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NSR database version of May 21, 2024.

Search: Author = R.Donangelo

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2022SO16      Phys.Rev. C 106, 034606 (2022)

S.R.Souza, R.Donangelo, W.G.Lynch, M.B.Tsang

Constraints from isoscaling on the source size in energetic heavy ion collisions

NUCLEAR REACTIONS 112Sn(124Sn, X)2H/3H/3He/4He/6Li/7Li, 124Sn(112Sn, X)2H/3H/3He/4He/6Li/7Li, T=5 MeV; calculated probability of observing selected product with a given multiplicity in each HI collision event, ratio between the probabilities of finding n fragments of a given reaction product in each event, produced by two similar sources. The probabilities used in the calculations are found to be well approximated by a Poisson distribution. Grand-canonical version of the statistical multifragmentation model. Comparison to experimental data.

doi: 10.1103/PhysRevC.106.034606
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2021LU08      Int.J.Mod.Phys. E30, 2150037 (2021)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, E.H.Wang, S.Frauendorf, W.Y.Liang, C.F.Jiao, Q.Wu, H.L.Liu, F.R.Xu, Y.X.Liu, Y.Sun, J.K.Hwang, S.H.Liu, S.J.Zhu, N.T.Brewer, I.Y.Lee, G.M.Ter-Akopian, Yu.Oganessian, A.V.Daniel, R.Donangelo, W.C.Ma

First observation of collective rotational bands in neutron-rich 142La and the study of octupole/triaxial deformations in 142, 143La

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ, γ-g.-coin. 142,143La; deduced γ-ray energies and intensities, J, π, yrast band, octupole deformation parameter. TRS model calculations.

doi: 10.1142/S0218301321500373
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2020SO20      Phys.Rev. C 102, 044611 (2020)

S.R.Souza, R.Donangelo

Isobar correlations bearing information on the properties of hot disassembling nuclear sources

doi: 10.1103/PhysRevC.102.044611
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2019SO12      Nucl.Phys. A989, 69 (2019)

S.R.Souza, B.V.Carlson, R.Donangelo

Post breakup dynamical evolution of fragments produced in nuclear multifragmentation

NUCLEAR REACTIONS 112Sn(112Sn, x)168Re; calculated proton, deuteron, triton multiplicity evolutions (and also those for 3He, 9,11,12,13C), d-d correlation function, d-d pair total momentum at initial moment and at long (infinite) time using hybrid model based on Statistical Multifragmentation Model (SMM) and GEMINI++ code

doi: 10.1016/j.nuclphysa.2019.05.017
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2018CA25      Phys.Rev. C 98, 044617 (2018)

L.F.Canto, R.Donangelo, M.S.Hussein, P.Lotti, J.Lubian, J.Rangel

Theoretical considerations about heavy-ion fusion in potential scattering

NUCLEAR REACTIONS 208Pb(16O, X), E(cm)=80-200 MeV; 12C(6Li, X), E(cm)=2-50 MeV; calculated fusion σ(E) as function of diffuseness parameter, radial parameters, imaginary potential strengths, and nuclear potentials using Wentzel, Kramers, and Brillouin (WKB) method, and optical model calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.044617
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2018KO22      Phys.Rev. C 98, 044604 (2018)

G.D.Kolinger, L.F.Canto, R.Donangelo, S.R.Souza

Semiclassical calculations of complete and incomplete fusion in collisions of weakly bound nuclei

NUCLEAR REACTIONS 159Tb, 197Au(6Li, X), (7Li, X), E(cm)=20-42 MeV; calculated complete fusion (CF) and total fusion (TF) σ(E) using an improved version of a semiclassical coupled-channels method. Comparison with experimental values, and with previous theoretical predictions.

doi: 10.1103/PhysRevC.98.044604
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2018SO02      Phys.Rev. C 97, 034614 (2018)

S.R.Souza, R.Donangelo, W.G.Lynch, M.B.Tsang

Dynamical and many-body correlation effects in the kinetic energy spectra of isotopes produced in nuclear multifragmentation

NUCLEAR REACTIONS 112Sn(112Sn, X), E not given; calculated kinetic energy spectra of Z=2-7, A=3-20 fragments, and compared to experimental data. 9Be(3He, X)12C*, E<150 MeV; calculated fusion σ(E). Hybrid model based on Monte-Carlo implementation of statistical multifragmentation model, with the Weisskopf-Ewing evaporation treatment for fragment de-excitation.

doi: 10.1103/PhysRevC.97.034614
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2018SO06      Phys.Rev. C 97, 054619 (2018)

S.R.Souza, R.Donangelo

Isotopic dependence of the fragments' internal temperatures determined from multifragment emission

NUCLEAR REACTIONS 112Sn(112Sn, X), (112Ba, X), E*=4, 10 MeV/nucleon; calculated excitation energy distribution, internal temperatures and density of states for light primary fragments from breakup of excited 112Sn and 112Ba using the statistical multifragmentation model with discrete energy (SMM-DE); deduced mass dependence of fragment internal temperature.

doi: 10.1103/PhysRevC.97.054619
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2017RA17      Phys.Rev. C 96, 034602 (2017)

H.A.Radi, J.O.Rasmussen, R.J.Donangelo

Semiclassical calculations for the 156Gd (p, d) reaction

NUCLEAR REACTIONS 156Gd(p, d), (p, p), E=25 MeV; calculated real optical potentials (central + spin-orbit) for protons and deuterons, final deflection angles of 276, 983 protons and deuterons with respect to proton impact parameter, imaginary optical potentials protons and deuteron, survival probability as a function of impact parameter for protons and deuterons, angular distributions for deuterons and elastically scattered protons. 156,158Gd(p, d), E=25 MeV; calculated σ(θ) for L=0 transfer for deuterons corresponding to dominant 1/2[400] configuration, and compared with experimental data, and with DWBA calculations. Semiclassical calculations for neutron-pickup and proton elastic scattering, and three-body quantum approach.

doi: 10.1103/PhysRevC.96.034602
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2017SO11      Phys.Rev. C 96, 014616 (2017)

S.R.Souza, M.B.Tsang, R.Donangelo

Many-particle correlations and Coulomb effects on temperatures from fragment momentum fluctuations

doi: 10.1103/PhysRevC.96.014616
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2017TO17      Phys.Rev. C 96, 064615 (2017)

A.J.Toubiana, L.F.Canto, R.Donangelo, M.S.Hussein

Scattering and fusion of identical heavy ions with arbitrary spin

NUCLEAR REACTIONS 4He(α, α), (α, X), E=1.0, 1.5 MeV; calculated transverse isotropy (TI) energy and barrier height. 6Li(6Li, 6Li), (6Li, X), E(cm)=1-10 MeV; 7Li(7Li, 7Li), (7Li, X), E(cm)=1-15 MeV; 10B(10B, 10B), (10B, X), E(cm)=4.8, 7.8, 9.0 MeV; calculated transverse isotropy (TI) energy, barrier height, second derivatives of the differential σ for elastic scattering, angular distributions, fusion σ(E) and oscillations in energy in the fusion cross section. 12C(12C, 12C), (12C, X), VB=6.1 MeV; 24Mg(24Mg, 24Mg), (24Mg, X), VB=21.8 MeV; calculated barrier parameters. Akyuz-Winther (AW) and Woods-Saxon (WS) potential parametrizations.

doi: 10.1103/PhysRevC.96.064615
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2016HU03      Few-Body Systems 57, 195 (2016)

M.S.Hussein, L.F.Canto, R.Donangelo, W.Mittig

Disappearance of Mott Oscillations in-Sub-barrier Elastic Scattering of Identical Nuclei and Atomic Ions

NUCLEAR REACTIONS 4He(α, α), 6li(6Li, 6Li), 10B(10B, 10B), E<10 MeV; calculated Mott oscillations, transverse isotropy, critical value of Sommerfeld parameter. Comparison with available data.

doi: 10.1007/s00601-015-1041-5
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2015SO18      Phys.Rev. C 92, 024612 (2015)

