proton-Emitting Nucleus 185Bi

RADIOACTIVITY 185Bi(p), (α), (IT) [from 95Mo(93Nb, 3n), E=424 MeV]; measured decay products, Eγ, Iγ, Eα, Iα, Ep, Ip, α-γ- and π-γ-coin.; deduced γ-ray energies, decay levels schemes, T1/2, high-spin states, reassignment of the ground-state lifetime, proton-decay spectroscopic factor. Fragment Mass Analyzer and Argonne Gas-Filled Analyzer at Argonne National Laboratory's ATLAS facility.

doi: 10.1103/PhysRevLett.127.202501
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2021KA05      Phys.Lett. B 813, 136033 (2021)

A.Kankainen, P.J.Woods, D.T.Doherty, H.M.Albers, M.Albers, A.D.Ayangeakaa, M.P.Carpenter, C.J.Chiara, J.L.Harker, R.V.F.Janssens, C.Lederer-Woods, D.Seweryniak, F.Strieder, S.Zhu

Decay of the key 92-keV resonance in the 25Mg(p, γ) reaction to the ground and isomeric states of the cosmic γ-ray emitter 26Al

NUCLEAR REACTIONS 24Mg(3He, p), E=10 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and intensities, γ-ray branches, J, π.

doi: 10.1016/j.physletb.2020.136033
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2632. Data from this article have been entered in the XUNDL database. For more information, click here.


2020CZ01      Phys.Rev. C 101, 024312 (2020)

A.Czeszumska, N.D.Scielzo, S.A.Caldwell, J.A.Clark, G.Savard, B.S.Wang, A.Aprahamian, M.T.Burkey, C.J.Chiara, J.Harker, A.F.Levand, S.T.Marley, G.Morgan, J.M.Munson, E.B.Norman, A.Nystrom, R.Orford, S.W.Padgett, A.Perez Galvan, K.S.Sharma, K.Siegl, S.Y.Strauss

β-delayed neutron emission studies of 137,138I and 144,145Cs performed with trapped ions

RADIOACTIVITY 137,138I, 144,145Cs(β-), (β-n)[252Cf(SF) CARIBU facility and mass scans of radioactive beams with the Canadian Penning Trap (CPT) mass spectrometer at Argonne National Laboratory]; measured recoil ions, Eβ, Eγ, (recoil ions)β- and βγ-coin using Beta-decay Paul Trap with two plastic-scintillator ΔE-E telescopes, two MCP detectors, and two HPGe detectors; deduced beta-delayed neutron spectra, beta-delayed neutron-emission probabilities (%β-n or Pn). Comparison with previous experimental results.

doi: 10.1103/PhysRevC.101.024312
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14632. Data from this article have been entered in the XUNDL database. For more information, click here.


2020WA04      Phys.Rev. C 101, 025806 (2020)

B.S.Wang, S.A.Caldwell, N.D.Scielzo, A.Czeszumska, J.A.Clark, G.Savard, A.Aprahamian, M.T.Burkey, C.J.Chiara, J.Harker, A.F.Levand, S.T.Marley, G.E.Morgan, J.M.Munson, E.B.Norman, A.Nystrom, R.Orford, S.W.Padgett, A.Perez Galvan, K.S.Sharma, K.Siegl, S.Y.Strauss

β-delayed-neutron studies of 135,136Sb and 140I performed with trapped ions

RADIOACTIVITY 135,136Sb, 140I(β-), (β-n) [from 252Cf(SF) CARIBU facility and mass scans of radioactive beams with the Canadian Penning Trap (CPT) mass spectrometer at Argonne National Laboratory]; measured recoil ions, Eβ, Eγ, (recoil ions)β- and βγ-coin using Beta-decay Paul Trap with two plastic-scintillator ΔE-E telescopes, two MCP detectors, and two HPGe detectors; deduced beta-delayed neutron spectra, beta-delayed neutron-emission probabilities (%β-n or Pn). Comparison with earlier experimental results.

doi: 10.1103/PhysRevC.101.025806
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14685. Data from this article have been entered in the XUNDL database. For more information, click here.


2019AU02      Phys.Lett. B 792, 187 (2019)

K.Auranen, D.Seweryniak, M.Albers, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.J.Chiara, P.Copp, H.M.David, D.T.Doherty, J.Harker, C.R.Hoffman, R.V.F.Janssens, T.L.Khoo, S.A.Kuvin, T.Lauritsen, G.Lotay, A.M.Rogers, C.Scholey, J.Sethi, R.Talwar, W.B.Walters, P.J.Woods, S.Zhu

Proton decay of 108I and its significance for the termination of the astrophysical rp-process

RADIOACTIVITY 108I(α), (p), 109I(p), 107,108Te(α) [from 54Fe(58Ni, X)108I/109I/108Te/107Te, E=254 MeV]; measured Eα, Iα, Ep, Ip; deduced Q-values, T1/2, mass excesses, branching ratio. Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2019.03.039
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2019EL08      Phys.Rev. C 100, 034317 (2019)

B.Elman, A.Gade, R.V.F.Janssens, A.D.Ayangeakaa, D.Bazin, J.Belarge, P.C.Bender, B.A.Brown, C.M.Campbell, M.P.Carpenter, H.L.Crawford, B.P.Crider, P.Fallon, A.M.Forney, J.Harker, S.N.Liddick, B.Longfellow, E.Lunderberg, C.J.Prokop, J.Sethi, R.Taniuchi, W.B.Walters, D.Weisshaar, S.Zhu

Probing the role of proton cross-shell excitations in 70Ni using nucleon knockout reactions

NUCLEAR REACTIONS 9Be(71Cu, 70Ni), E=80.2 MeV/nucleon; 9Be(71Ni, 70Ni), E=82.6 MeV/nucleon; 9Be(72Zn, 70Ni), E=76.5 MeV/nucleon, [secondary 71Cu, 71Ni, 71Zn beams from 9Be(76Ge, X), E=130 MeV/nucleon primary reaction at the K500 and K1200 coupled cyclotrons of NSCL-MSU]; measured yields of reaction products, Eγ, Iγ, γγ- and (knockout residues)γ-coin using GRETINA array for γ detection, and CsI(Na) hodoscope array for reaction residues. 70Ni; deduced levels, J, π, configurations. Comparison with shell-model calculations for only the neutron excitations using the jj44pna effective interaction.

doi: 10.1103/PhysRevC.100.034317
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2018AU04      Phys.Rev.Lett. 121, 182501 (2018)

K.Auranen, D.Seweryniak, M.Albers, A.D.Ayangeakaa, S.Bottoni, M.P.Carpenter, C.J.Chiara, P.Copp, H.M.David, D.T.Doherty, J.Harker, C.R.Hoffman, R.V.F.Janssens, T.L.Khoo, S.A.Kuvin, T.Lauritsen, G.Lotay, A.M.Rogers, J.Sethi, C.Scholey, R.Talwar, W.B.Walters, P.J.Woods, S.Zhu

Superallowed α Decay to Doubly Magic 100Sn

RADIOACTIVITY 108Xe, 104Te(α) [from 54Fe(58Ni, 4n)108Xe, E=245 MeV]; measured decay products, Eα, Iα; deduced α-particles energies, T1/2. A heavy self-conjugate nucleus, comparison with available data.

doi: 10.1103/PhysRevLett.121.182501
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2018FO11      Phys.Rev.Lett. 120, 212501 (2018)

A.M.Forney, W.B.Walters, C.J.Chiara, R.V.F.Janssens, A.D.Ayangeakaa, J.Sethi, J.Harker, M.Alcorta, M.P.Carpenter, G.Gurdal, C.R.Hoffman, B.P.Kay, F.G.Kondev, T.Lauritsen, C.J.Lister, E.A.McCutchan, A.M.Rogers, D.Seweryniak, I.Stefanescu, S.Zhu