S.R.Souza, B.V.Carlson, R.Donangelo, W.G.Lynch, M.B.Tsang

Internal and kinetic temperatures of fragments in the framework of a nuclear statistical multifragmentation model

NUCLEAR STRUCTURE 40Ca, 80Zr, 120Nd; calculated breakup temperature as function of excitation energy (E*/A), internal temperature for selected fragments of 4He, 5Li, 10B, 12C, 16O, average excitation energy per nucleon of fragments as function of mass number A. Density of states of fragments from their internal temperatures and excitation energies. Statistical multifragmentation model.

doi: 10.1103/PhysRevC.92.024612
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2014CA42      Phys.Rev. C 90, 054616 (2014)

N.L.Calleya, S.R.Souza, B.V.Carlson, R.Donangelo, W.G.Lynch, M.B.Tsang, J.R.Winkelbauer

Influence of the density of states on the odd-even staggering in the charge distribution of the emitted fragments in nuclear heavy-ion collisions

NUCLEAR STRUCTURE 40Ca, 80Zr; calculated effect of density of states on odd-even staggering in charge distribution of fragments emitted in the breakup of 40Ca and 80Zr nuclei at E=1.5-4 MeV/nucleon excitation energies. Statistical Multifragmentation Model (SMM) considering pairing gaps for state densities.

doi: 10.1103/PhysRevC.90.054616
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2014LU07      Phys.Rev. C 89, 044326 (2014)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, E.Wang, Y.X.Liu, C.F.Jiao, W.Y.Liang, F.R.Xu, Y.Sun, S.Frauendorf, J.K.Hwang, S.H.Liu, S.J.Zhu, N.T.Brewer, I.Y.Lee, G.M.Ter-Akopian, Yu.Oganessian, R.Donangelo, W.C.Ma

First observation of a rotational band and the role of the proton intruder orbital π 1/2+[431] in very neutron-rich odd-odd 106Nb

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, 3- and 4-fold γγ-coin, coincidences with γ rays from complementary A=142-144 La isotopes , fission yield ratio using Gammasphere array at LBNL. 104,106Nb; deduced high-spin levels, J, π, rotational bands, alignment and moments of inertia plots, configurations. Comparison with projected shell model calculations. Role of 1/2[431] proton intruder orbital, and shape evolution.

NUCLEAR STRUCTURE 104,106Nb; calculated levels, J, π, potential energy surfaces (PES), configurations, alignments, moments of inertia. Projected shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.044326
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2014MA12      Phys.Rev. C 89, 034625 (2014)

H.D.Marta, L.F.Canto, R.Donangelo

Complete and incomplete fusion of weakly bound nuclei

NUCLEAR REACTIONS 209Bi(6Li, X), (7Li, X), E=25-50 MeV; calculated complete and total fusion σ(E), incomplete fusion + transfer σ(E). Semi-classical model to study the effect of breakup process in the fusion reaction of a weakly bound projectile with a heavy target. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.034625
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2013LU18      Nucl.Phys. A919, 67 (2013); Erratum Nucl.Phys. A983, 321 (2019)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, S.Frauendorf, J.K.Hwang, N.J.Stone, S.J.Zhu, N.T.Brewer, E.Wang, I.Y.Lee, S.H.Liu, G.M.Ter Akopian, A.V.Daniel, Yu.Ts.Oganessian, M.A.Stoyer, R.Donangelo, W.C.Ma, J.D.Cole, Y.Shi, F.R.Xu

New insights into the nuclear structure in neutron-rich 112, 114, 115, 116, 117, 118Pd

RADIOACTIVITY 252Cf(SF); measured fission fragments Eγ, Iγ(θ), γγ-coin using Compton-suppressed Ge detectors of Gammasphere array. 112,114,115,116,117,118Pd deduced levels, J, π, γ transitions, rotational bands, γ bands, triaxial deformation, wobbling, band crossing, backbanding, shape evolution; calculated deformation, shape evolution, band crossing using TRS (total Ruthian surface).

doi: 10.1016/j.nuclphysa.2013.10.002
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2013SO18      Phys.Rev. C 88, 014607 (2013)

S.R.Souza, B.V.Carlson, R.Donangelo, W.G.Lynch, M.B.Tsang

Statistical multifragmentation model with discretized energy and the generalized Fermi breakup: Formulation of the model

NUCLEAR REACTIONS 20Ne(20Ne, X)40Ca* at 2-7 MeV/nucleon; calculated yields distributions of Z=1-20 primary fragments from 40Ca breakup, total multiplicity as function of excitation energy. Generalized Fermi breakup model (GFBM). Comparison with GEMINI++ sequential decay code and Weisskopf-Ewing evaporation model. statistical multifragmentation model (SMM).

doi: 10.1103/PhysRevC.88.014607
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2012CA04      Nucl.Phys. A876, 77 (2012)

B.V.Carlson, R.Donangelo, S.R.Souza, W.G.Lynch, A.W.Steiner, M.B.Tsang

Fermi breakup and the statistical multifragmentation model

NUCLEAR REACTIONS 16O(p, X), E=62 MeV fragmentation; calculated charge, mass yields using Fermi breakup model and microcanonical statistical multifragmentation model.

doi: 10.1016/j.nuclphysa.2011.12.009
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2012LU01      Nucl.Phys. A874, 32 (2012)

Y.X.Luo, J.O.Rasmussen, C.S.Nelson, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, S.H.Liu, C.Goodin, N.J.Stone, S.J.Zhu, N.T.Brewer, Ke Li, I.Y.Lee, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, W.C.Ma, J.D.Cole

New high-spin level schemes and excitation modes of 117, 118, 119, 120, 122Cd

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. 117,118,119,120,122Cd deduced levels, J, π, quasi-rotational bands, configurations, B(E1), B(E2), angular correlations of γ in cascade; calculated yrast bands, B(E1), B(E2), deformation, triaxiality using various models and total Routhian surface, deformations, triaxiality.

doi: 10.1016/j.nuclphysa.2011.11.001
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2011CA34      J.Phys.:Conf.Ser. 312, 082017 (2011)

B.V.Carlson, R.Donangelo, S.R.Souza, W.G.Lynch, A.W.Steiner, M.B.Tsang

Fermi breakup and the Statistical Multifragmentation Model

NUCLEAR REACTIONS 16O(γ, X), E=50 MeV; calculated breakup Z=4-7 isotopes yields, σ using Fermi breakup model and statistical multifragmentation.

doi: 10.1088/1742-6596/312/4/082017
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2011LI34      Int.J.Mod.Phys. E20, 1825 (2011)

K.Li, H.Hamilton, A.V.Ramayya, S.H.Liu, X.Q.Zhang, N.T.Brewer, J.K.Hwang, C.Goodin, S.J.Zhu, Y.X.Luo, J.O.Rasmussen, I.Y.Lee, S.C.Wu, R.Donangelo, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.Unzhakova, J.D.Cole, W.C.Ma, M.A.Stoyer

Identification of high-spin states in neutron-rich 89, 90, 92Kr and 86Se

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ, γ-γ-γ-coin. 88,90,92Kr, 86Se; deduced level schemes, energies, J, π. Comparison with nuclear systematics and angular correlation measurements.

doi: 10.1142/S0218301311019635
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2010HW03      Phys.Rev. C 82, 034308 (2010)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, S.H.Liu, N.T.Brewer, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, R.Donangelo

High spin states in 151, 153Pr, 157Sm, and 93Kr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, (x ray)-γ coin, half-lives by γ(t) using Gammasphere array. 93Kr, 151,153Pr, 157Sm; deduced levels, J, π, bands, configurations, conversion coefficients, B(E1)/B(E2) ratios. 96,97,98,99Y, 149,150Pr; measured Eγ.

doi: 10.1103/PhysRevC.82.034308
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2010LU02      Nucl.Phys. A838, 1 (2010)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, S.H.Liu, E.F.Jones, P.M.Gore, C.Goodin, N.J.Stone, S.J.Zhu, J.K.Hwang, Ke Li, H.L.Crowell, I.Y.Lee, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, W.C.Ma, J.D.Cole