Novel ΔJ = 1 Sequence in 78Ge: Possible Evidence for Triaxiality

NUCLEAR REACTIONS 238U(76Ge, X)78Ge, E=530 MeV; 198Pt, 208Pb(76Ge, X)78Ge, E=450 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E2). Comparison with available data and calculations.

doi: 10.1103/PhysRevLett.120.212501
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2018SI07      Phys.Rev. C 97, 035504 (2018)

K.Siegl, N.D.Scielzo, A.Czeszumska, J.A.Clark, G.Savard, A.Aprahamian, S.A.Caldwell, B.S.Alan, M.T.Burkey, C.J.Chiara, J.P.Greene, J.Harker, S.T.Marley, G.E.Morgan, J.M.Munson, E.B.Norman, R.Orford, S.Padgett, A.Perez Galvan, K.S.Sharma, S.Y.Strauss

Recoil ions from the β decay of 134Sb confined in a Paul trap

RADIOACTIVITY 134,134mSb(β-)[from 252Cf SF decay at CARIBU-ANL facility]; measured β, γ, singly-charged recoil ions, βγ-coin, β(ce)-coin, (recoils)β-coin, time-of-flight spectra for β(ion)-coin using Beta-decay Paul Trap (BPT); deduced charge-state distribution of the recoiling ions, mean electron loss, β-ν correlation coefficient (aβν), β-decay simulations, significant β-decay strength (17.2%) to high-lying excited states in 134Te to obtain an angular correlation consistent with expected value of unity for 0- to 0+ β transition. Comparison of the observed β-decay spectrum with that from the decay scheme in the ENSDF database or Nuclear Data Sheets for 134Sb g.s. decay. Comparison of mean atomic electron loss in 134Sb decay with that from the decays of noble gases 6He, 23Ne, 35Ar, 41Ar, 85Kr and 133Xe. 134,134mSb; half-lives used from literature and those determined at CARIBU-ANL facility (reference 23 in this work).

doi: 10.1103/PhysRevC.97.035504
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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.


2017AM01      Phys.Rev. C 95, 014330 (2017)

B.M.S.Amro, C.J.Lister, E.A.McCutchan, W.Loveland, P.Chowdhury, S.Zhu, A.D.Ayangeakaa, J.S.Barrett, M.P.Carpenter, C.J.Chiara, J.P.Greene, J.L.Harker, R.V.F.Janssens, T.Lauritsen, A.A.Sonzogni, W.B.Walters, R.Yanez

γ-ray spectroscopy of 209Tl

NUCLEAR REACTIONS 208Pb(136Xe, X)209Tl, E=785 MeV; measured Eγ, Iγ, γΓ-coin, delayed γ, half-lives of isomers using Gammasphere array at ATLAS-ANL facility. 209Tl; deduced levels, J, π, internal conversion coefficients, multipolarities, B(E2), configurations.

doi: 10.1103/PhysRevC.95.014330
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2017BO23      Phys.Lett. B 775, 271 (2017)

S.Bottoni, S.Zhu, R.V.F.Janssens, M.P.Carpenter, Y.Tsunoda, T.Otsuka, A.O.Macchiavelli, D.Cline, C.Y.Wu, A.D.Ayangeakaa, B.Bucher, M.Q.Buckner, C.M.Campbell, C.J.Chiara, H.L.Crawford, M.Cromaz, H.M.David, P.Fallon, A.Gade, J.P.Greene, J.Harker, A.B.Hayes, C.R.Hoffman, B.P.Kay, A.Korichi, T.Lauritsen, J.Sethi, D.Seweryniak, W.B.Walters, D.Weisshaar, A.Wiens

Nucleon correlations and the structure of 7130Zn41

NUCLEAR REACTIONS 70Zn(48Ca, 47Ca)71Zn, E=170 MeV; 197Au(70Zn, X)71Zn, E=430 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, decay scheme, J, π, modest oblate deformation. Comparison with Monte-Carlo shell-model calculations.

doi: 10.1016/j.physletb.2017.11.003
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2017BU07      Phys.Rev.Lett. 118, 152504 (2017)

B.Bucher, S.Zhu, C.Y.Wu, R.V.F.Janssens, R.N.Bernard, L.M.Robledo, T.R.Rodriguez, D.Cline, A.B.Hayes, A.D.Ayangeakaa, M.Q.Buckner, C.M.Campbell, M.P.Carpenter, J.A.Clark, H.L.Crawford, H.M.David, C.Dickerson, J.Harker, C.R.Hoffman, B.P.Kay, F.G.Kondev, T.Lauritsen, A.O.Macchiavelli, R.C.Pardo, G.Savard, D.Seweryniak, R.Vondrasek

Direct Evidence for Octupole Deformation in 146Ba and the Origin of Large E1 Moment Variations in Reflection-Asymmetric Nuclei

NUCLEAR REACTIONS 208Pb(146Ba, 146Ba'), E=659 MeV; measured reaction products, Eγ, Iγ. 144,146,148Ba; deduced energy levels, J, π, B(Eλ), quadrupole and octupole deformation parameters. Calculated HFB potential energy surfaces, neutron single-particle energies. Coulomb excitation, comparison with available data.

doi: 10.1103/PhysRevLett.118.152504
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2017DO01      Phys.Lett. B 766, 334 (2017)

D.T.Doherty, J.M.Allmond, R.V.F.Janssens, W.Korten, S.Zhu, M.Zielinska, D.C.Radford, A.D.Ayangeakaa, B.Bucher, J.C.Batchelder, C.W.Beausang, C.Campbell, M.P.Carpenter, D.Cline, H.L.Crawford, H.M.David, J.P.Delaroche, C.Dickerson, P.Fallon, A.Galindo-Uribarri, F.G.Kondev, J.L.Harker, A.B.Hayes, M.Hendricks, P.Humby, M.Girod, C.J.Gross, M.Klintefjord, K.Kolos, G.J.Lane, T.Lauritsen, J.Libert, A.O.Macchiavelli, P.J.Napiorkowski, E.Padilla-Rodal, R.C.Pardo, W.Reviol, D.G.Sarantites, G.Savard, D.Seweryniak, J.Srebrny, R.Varner, R.Vondrasek, A.Wiens, E.Wilson, J.L.Wood, C.Y.Wu

Triaxiality near the 110Ru ground state from Coulomb excitation

NUCLEAR REACTIONS 208Pb(110Ru, 110Ru'), E=430 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energy spectrum, B(E2) using GOSIA fit of the experimental data, level scheme, J, π, triaxial deformation. Comparison with available data.

doi: 10.1016/j.physletb.2017.01.031
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2017WE06      Phys.Lett. B 771, 119 (2017)

T.Welsh, W.Loveland, R.Yanez, J.S.Barrett, E.A.McCutchan, A.A.Sonzogni, T.Johnson, S.Zhu, J.P.Greene, A.D.Ayangeakaa, M.P.Carpenter, T.Lauritsen, J.L.Harker, W.B.Walters, B.M.S.Amro, P.Copp

Modeling multi-nucleon transfer in symmetric collisions of massive nuclei

NUCLEAR REACTIONS 198Pt(204Hg, X), E=1360 MeV; measured reaction products, Eγ, Iγ; deduced fragment yields, σ. Comparison with GRAZING and DNS models.

doi: 10.1016/j.physletb.2017.05.044
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2016AY01      Phys.Lett. B 754, 254 (2016)

A.D.Ayangeakaa, R.V.F.Janssens, C.Y.Wu, J.M.Allmond, J.L.Wood, S.Zhu, M.Albers, S.Almaraz-Calderon, B.Bucher, M.P.Carpenter, C.J.Chiara, D.Cline, H.L.Crawford, H.M.David, J.Harker, A.B.Hayes, C.R.Hoffman, B.P.Kay, K.Kolos, A.Korichi, T.Lauritsen, A.O.Macchiavelli, A.Richard, D.Seweryniak, A.Wiens