Octupole excitations in 141, 144Cs and the pronounced decrease of dipole moments with neutron number in odd-Z neutron-rich 141, 143, 144Cs

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, γγ(θ) using Gammasphere. 141,144Cs; deduced levels, J, p, conversion coefficients, multipolarities, bands, parity doublets, simplex structure, B(E1)/B(E2), dipole moment. Comparison with level structure of 143Cs and with systematics of adjacent N=85-92 nuclei. 105,106,107,108Tc; measured Eγ.

doi: 10.1016/j.nuclphysa.2010.03.003
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2009CA09      Phys.Rev. C 79, 037601 (2009)

L.F.Canto, R.Donangelo

Improved determination of the fusion barrier distribution

NUCLEAR REACTIONS 144Sm(16O, X); calculated fusion barrier distribution and uncertainties associated with barrier distributions.

doi: 10.1103/PhysRevC.79.037601
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2009HA15      Acta Phys.Pol. B40, 523 (2009)

J.H.Hamilton, Y.X.Luo, S.J.Zhu, J.O.Rasmussen, A.V.Ramayya, C.Goodin, K.Li, J.K.Hwang, S.Liu, D.Almehed, S.Frauendorf, V.Dimitrov, Jing-ye Zhang, X.L.Che, Z.Jang, I.Stefanescu, A.Gelberg, G.M.Ter-Akopian, A.V.Daniel, I.Y.Lee, H.-B.Ding, R.Q.Xu, J.-G.Wang, Q.Xu, M.A.Stoyer, R.Donangelo, N.J.Stone

New Band Structures in Neutron-Rich Mo and Ru Isotopes


2009LU01      Phys.Lett. B 670, 307 (2009); Erratum Phys.Lett. B 691, 285 (2010)

Y.X.Luo, S.J.Zhu, J.H.Hamilton, J.O.Rasmussen, A.V.Ramayya, C.Goodin, K.Li, J.K.Hwang, D.Almehed, S.Frauendorf, V.Dimitrov, Jing-ye Zhang, X.L.Che, Z.Jang, I.Stefanescu, A.Gelberg, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, J.D.Cole, N.J.Stone

Evolution of chirality from γ soft 108Ru to triaxial 110, 112Ru

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. 108,110,112Ru; deduced levels, J, π, rotational bands, B(E2)/B(M1). Tilted axis cranking and RPA calculations.

doi: 10.1016/j.physletb.2008.10.067
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2009LU04      Nucl.Phys. A818, 121 (2009)

Y.X.Luo, J.H.Hamilton, J.O.Rasmussen, A.V.Ramayya, C.Goodin, S.J.Zhu, J.K.Hwang, K.Li, D.Fong, I.Stefanescu, I.Y.Lee, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, W.C.Ma, J.D.Cole

New level schemes and octupole correlations of light neutron-rich lanthanum isotopes 143, 144La

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin and fission yield ratios of 103,104,105Nb, 143,144La using Gammasphere. 143,144La deduced levels, J, π, band configurations, branching ratios, B(E1)/B(E2) ratios. Cranked-shell model calculations.

doi: 10.1016/j.nuclphysa.2008.12.004
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2009LU11      Nucl.Phys. A825, 1 (2009)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, C.Goodin, S.J.Zhu, J.K.Hwang, K.Li, D.Fong, I.Stefanescu, I.Y.Lee, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, W.C.Ma, J.D.Cole

The first observation of a deformed Kπ = 1+ ground-state band in 100Nb and the high-spin level scheme of its 4n fission partner 148La

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin using Gammasphere array. 100Nb, 148La; deduced ICCs, high-spin levels, J, π, rotational bands, multipolarities, shape coexistence and configurations.

doi: 10.1016/j.nuclphysa.2009.04.006
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2009LU18      Int.J.Mod.Phys. E18, 1697 (2009)

Y.X.Luo, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, C.Goodin, K.J.Li, X.L.Che, J.K.Hwang, I.Y.Lee, Z.Jiang, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, S.Frauendorf, V.Dimitrov, J.-Y.Zhang, J.D.Cole, N.J.Stone, J.O.Rasmussen

Odd-parity bands of 108, 110, 112Ru

RADIOACTIVITY 252Cf(SF); 108,110,112Ru; measured Eγ, Iγ, γγγ-coin.; deduced level schemes, mixing ratios, bands, J, π, angular correlations, level energies, B(E1)/B(E2), chiral doubling. Comparison with other chiral doubling candidates.

doi: 10.1142/S0218301309013646
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2009SO07      Phys.Rev. C 79, 054602 (2009)

S.R.Souza, B.V.Carlson, R.Donangelo, W.G.Lynch, A.W.Steiner, M.B.Tsang

Statistical multifragmentation model with Skyrme effective interactions

NUCLEAR STRUCTURE 150Nd; calculated temperature and charge distributions for breakup of the nucleus, average multiplicity and yields of light particles Li, Be, B, C, N and O. 10Be, 20Ne, 31P, 40Ca; calculated internal free energy as a function of temperature. Statistical multifragmentation and Thomas-Fermi (SMM-TF) model with Skyrme interaction.

doi: 10.1103/PhysRevC.79.054602
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2009SO15      Phys.Rev. C 80, 041602 (2009)

S.R.Souza, M.B.Tsang, B.V.Carlson, R.Donangelo, W.G.Lynch, A.W.Steiner

Isospin effects and the density dependence of the nuclear symmetry energy

NUCLEAR REACTIONS 58Ni(40Ar, X), (40Ca, X), E not given; calculated isoscaling parameters as a function of the excitation energy of the source, and Isotopic distribution of primary fragments Li, Be, B, C, N and O using improved statistical multifragmentation model (ISMM), SLy4 and Gs Skyrme effective interactions.

doi: 10.1103/PhysRevC.80.041602
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2009SO16      Phys.Rev. C 80, 044606 (2009)

S.R.Souza, M.B.Tsang, B.V.Carlson, R.Donangelo, W.G.Lynch, A.W.Steiner

Temperature effects in nuclear isoscaling

doi: 10.1103/PhysRevC.80.044606
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2009ZH24      Int.J.Mod.Phys. E18, 1717 (2009)

S.J.Zhu, Y.X.Luo, J.H.Hamilton, A.V.Ramayya, X.L.Che, Z.Jiang, J.K.Hwang, J.L.Wood, M.A.Stoyer, R.Donangelo, J.D.Cole, C.Goodin, J.O.Rasmussen

Even-parity bands of 108, 110, 112Ru

RADIOACTIVITY 252Cf(SF); 108,110,112Ru; measured Eγ, Iγ, γγ-coin.; deduced high-spin, even-parity bands, branching ratios, odd-even spin energy band staggering, doubling of levels in 110Ru, deformation parameters, triaxiality. Comparison with TRS calculations.

doi: 10.1142/S0218301309013798
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2008LI45      Phys.Rev. C 78, 044317 (2008)

K.Li, J.H.Hamilton, A.V.Ramayya, S.J.Zhu, Y.X.Luo, J.K.Hwang, C.Goodin, J.O.Rasmussen, G.M.Ter-Akopian, A.V.Daniel, I.Y.Lee, S.C.Wu, R.Donangelo, J.D.Cole, W.C.Ma, M.A.Stoyer

Identification of new collective bands in neutron-rich 102Zr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin, angular correlations. 102Zr; deduced levels, J, π, bands.

doi: 10.1103/PhysRevC.78.044317
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2008MA41      Phys.Rev. C 78, 034612 (2008)

H.D.Marta, L.F.Canto, R.Donangelo

Semiclassical calculations of observable cross sections in breakup reactions

NUCLEAR REACTIONS 58Ni(8B, 7Be), E=26 MeV; calculated σ(θ) using semi-classical procedure. Comparison with experimental data.