Shape coexistence and the role of axial asymmetry in 72Ge

NUCLEAR REACTIONS 208Pb(72Ge, 72Ge'), E=301 MeV; measured reaction products, Eγ, Iγ. 72Ge; deduced energy levels, J, π, reduced E2 matrix elements, B(E2) values. Comparison with available data.

doi: 10.1016/j.physletb.2016.01.036
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2016BU02      Phys.Rev.Lett. 116, 112503 (2016)

B.Bucher, S.Zhu, C.Y.Wu, R.V.F.Janssens, D.Cline, A.B.Hayes, M.Albers, A.D.Ayangeakaa, P.A.Butler, C.M.Campbell, M.P.Carpenter, C.J.Chiara, J.A.Clark, H.L.Crawford, M.Cromaz, H.M.David, C.Dickerson, E.T.Gregor, J.Harker, C.R.Hoffman, B.P.Kay, F.G.Kondev, A.Korichi, T.Lauritsen, A.O.Macchiavelli, R.C.Pardo, A.Richard, M.A.Riley, G.Savard, M.Scheck, D.Seweryniak, M.K.Smith, R.Vondrasek, A.Wiens

Direct Evidence of Octupole Deformation in Neutron-Rich 144Ba

NUCLEAR REACTIONS 208Pb(144Ba, 144Ba'), E=650 MeV; measured reaction products, Eγ, Iγ. 144Ba; deduced yields, E2 and E3 matrix elements, quadrupole moments, deformation parameters, B(E2), B(E3). Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.116.112503
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2016CR05      Phys.Lett. B 763, 108 (2016)

B.P.Crider, C.J.Prokop, S.N.Liddick, M.Al-Shudifat, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Chen, C.J.Chiara, H.M.David, A.C.Dombos, S.Go, R.Grzywacz, J.Harker, R.V.F.Janssens, N.Larson, T.Lauritsen, R.Lewis, S.J.Quinn, F.Recchia, A.Spyrou, S.Suchyta, W.B.Walters, S.Zhu

Shape coexistence from lifetime and branching-ratio measurements in 68, 70Ni

RADIOACTIVITY 70Co, 68Fe, 68Co(β-) [from 9Be(76Ge, X)70Co/68Fe]; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, T1/2, branching ratios, B(E2).

doi: 10.1016/j.physletb.2016.10.020
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2016MI02      Phys.Rev. C 93, 014306 (2016)

A.J.Mitchell, C.J.Lister, E.A.McCutchan, M.Albers, A.D.Ayangeakaa, P.F.Bertone, M.P.Carpenter, C.J.Chiara, P.Chowdhury, J.A.Clark, P.Copp, H.M.David, A.Y.Deo, B.DiGiovine, N.D'Olympia, R.Dungan, R.D.Harding, J.Harker, S.S.Hota, R.V.F.Janssens, F.G.Kondev, S.H.Liu, A.V.Ramayya, J.Rissanen, G.Savard, D.Seweryniak, R.Shearman, A.A.Sonzogni, S.L.Tabor, W.B.Walters, E.Wang, S.Zhu

ψ-soft 146Ba and the role of nonaxial shapes at N ≈ 90

RADIOACTIVITY 146Cs(β-)[from 252Cf SF and mass separation at CARIBU-ANL facility]; measured Eγ, Iγ, βγ-, βγγ-coin using SATURN detection system at ANL. 146Ba; deduced levels, J, π, limits of β- branching ratios. Level systematics in even-A N=90 isotones with Z=56-68, and those of g.s., β- and γ-bands in 146Ba, 148Ce, 150Nd. Investigation of nuclear shape transitions. Comparison with interacting boson approximation (IBA) model predictions.

doi: 10.1103/PhysRevC.93.014306
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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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2015BA20      Phys.Rev. C 91, 064615 (2015)

J.S.Barrett, W.Loveland, R.Yanez, S.Zhu, A.D.Ayangeakaa, M.P.Carpenter, J.P.Greene, R.V.F.Janssens, T.Lauritsen, E.A.McCutchan, A.A.Sonzogni, C.J.Chiara, J.L.Harker, W.B.Walters