doi: 10.1103/PhysRevC.78.034612
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2008SO13      Phys.Rev. C 78, 014605 (2008)

S.R.Souza, M.B.Tsang, R.Donangelo, W.G.Lynch, A.W.Steiner

Probing the symmetry energy from the nuclear isoscaling

doi: 10.1103/PhysRevC.78.014605
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2007CA29      Nucl.Phys. A787, 243c (2007)

L.F.Canto, R.Donangelo, M.S.Hussein

Theoretical treatments of fusion processes in collisions of weakly bound nuclei

NUCLEAR REACTIONS 208Pb(11Be, X), E(cm)=30-50 MeV; 208Pb(6He, X), (6Li, X), E not given; analyzed fusion σ. Continuum discretized coupled channels model.

doi: 10.1016/j.nuclphysa.2006.12.039
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2007LI21      Phys.Rev. C 75, 044314 (2007)

K.Li, Y.X.Luo, J.K.Hwang, A.V.Ramayya, J.H.Hamilton, S.J.Zhu, C.Goodin, H.L.Crowell, J.O.Rasmussen, I.Y.Lee, S.C.Wu, A.Covello, A.Gargano, R.Donangelo, G.M.Ter-Akopian, A.V.Daniel, J.D.Cole, W.C.Ma, M.A.Stoyer

Identification and shell model calculation of high spin states in 137, 138Cs nuclei

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 137,138Cs deduced high-spin levels, J, π, configurations. Gammasphere array, comparison with shell model predictions.

doi: 10.1103/PhysRevC.75.044314
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2007SO14      Phys.Rev. C 76, 024614 (2007)

S.R.Souza, R.Donangelo, W.G.Lynch, M.B.Tsang

Effects of geometric constraints on the nuclear multifragmentation process

doi: 10.1103/PhysRevC.76.024614
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2006AG06      Phys.Rev. C 73, 024613 (2006)

C.E.Aguiar, R.Donangelo, S.R.Souza

Nuclear multifragmentation within the framework of different statistical ensembles

NUCLEAR STRUCTURE 168Re; calculated thermodynamic quantities, isotopic yields from fragmentation of excited nucleus. Statistical multifragmentation model, results for three ensembles compared.

doi: 10.1103/PhysRevC.73.024613
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2006CA02      Phys.Rep. 424, 1 (2006)

L.F.Canto, P.R.S.Gomes, R.Donangelo, M.S.Hussein

Fusion and breakup of weakly bound nuclei

doi: 10.1016/j.physrep.2005.10.006
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2006CA03      Phys.Rep. 424, 1 (2006)

L.F.Canto, P.R.S.Gomes, R.Donangelo, M.S.Hussein

Fusion and breakup of weakly bound nuclei

doi: 10.1016/j.physrep.2005.10.006
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2006CA14      Phys.Rev. C 73, 034608 (2006)

L.F.Canto, R.Donangelo, H.D.Marta

Semiclassical treatment of fusion processes in collisions of weakly bound nuclei

NUCLEAR REACTIONS 238U(6He, X), E(cm)=15-35 MeV; calculated fusion σ. Semiclassical approach.

doi: 10.1103/PhysRevC.73.034608
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2006FO10      Phys.Atomic Nuclei 69, 1161 (2006)

D.Fong, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, C.Goodin, K.Li, J.Kormicki, J.O.Rasmussen, Y.X.Luo, S.C.Wu, I.Y.Lee, A.V.Daniel, G.M.Ter-Akopian, G.S.Popeko, A.S.Fomichev, A.M.Rodin, Yu.Ts.Oganessian, M.Jandel, J.Kliman, L.Krupa, J.D.Cole, M.A.Stoyer, R.Donangelo, W.C.Ma

Bimodal Fission in Binary and Ternary Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, αγ-coin; deduced fission fragment isotopic yields, neutron multiplicity distributions, evidence for "hot" mode. Gammasphere array.

doi: 10.1134/S1063778806070118
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14546.


2006GO20      Phys.Rev. C 74, 017309 (2006)

C.Goodin, D.Fong, J.K.Hwang, A.V.Ramayya, J.H.Hamilton, K.Li, Y.X.Luo, J.O.Rasmussen, S.C.Wu, M.A.Stoyer, T.N.Ginter, S.J.Zhu, R.Donangelo, G.M.Ter-Akopian, A.V.Daniel, G.S.Popeko, A.M.Rodin, A.S.Fomichev

New results for the intensity of bimodal fission in barium channels of the spontaneous fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, αγ-coin; deduced fission fragment isotopic yields, neutron multiplicity distributions. No "hot" fission mode seen.

doi: 10.1103/PhysRevC.74.017309
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2006HW04      Phys.Rev. C 74, 017303 (2006), Erratum Phys.Rev. C 106, 069901 (2022)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, J.O.Rasmussen, Y.X.Luo, D.Fong, K.Li, C.Goodin, S.J.Zhu, S.C.Wu, M.A.Stoyer, R.Donangelo, X.-R.Zhu, H.Sagawa

Identification of high spin states in 100Zr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 100Zr deduced high-spin levels, J, π. Gammasphere array.

doi: 10.1103/PhysRevC.74.017303
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2006JO01      Phys.Rev. C 73, 017301 (2006)

E.F.Jones, P.M.Gore, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, A.P.deLima, S.J.Zhu, C.J.Beyer, Y.X.Luo, W.C.Ma, J.O.Rasmussen, I.Y.Lee, S.C.Wu, T.N.Ginter, M.Stoyer, J.D.Cole, A.V.Daniel, G.M.Ter-Akopian, R.Donangelo

Identification of 88Se and new levels in 84, 86Se

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 84,86,88Se deduced levels, J, π. Gammasphere array.

doi: 10.1103/PhysRevC.73.017301
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2006LI21      Europhys.Lett. 74, 806 (2006)

T.X.Liu, W.G.Lynch, M.J.van Goethem, X.D.Liu, R.Shomin, W.P.Tan, M.B.Tsang, G.Verde, A.Wagner, H.F.Xi, H.S.Xu, W.A.Friedman, S.R.Souza, R.Donangelo, L.Beaulieu, B.Davin, Y.Larochelle, T.Lefort, R.T.de Souza, R.Yanez, V.E.Viola, R.J.Charity, L.G.Sobotka

Cooling dynamics in multi-fragmentation processes

NUCLEAR REACTIONS 112Sn(112Sn, X), E not given; measured fragments isotopic yields, kinetic energy spectra; deduced pre-equilibrium effects.

doi: 10.1209/epl/i2006-10040-x
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2006LU12      Phys.Rev. C 74, 024308 (2006)

Y.X.Luo, J.H.Hamilton, J.O.Rasmussen, A.V.Ramayya, I.Stefanescu, J.K.Hwang, X.L.Che, S.J.Zhu, P.M.Gore, E.F.Jones, D.Fong, S.C.Wu, I.Y.Lee, T.N.Ginter, W.C.Ma, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, A.Gelberg

Nuclear shape and structure in neutron-rich 110, 111Tc

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 110,111Tc deduced high-spin levels, J, π, configurations. Gammasphere array, cranking model calculations. Level systematics in neighboring nuclides discussed.

doi: 10.1103/PhysRevC.74.024308
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2006MA13      Phys.Rev. C 73, 024611 (2006)

H.D.Marta, R.Donangelo, J.O.Fernandez Niello, A.J.Pacheco

Continuum effects in transfer reactions induced by heavy ions

NUCLEAR REACTIONS 26F(27F, X), E(cm)=4-16 MeV; calculated break-up and one-neutron transfer σ; deduced continuum effects.

doi: 10.1103/PhysRevC.73.024611
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2005CA53      Braz.J.Phys. 35, 884 (2005)

L.F.Canto, R.Donangelo, H.D.Marta

Upper Bounds for Fusion Processes in Collisions of Weakly Bound Nuclei

NUCLEAR REACTIONS 238U(6He, X), 209Bi(7Li, X), E(cm) ≈ 10-30 MeV; calculated fusion σ, upper bounds for contributions from incomplete fusion and sequential complete fusion.

doi: 10.1590/S0103-97332005000500045
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2005FO09      Phys.Rev. C 72, 014315 (2005)

D.Fong, J.K.Hwang, A.V.Ramayya, J.H.Hamilton, Y.X.Luo, P.M.Gore, E.F.Jones, W.B.Walters, J.O.Rasmussen, M.A.Stoyer, S.J.Zhu, I.Y.Lee, A.O.Macchiavelli, S.C.Wu, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, J.D.Cole, R.Donangelo, W.C.Ma

Negative parity bands of 115Pd and band structures in 113, 115, 117Pd

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 113,115,117Pd deduced levels, J, π. Gammasphere array.

doi: 10.1103/PhysRevC.72.014315
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2005FO17      Eur.Phys.J. A 25, Supplement 1, 465 (2005)

D.Fong, J.K.Hwang, A.V.Ramayya, J.H.Hamilton, C.J.Beyer, K.Li, P.M.Gore, E.F.Jones, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, S.C.Wu, I.Y.Lee, P.Fallon, M.A.Stoyer, S.J.Asztalos, T.N.Ginter, J.D.Cole, G.M.Ter-Akopian, A.Daniel, R.Donangelo

Investigations of short half-life states from SF of 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 98Sr, 102,104Zr, 137Xe, 143Ba, 152Ce levels deduced T1/2. Gammasphere array, time-gated triple-coincidence method.

doi: 10.1140/epjad/i2005-06-176-y
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2005GO40      Eur.Phys.J. A 25, Supplement 1, 471 (2005)

P.M.Gore, E.F.Jones, J.H.Hamilton, A.V.Ramayya, X.Q.Zhang, J.K.Hwang, Y.X.Luo, K.Li, S.J.Zhu, W.C.Ma, J.O.Rasmussen, I.Y.Lee, M.Stoyer, J.D.Cole, A.V.Daniel, G.M.Ter-Akopian, Yu.Ts.Oganessian, R.Donangelo, J.B.Gupta

Unexpected rapid variations in odd-even level staggering in gamma-vibrational bands

NUCLEAR STRUCTURE 104,106,108Mo, 108,110,112Ru, 112,114,116Pd, 156,162,164,166,168,170Er; analyzed vibrational bands level energies, odd-even level staggering.

doi: 10.1140/epjad/i2005-06-178-9
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2005HW06      Eur.Phys.J. A 25, Supplement 1, 463 (2005)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, D.Fong, C.J.Beyer, K.Li, P.M.Gore, E.F.Jones, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, S.C.Wu, I.Y.Lee, M.A.Stoyer, J.D.Cole, G.M.Ter-Akopian, A.Daniel, R.Donangelo

Half-life measurement of excited states in neutron-rich nuclei

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 95,97Sr, 99Zr, 108Tc, 133,134Te, 137Xe levels deduced T1/2. Gammasphere array, time-gated triple-coincidence method.

doi: 10.1140/epjad/i2005-06-033-1
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2005JA12      Eur.Phys.J. A 24, 373 (2005)

M.Jandel, J.Kliman, L.Krupa, M.Morhac, J.H.Hamilton, J.Kormicki, A.V.Ramayya, J.K.Hwang, Y.X.Luo, D.Fong, P.Gore, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.M.Rodin, A.S.Fomichev, G.S.Popeko, A.V.Daniel, J.O.Rasmussen, A.O.Macchiavelli, M.A.Stoyer, R.Donangelo, J.D.Cole

Angular momenta of fission fragments in the α-accompanied fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, αγ-, γγ-coin for α-accompanied ternary fission; deduced fission fragments average angular momentum. 100,102Zr, 106Mo, 144,146Ba, 138,140,142Xe; deduced transition intensities. Gammasphere array.

doi: 10.1140/epja/i2004-10237-y
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2005LU21      J.Phys.(London) G31, 1303 (2005)

Y.X.Luo, J.O.Rasmussen, I.Stefanescu, A.Gelberg, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, S.J.Zhu, P.M.Gore, D.Fong, E.F.Jones, S.C.Wu, I.Y.Lee, T.N.Ginter, W.C.Ma, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo

Shape trends and triaxiality in neutron-rich odd-mass Y and Nb isotopes

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 99,101Y, 101,105Nb deduced levels, J, π, configurations, rotational bands, shape transition features. Gammasphere array, triaxial-rotor-plus-quasiparticle calculations.

doi: 10.1088/0954-3899/31/11/013
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2005LU24      Eur.Phys.J. A 25, Supplement 1, 469 (2005)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, A.Gelberg, I.Stefanescu, J.K.Hwang, S.J.Zhu, P.M.Gore, D.Fong, E.F.Jones, S.C.Wu, I.Y.Lee, T.N.Ginter, W.C.Ma, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo

Shape transitions and triaxiality in neutron-rich odd-mass Y and Nb isotopes

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 99,101Y, 101,105Nb deduced levels, J, π, configurations, deformation. Gammasphere array, triaxial-rotor-plus-particle calculations.

doi: 10.1140/epjad/i2005-06-044-x
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2004DA13      Phys.Rev. C 69, 041305 (2004)

A.V.Daniel, G.M.Ter-Akopian, J.H.Hamilton, A.V.Ramayya, J.Kormicki, G.S.Popeko, A.S.Fomichev, A.M.Rodin, Yu.Ts.Oganessian, J.D.Cole, J.K.Hwang, Y.X.Luo, D.Fong, P.Gore, M.Jandel, J.Kliman, L.Krupa, J.O.Rasmussen, S.C.Wu, I.Y.Lee, M.A.Stoyer, R.Donangelo, W.Greiner

Ternary fission of 252Cf: 3368 keV γ radiation from 10Be fragments

RADIOACTIVITY 252Cf(SF); measured light charged particle yields, kinetic energies, Eγ, Iγ, (particle)γ-coin following ternary fission. 10Be deduced transition, spin alignment, relative population probability of excited and ground states. Gammasphere array.

doi: 10.1103/PhysRevC.69.041305
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2004HA19      Nucl.Phys. A734, 257 (2004)

J.H.Hamilton, S.J.Zhu, A.V.Ramayya, P.M.Gore, J.O.Rasmussen, E.F.Jones, J.K.Hwang, R.Q.Xu, L.Y.Yang, K.Li, Z.Jiang, Z.Zhang, S.D.Ziao, X.Q.Zhang, J.Kormicki, Y.X.Luo, L.Chaturvedi, W.C.Ma, J.D.Cole, M.W.Drigert, I.Y.Lee, P.Fallon, M.A.Stoyer, T.N.Ginter, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian, R.Donangelo, V.Dimitrov, S.Frauendorf

New Insights Into Neutron Rich Nuclei From Fission

RADIOACTIVITY 252Cf(SF); analyzed prompt and delayed Eγ, Iγ, γγ-coin. 106,110,112Ru, 112,114,116Pd; deduced rotational band features. 104Mo deduced levels, J, π, chiral doublet bands. 104Zr, 152Ce, 158Sm deduced transitions T1/2, deformation parameters. Gammasphere array.

doi: 10.1016/j.nuclphysa.2004.01.048
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2004HW02      Phys.Rev. C 69, 057301 (2004)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, D.Fong, C.J.Beyer, P.M.Gore, E.F.Jones, Y.X.Luo, J.O.Rasmussen, S.J.Zhu, S.C.Wu, I.Y.Lee, P.Fallon, M.A.Stoyer, S.J.Asztalos, T.N.Ginter, J.D.Cole, G.M.Ter-Akopian, R.Donangelo

Half-lives of several states in neutron-rich nuclei from spontaneous fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ(t), γγ-coin. 99Zr, 108Tc, 133,134Te, 137Xe deduced levels T1/2. Gammasphere array, time-gated triple coincidence technique.