136Xe+208Pb reaction: A test of models of multinucleon transfer reactions

NUCLEAR REACTIONS 208Pb(136Xe, X), E=85 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere at ATLAS-ANL facility, σ for projectile-like fragments (PLFs) and target-like fragments (TLFs) by off-line γ-ray spectroscopy for radioactive decay measurements (RD), prompt γ decays recorded during the beam burst (IB), and delayed γ decays recorded between the beam bursts (OB). 116,118Cd, 119,121In, 118,120,122,123,124,126Sn, 119,121,123,125,126,127,128,130Sb, 124,126,128,130,131,132,134Te, 127,128,129,130,131,132,133,135,136I, 128,130,132Xe, 133,134,135,136,137,138Xe, 131,132,133,134,136,137,139,141Cs, 130Ba, 132,134,136,138,139,140,141,142,143Ba, 132,135,136,137,139,140,143La, 136,138,139,140,141,142,143,144,145,146Ce, 139,141,142Pr, 140,142,143,144,145,146,147,148,149Nd, 142,143,145,147,149Pm, 145,146,147,148,149,150,151,152,154Sm, 147,149,151Eu, 152,154,156Gd, 156,158,160,162,164Dy, 160,161Er, 176Yb, 176,178,180,181,182Hf, 179,181Ta, 176,180,182,184,186,187W, 179,185,187Re, 186,188,190,191,192,194,197Os, 188,190,192Ir, 190,191,192,194,196,197,198,200,201,202Pt, 191,192,193,194,196,198,199Au, 194,196,198,200,202,203,204,205,206,208Hg, 196,197,198,199,201,202,203,204,205,206,207Tl, 198,201,202,203,204,206,207,208,209,210,211Pb, 199,201,202,203,204,205,206,207,209,211Bi, 202,204,205,206,207,208,209,210,212,213,214Po, 207,208,209,210,211,213At, 210,211,212,213,214,215,216,218Rn, 211,212,213,215,216Fr, 214Ra; deduced projectile-like fragment cumulative and independent production yields. Comparison with predictions of GRAZING model, and those of Zagrebaev and Greiner model using a quantitative metric. Discussed correlations between TLF and PLF yields.

doi: 10.1103/PhysRevC.91.064615
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2015CH25      Phys.Rev. C 91, 044309 (2015)

C.J.Chiara, D.Weisshaar, R.V.F.Janssens, Y.Tsunoda, T.Otsuka, J.L.Harker, W.B.Walters, F.Recchia, M.Albers, M.Alcorta, V.M.Bader, T.Baugher, D.Bazin, J.S.Berryman, P.F.Bertone, C.M.Campbell, M.P.Carpenter, J.Chen, H.L.Crawford, H.M.David, D.T.Doherty, A.Gade, C.R.Hoffman, M.Honma, F.G.Kondev, A.Korichi, C.Langer, N.Larson, T.Lauritsen, S.N.Liddick, E.Lunderberg, A.O.Macchiavelli, S.Noji, C.Prokop, A.M.Rogers, D.Seweryniak, N.Shimizu, S.R.Stroberg, S.Suchyta, Y.Utsuno, S.J.Williams, K.Wimmer, S.Zhu

Identification of deformed intruder states in semi-magic 70Ni

NUCLEAR REACTIONS 208Pb(70Zn, X)70Ni, E=440 MeV; measured Eγ, Iγ, prompt- and delayed-γ spectra, γγ-coin, γγ(θ) using Gammasphere array at ATLAS-ANL facility. 9Be(82Se, X)70Ni, E=140 MeV/nucleon; measured Eγ, Iγ, (70Ni)γ-, γγ-coin, prompt and delayed γ rays using S800 spectrograph, GRETINA and CsI(Na) arrays at NSCL-MSU facility. 70Ni; deduced levels, J, π. Comparison with Monte Carlo shell-model calculations.