doi: 10.1103/PhysRevC.69.057301
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2004HW04      Phys.Rev. C 69, 067302 (2004), Erratum Phys.Rev. C 106, 059901 (2022)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, Y.X.Luo, J.O.Rasmussen, C.J.Beyer, P.M.Gore, S.C.Wu, I.Y.Lee, C.M.Folden, P.Fallon, P.Zielinski, K.E.Gregorich, M.A.Stoyer, T.N.Ginter, S.J.Zhu, J.D.Cole, R.Donangelo

High spin states in 95Sr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 95Sr deduced high-spin levels, J, π, configurations. Gammasphere array.

doi: 10.1103/PhysRevC.69.067302
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2004JO17      J.Phys.(London) G30, L43 (2004)

E.F.Jones, J.H.Hamilton, P.M.Gore, A.V.Ramayya, J.K.Hwang, A.P.deLima, S.J.Zhu, Y.X.Luo, C.J.Beyer, J.Kormicki, X.Q.Zhang, W.C.Ma, I.Y.Lee, J.O.Rasmussen, S.C.Wu, T.N.Ginter, P.Fallon, M.Stoyer, J.D.Cole, A.V.Daniel, G.M.Ter-Akopian, R.Donangelo, S.J.Asztalos, T.Cornelius, P.Fleischer, M.Bender, T.Burvenich, S.Schramm, J.A.Maruhn, P.-G.Reinhard

Identification of levels in 162, 164Gd and decrease in moment of inertia between N = 98-100

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 162,164Gd deduced levels, J, π, rotational bands. Collective features in neighboring nuclides discussed.

doi: 10.1088/0954-3899/30/12/L02
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2004LU03      Phys.Rev. C 69, 024315 (2004)

Y.X.Luo, S.C.Wu, J.Gilat, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, C.J.Beyer, S.J.Zhu, J.Kormicki, X.Q.Zhang, E.F.Jones, P.M.Gore, I-Y.Lee, P.Zielinski, C.M.Folden III, T.N.Ginter, P.Fallon, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, J.D.Cole, R.Donangelo, S.J.Asztalos, A.Gelberg

Level structures of 110, 111, 112, 113Rh from measurements on 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 110,111,112,113Rh deduced levels, J, π, configurations, deformation. Gammasphere array. Comparison with model predictions.

doi: 10.1103/PhysRevC.69.024315
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2004LU20      Phys.Rev. C 70, 044310 (2004)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, S.J.Zhu, P.M.Gore, S.C.Wu, I.Y.Lee, P.Fallon, T.N.Ginter, G.M.Ter-Akopian, A.V.Daniel, M.A.Stoyer, R.Donangelo, A.Gelberg

New level schemes with high-spin states of 105, 107, 109Tc

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 105,107,109Tc deduced high-spin levels, J, π, ICC, configurations, triaxial deformation. Gammasphere array.

doi: 10.1103/PhysRevC.70.044310
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset13944. Data from this article have been entered in the XUNDL database. For more information, click here.


2004SO07      Phys.Rev. C 69, 031607 (2004)

S.R.Souza, R.Donangelo, W.G.Lynch, W.P.Tan, M.B.Tsang

Isoscaling bearing information on the nuclear caloric curve

doi: 10.1103/PhysRevC.69.031607
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2004TE08      Yad.Fiz. 67, 1885 (2004); Phys.Atomic Nuclei 67, 1860 (2004)

G.M.Ter-Akopian, A.V.Daniel, A.S.Fomichev, G.S.Popeko, A.M.Rodin, Yu.Ts.Oganessian, J.H.Hamilton, A.V.Ramayya, J.Kormicki, J.K.Hwang, D.Fong, P.Gore, J.D.Cole, M.Jandel, J.Kliman, L.Krupa, J.O.Rasmussen, I.Y.Lee, A.O.Macchiavelli, P.Fallon, M.A.Stoyer, R.Donangelo, S.-C.Wu, W.Greiner

New Data on the Ternary Fission of 252Cf from the Gammasphere Facility

RADIOACTIVITY 252Cf(SF); measured light charged particle spectra, yields, Eγ, Iγ, (particle)γ-coin, fragment charge distributions following ternary fission. 10Be deduced transition, excited state population probability ratio. Gammasphere array.

doi: 10.1134/1.1811191
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2003CA39      Phys.Rev. C 68, 054614 (2003)

W.H.Z.Cardenas, L.F.Canto, N.Carlin, R.Donangelo, M.S.Hussein

Interplay of static and dynamic effects in 6He + 238U fusion

NUCLEAR REACTIONS 238U(α, X), (6He, X), E(cm)=15-35 MeV; calculated fusion σ, role of neutron halo and breakup channel effects.

doi: 10.1103/PhysRevC.68.054614
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2003HU14      Nucl.Phys. A722, 321c (2003)

M.S.Hussein, L.F.Canto, R.Donangelo

Fusion and breakup of halo nuclei

doi: 10.1016/S0375-9474(03)01384-8
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2003HW01      Phys.Rev. C 67, 014317 (2003), Erratum Phys.Rev. C 106, 049903 (2022)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, Y.X.Luo, J.O.Rasmussen, C.J.Beyer, P.M.Gore, S.C.Wu, I.Y.Lee, C.M.Folden III, P.Fallon, P.Zielinski, K.E.Gregorich, A.O.Macchiavelli, M.A.Stoyer, S.J.Asztalos, T.N.Ginter, R.Donangelo, L.Coraggio, A.Covello, A.Gargano, N.Itaco

High spin states in 93Sr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 93Sr deduced high-spin levels, J, π, configurations. Gammasphere array, comparisons with model predictions.

NUCLEAR STRUCTURE 90,92,93,94Sr; calculated levels, J, π. Shell model.

doi: 10.1103/PhysRevC.67.014317
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2003HW03      Phys.Rev. C 67, 054304 (2003), Erratum Phys.Rev. C 106, 049902 (2022)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, D.Fong, C.J.Beyer, P.M.Gore Y.X.Luo, J.O.Rasmussen, S.C.Wu, I.Y.Lee, C.M.Folden III, P.Fallon, P.Zielinski, K.E.Gregorich, A.O.Macchiavelli, M.A.Stoyer, S.J.Asztalos, T.N.Ginter, S.J.Zhu, J.D.Cole, G.M.Ter-Akopian, Yu.Ts.Oganessian, R.Donangelo

Identification of ν9/2[404] band in 97Sr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 97Sr deduced high-spin levels, J, π, T1/2, configurations. Gammasphere array.

doi: 10.1103/PhysRevC.67.054304
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2003HW08      Acta Phys.Hung.N.S. 18, 383 (2003)

J.K.Hwang, D.Fong, A.V.Ramayya, J.H.Hamilton, M.Jandel, C.J.Beyer, J.Kormicki, Y.X.Luo, P.Gore, J.Kliman, L.Krupa, M.Morhac, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.M.Rodin, A.S.Fomichev, G.S.Popeko, A.V.Daniel, J.O.Rasmussen, A.O.Macchiavelli, I.Y.Lee, M.A.Stoyer, R.Donangelo, J.D.Cole

Identification of Gamma Transitions from He and Be Ternary Fission Fragments

RADIOACTIVITY 252Cf(SF); measured ternary fission associated Eγ, Iγ, γγ-, αγ-, (10Be)γ-coin, fragment yields; deduced neutron multiplicity. 10Be deduced transition. Gammasphere array.

doi: 10.1556/APH.18.2003.2-4.46
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2003SO11      Phys.Rev. C 67, 051602 (2003)

S.R.Souza, P.Danielewicz, S.Das Gupta, R.Donangelo, W.A.Friedman, W.G.Lynch, W.P.Tan, M.B.Tsang

Mass parametrizations and predictions of isotopic observables

NUCLEAR STRUCTURE A=10-270; analyzed mass parameterizations, implications for yield predictions in multifragmentation reactions.

doi: 10.1103/PhysRevC.67.051602
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2003TA18      Phys.Rev. C 68, 034609 (2003)

W.P.Tan, S.R.Souza, R.J.Charity, R.Donangelo, W.G.Lynch, M.B.Tsang

Isospin effects in nuclear multifragmentation

NUCLEAR STRUCTURE 186Re; calculated fragment charge and mass distributions from decay of excited system, isotopic yields, calometric observables; deduced isospin effects. Improved statistical multifragmentation model.

doi: 10.1103/PhysRevC.68.034609
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2003ZH14      Phys.Rev. C 67, 064307 (2003), Erratum Phys.Rev. C 106, 049904 (2022)

Z.Zhang, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, R.Q.Xu, Z.Jiang, S.D.Xiao, X.Q.Zhang, J.Kormicki, P.M.Gore, E.F.Jones, W.C.Ma, J.D.Cole, M.W.Drigert, I.Y.Lee, J.O.Rasmussen, Y.X.Luo, T.N.Ginter, C.Folden, P.Fallon III, P.Zielinski, K.E.Gregorich, A.O.Macchiavelli, R.Donangelo, M.A.Stoyer

Identification of collective bands in neutron-rich 113Ru

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 113Ru deduced high-spin levels, J, π, configurations. Gammasphere array.

doi: 10.1103/PhysRevC.67.064307
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2002CA25      Nucl.Phys. A703, 633 (2002)

W.H.Z.Cardenas, L.F.Canto, R.Donangelo, M.S.Hussein, J.Lubian, A.Romanelli

Approximations in Fusion and Breakup Reactions Induced by Radioactive Beams

NUCLEAR REACTIONS 12C(11Li, X), E(cm)=0.5-5 MeV; calculated fusion, breakup σ. Effects of several numerical approximations discussed.

doi: 10.1016/S0375-9474(01)01672-4
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2002HA24      Yad.Fiz. 65, 677 (2002); Phys.Atomic Nuclei 65, 645 (2002)

J.H.Hamilton, A.V.Ramayya, J.K.Hwang, G.M.Ter-Akopian, A.V.Daniel, J.O.Rasmussen, S.-C.Wu, R.Donangelo, C.J.Beyer, J.Kormicki, X.Q.Zhang, A.M.Rodin, A.S.Fomichev, G.S.Popeko, J.Kliman, L.Krupa, M.Jandel, Yu.Ts.Oganessian, G.Chubarian, D.Seweryniak, R.V.F.Janssens, W.C.Ma, R.B.Piercey, W.Greiner, J.D.Cole

Cold and Hot Binary and Ternary Fission Yields in the Spontaneous Fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, (charged particle)γ-coin; deduced binary and ternary fission fragment yields, neutron multiplicities. Gammasphere array.

doi: 10.1134/1.1471267
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2002JA17      J.Phys.(London) G28, 2893 (2002)

M.Jandel, J.Kliman, L.Krupa, M.Morhac, J.H.Hamilton, J.Kormicki, A.V.Ramayya, J.K.Hwang, Y.X.Luo, D.Fong, P.Gore, G.M.Ter-Akopian, Yu.Ts.oganessian, A.M.Rodin, A.S.Fomichev, G.S.Popeko, A.V.Daniel, J.O.Rasmussen, A.O.Macchiavelli, M.A.Stoyer, R.Donangelo, J.D.Cole

Gamma-ray multiplicity distribution in ternary fission of 252Cf

RADIOACTIVITY 252Cf(SF); measured ternary fission associated Eγ, Iγ, light charged particle spectra, (particle)γ-, γγ-coin, γ-ray multiplicity distributions. Gammasphere array.

doi: 10.1088/0954-3899/28/12/301
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2002LU08      Phys.Rev. C66, 014305 (2002), Erratum Phys.Rev. C 107, 029902 (2023)

Y.X.Luo, J.O.Rasmussen, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, C.J.Beyer, S.J.Zhu, J.Kormicki, X.Q.Zhang, E.F.Jones, P.M.Gore, T.N.Ginter, K.E.Gregorich, I.-Y.Lee, A.O.Macchiavelli, P.Zielinski, C.M.Folden III, P.Fallon, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, M.A.Stoyer, J.D.Cole, R.Donangelo, S.C.Wu, S.J.Asztalos

Level Structure of 141Ba and 139Xe and the Level Systematics of N = 85 Even-Odd Isotones

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 141Ba, 139Xe deduced high-spin levels, possible J, π, configurations. Level systematics in neighboring isotones discussed. Gammasphere array.

doi: 10.1103/PhysRevC.66.014305
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2002MA01      Nucl.Phys. A697, 107 (2002)

H.D.Marta, R.Donangelo, J.O.Fernandez Niello, A.J.Pacheco

On the Slope Anomaly in Heavy-Ion Transfer Reactions

NUCLEAR REACTIONS 27Al(27Al, X), E=55-75 MeV; 197Au(12C, X), E=57-82 MeV; 197Au(16O, X), E=75-110 MeV; 98Mo(37Cl, X), E=118-125 MeV; 154Sm(16O, X), E=65, 72 MeV; calculated one- and two-proton transfer probabilities vs distance of closest approach. 96,100Mo(32S, 33S), (32S, 34S), E=180 MeV; 92Mo(36S, 34S), E=180 MeV; 208Pb(28Si, 30Si), E=152, 225 MeV; calculated transfer probabilities. Semiclassical model, comparisons with data, origin of slope anomaly in neutron transfers discussed.

doi: 10.1016/S0375-9474(01)01229-5
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2002MA53      Phys.Rev. C66, 024605 (2002)

H.D.Marta, L.F.Canto, R.Donangelo, P.Lotti

Validity of the semiclassical approximation for the breakup of weakly bound nuclei

NUCLEAR REACTIONS 58Ni(8B, p7Be), E=26 MeV; calculated breakup σ(θ). Semiclassical method, comparison with previous results.

doi: 10.1103/PhysRevC.66.024605
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2002WU03      Nucl.Instrum.Methods Phys.Res. A480, 776 (2002)

S.-C.Wu, R.Donangelo, J.O.Rasmussen, A.V.Daniel, J.K.Hwang, A.V.Ramayya, J.H.Hamilton

Resolution of Complex γ Spectra from Triple-Coincidence Data: Ba-Mo split in 252Cf spontaneous fission

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin; deduced correlated yields of Mo and Ba isotopes.

doi: 10.1016/S0168-9002(01)01232-3
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2001AB07      Nucl.Phys. A683, 279 (2001)

G.Abal, A.Romanelli, A.C.Sicardi-Schifino, R.Siri, R.Donangelo

Evaporation Effects in the One-Body Dissipation Mechanism

doi: 10.1016/S0375-9474(00)00475-9
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2001DO20      Comput.Phys.Commun. 140, 405 (2001)

R.Donangelo, K.Sneppen, S.R.Souza

A Computer Program for Statistical Multifragmentation of Nuclei

doi: 10.1016/S0010-4655(01)00209-0
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2001HA14      Acta Phys.Pol. B32, 957 (2001)

J.H.Hamilton, Y.X.Luo, J.K.Hwang, E.F.Jones, A.V.Ramayya, S.H.Zhu, P.M.Gore, C.J.Beyer, J.Kormicki, X.Q.Zhang, T.N.Ginter, M.G.Wang, J.D.Cole, M.W.Drigert, W.C.Ma, P.G.Varmette, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, J.Kliman, J.O.Rasmussen, I.Y.Lee, R.Donangelo, A.P.De Lima, and the GANDS95 Collaboration

Octupole Correlations and Deformation in Ba, La, and Pr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 141,144,145,146Ba, 145La, 147,149,151Pr deduced high-spin levels, J, π, octupole deformation.