NUCLEAR STRUCTURE 68,70Ni, 92Mo; calculated levels, J, π, potential-energy surface contours in (Q2, Q4) plane. Shell-model using jj44bpn, jj44pna, JUN45, and JUN45 effective interactions, and Monte Carlo shell-model with A3DA interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.044309
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2015DO07      Phys.Rev. C 92, 035808 (2015)

D.T.Doherty, P.J.Woods, D.Seweryniak, M.Albers, A.D.Ayangeakaa, M.P.Carpenter, C.J.Chiara, H.M.David, J.L.Harker, R.V.F.Janssens, A.Kankainen, C.Lederer, S.Zhu

Structure of resonances in the Gamow burning window for the 25Al(p, γ)26Si reaction in novae

NUCLEAR REACTIONS 24Mg(3He, n), E=10 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using Gammasphere array at ATLAS-ANL. 26Si; deduced levels, J, π, ΔJ, multipolarity, mirror assignments with levels in 26Mg. Comparison with sd-shell-model calculations. Relevance to 25Al(p, γ)26Si reaction of astrophysical interest, and Gamow burning window.

doi: 10.1103/PhysRevC.92.035808
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2015LI33      Phys.Rev. C 92, 024319 (2015); Erratum Phys.Rev. C 94, 069904 (2016)

S.N.Liddick, W.B.Walters, C.J.Chiara, R.V.F.Janssens, B.Abromeit, A.Ayres, A.Bey, C.R.Bingham, M.P.Carpenter, L.Cartegni, J.Chen, H.L.Crawford, I.G.Darby, R.Grzywacz, J.Harker, C.R.Hoffman, S.Ilyushkin, F.G.Kondev, N.Larson, M.Madurga, D.Miller, S.Padgett, S.V.Paulauskas, M.M.Rajabali, K.Rykaczewski, D.Seweryniak, S.Suchyta, S.Zhu

Analogous intruder behavior near Ni, Sn, and Pb isotopes

RADIOACTIVITY 69Fe, 69Co, 69Ni(β-)[from 9Be(78Kr, X), E=140 MeV/nucleon]; measured Eγ, Iγ, (ion)γ- and βγ- correlated events, half-lives of ground states of 69Co, 69Fe, and half-life of an isomer in 69Co, absolute intensities of γ rays from the decay of directly produced 69Co and that from the decay of 69Fe using BCS system and SEGA array at NSCL-MSU facility. 69Cu, 69Co; deduced levels in 69Cu, and isomer in 69Co, J, π, intruder configuration; identified and discussed proton particle-hole intruder states originating from excitations across Z=28. 68Fe, 68Co(β-); observed γ.

NUCLEAR REACTIONS 208Pb(70Zn, X)71Cu, E=440 MeV; measured Eγ, Iγ, γγ-coin using Gammasphere array at ATLAS-ANL facility. 71Cu; deduced high-spin levels, J, π, band; discussed systematics of level structure and proton particle-hole intruder states in 67,69,71Cu.

doi: 10.1103/PhysRevC.92.024319
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2015PR10      Phys.Rev. C 92, 061302 (2015)

C.J.Prokop, B.P.Crider, S.N.Liddick, A.D.Ayangeakaa, M.P.Carpenter, J.J.Carroll, J.Chen, C.J.Chiara, H.M.David, A.C.Dombos, S.Go, J.Harker, R.V.F.Janssens, N.Larson, T.Lauritsen, R.Lewis, S.J.Quinn, F.Recchia, D.Seweryniak, A.Spyrou, S.Suchyta, W.B.Walters, S.Zhu

New low-energy 0+ state and shape coexistence in 70Ni

RADIOACTIVITY 70,70mCo(β-)[from 9Be(76Ge, X), E=130 MeV/nucleon using A1900 fragment separator at NSCL-MSU]; measured Eγ, Iγ, βγγ-, γγ-coin, level half-life by βγ(t) using SeGA array and silicon PIN detectors. 70Ni; deduced levels, J, π, energy and half-life of excited (0+) state, configuration. Comparison with Monte Carlo shell-model calculations with A3DA interaction. 68Co, 69Ni, 70Zn; observed γ rays from decay of contaminants.

doi: 10.1103/PhysRevC.92.061302
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