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2001HA67      Acta Phys.Hung.N.S. 14, 161 (2001)

J.H.Hamilton, A.V.Ramayya, J.K.Hwang, G.M.Ter-Akopian, A.V.Daniel, T.N.Ginter, C.J.Beyer, J.Kormicki, X.Q.Zhang, A.M.Rodin, A.S.Fomichev, J.Kliman, L.Krupa, M.Jandel, Yu.Ts.Oganessian, W.Greiner, D.N.Poenaru, G.Chubaryan, D.Seweryniak, R.V.F.Janssens, J.O.Rasmussen, S.-C.Wu, R.Donangelo, W.C.Ma, R.B.Piercey, J.D.Cole

Behavior of Nuclear Matter under Extreme Conditions in Fission

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, (charged particle)γ-coin; deduced neutron multiplicity, fission fragments isotopic yields, long-lived nuclear molecules. Gammasphere array.

doi: 10.1556/APH.14.2001.1-4.16
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2001HW01      J.Phys.(London) G27, L9 (2001)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, L.K.Peker, J.D.Cole, I.Y.Lee, J.O.Rasmussen, R.Donangelo, and the GANDS95 Collaboration

Possible Semidecoupled Bands in 102Nb

NUCLEAR STRUCTURE 102Nb; analyzed rotational bands levels, J, π; deduced semi-decoupled configuration.

doi: 10.1088/0954-3899/27/1/102
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2001LU16      Phys.Rev. C 64, 054306 (2001); Erratum Phys.Rev. C 104, 069902 (2021)

Y.X.Luo, J.O.Rasmussen, A.V.Ramayya, J.H.Hamilton, X.Q.Zhang, J.K.Hwang, C.J.Beyer, J.Kormicki, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, K.E.Gregorich, T.N.Ginter, P.Zielinski, C.M.Folden, I.Y.Lee, P.Fallon, A.Macchiavelli, R.Donangelo, M.A.Stoyer, S.Asztalos, S.C.Wu

Fission γ Spectra and Levels in 139Ba

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 135Te, 139Ba deduced high-spin levels, J, π. Gammasphere array.

doi: 10.1103/PhysRevC.64.054306
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2001RA20      Prog.Part.Nucl.Phys. 46, 221 (2001)

A.V.Ramayya, J.H.Hamilton, J.K.Hwang, C.J.Beyer, G.M.Ter-Akopyan, A.V.Daniel, J.O.Rasmussen, S.-C.Wu, R.Donangelo, J.Kormicki, X.Q.Zhang, A.Rodin, A.Formichev, J.Kliman, L.Krupa, Yu.Ts.Oganessian, G.Chubaryan, D.Seweryniak, R.V.F.Janssens, W.C.Ma, R.B.Piercey, J.D.Cole

Binary and Ternary Fission Studies with 252Cf

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, (charged particle)γ-coin; deduced binary and ternary fission fragment yields. Gammasphere array.

doi: 10.1016/S0146-6410(01)00127-2
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2001TA30      Phys.Rev. C64, 051901 (2001)

W.P.Tan, B.-A.Li, R.Donangelo, C.K.Gelbke, M.-J.van Goethem, X.D.Liu, W.G.Lynch, S.Souza, M.B.Tsang, G.Verde, A.Wagner, H.S.Xu

Fragment Isotope Distributions and the Isospin Dependent Equation of State

NUCLEAR REACTIONS 112,124Sn(112Sn, X), 124Sn(124Sn, X), E=50 MeV/nucleon; analyzed fragments isotopic yield ratios, connection to asymmetry term in isospin dependent equation of state.

doi: 10.1103/PhysRevC.64.051901
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2001TS08      Phys.Rev. C64, 054615 (2001)

M.B.Tsang, C.K.Gelbke, X.D.Liu, W.G.Lynch, W.P.Tan, G.Verde, H.S.Xu, W.A.Friedman, R.Donangelo, S.R.Souza, C.B.Das, S.Das Gupta, D.Zhabinsky

Isoscaling in Statistical Models

NUCLEAR REACTIONS 112,124Sn(112Sn, X), (124Sn, X), E*=6 MeV/nucleon; calculated fragment multiplicities, isotopic yield ratios. Statistical multifragmentation models, comparison with data.

doi: 10.1103/PhysRevC.64.054615
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2001ZH05      Phys.Rev. C63, 027302 (2001)

X.Q.Zhang, J.H.Hamilton, A.V.Ramayya, S.J.Zhu, J.K.Hwang, C.J.Beyer, J.Kormicki, E.F.Jones, P.M.Gore, B.R.S.Babu, T.N.Ginter, R.Aryaeinejad, K.Butler-Moore, J.D.Cole, M.W.Drigert, J.K.Jewell, E.L.Reber, J.Gilat, I.Y.Lee, J.O.Rasmussen, A.V.Daniel, Yu.Ts.Oganessian, G.M.Ter-Akopian, W.C.Ma, P.G.Varmette, L.A.Bernstein, R.W.Lougheed, K.J.Moody, M.A.Stoyer, R.Donangelo, J.-Y.Zhang

Observation of a νh11/2 Pair Alignment in Neutron-Rich 118Pd

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 118Pd deduced high-spin levels, J, π, configurations. Gammasphere array.

doi: 10.1103/PhysRevC.63.027302
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2000HW03      Phys.Rev. C62, 044303 (2000), Erratum Phys.Rev. C 103, 059901 (2021)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, E.F.Jones, P.M.Gore, S.J.Zhu, C.J.Beyer, J.Kormicki, X.Q.Zhang, L.K.Peker, B.R.S.Babu, T.N.Ginter, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, W.C.Ma, P.G.Varmette, J.O.Rasmussen, I.Y.Lee, J.D.Cole, R.Aryaeinejad, M.W.Drigert, M.A.Stoyer, S.G.Prussin, R.Donangelo, H.C.Griffin

Possible Octupole Correlation in 147Pr and πh11/2 Bands in 149, 151Pr

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin following fission. 147,149,151Pr deduced high-spin levels, J, π, configurations. 147Pr deduced possible octupole correlations. Level structures and gamma rays in 147Pr and 151Pr nuclei reassigned by authors to 144La and 150Pr, respectively, in their papers 2009Lu04 for 144La and 2015Wa28 for 150Pr. Gammasphere array.

doi: 10.1103/PhysRevC.62.044303
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2000MA44      Phys.Rev. C61, 064610 (2000)

H.D.Marta, R.Donangelo, J.O.Fernandez Niello, A.J.Pacheco

One- and Two-Proton Transfer Reactions with Vibrational Nuclei

NUCLEAR REACTIONS 98Mo(37Cl, X), E=118, 122, 125 MeV; calculated one- and two-proton transfer probabilities. Semiclassical model with quadrupole vibrations, comparison with data.

doi: 10.1103/PhysRevC.61.064610
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2000SO16      Phys.Rev. C62, 064607 (2000)

S.R.Souza, W.P.Tan, R.Donangelo, C.K.Gelbke, W.G.Lynch, M.B.Tsang

Nuclear Isotope Thermometry

NUCLEAR STRUCTURE 112Sn; calculated isotopic yields associated with excited nucleus decay, related thermodynamic features; deduced role of secondary decay, implications for isotope thermometry.

doi: 10.1103/PhysRevC.62.064607
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2000WU06      Phys.Rev. C62, 041601 (2000)

S.-C.Wu, R.Donangelo, J.O.Rasmussen, A.V.Daniel, J.K.Hwang, A.V.Ramayya, J.H.Hamilton

New Determination of the Ba-Mo Yield Matrix for 252Cf

RADIOACTIVITY 252Cf(SF); measured γγ-coin, isotopic yields for correlated Mo, Ba fragment pairs. Gammasphere array, comparison with previous data.

doi: 10.1103/PhysRevC.62.041601
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1999AS05      Phys.Rev. C60, 044307 (1999)

S.J.Asztalos, I.Y.Lee, K.Vetter, B.Cederwall, R.M.Clark, M.A.Deleplanque, R.M.Diamond, P.Fallon, K.Jing, L.Phair, A.O.Macchiavelli, J.O.Rasmussen, F.S.Stephens, G.J.Wozniak, J.A.Becker, L.A.Bernstein, D.P.McNabb, P.F.Hua, D.G.Sarantites, J.X.Saladin, C.-H.Yu, J.A.Cizewski, R.Donangelo

Spin Yields of Neutron-Rich Nuclei from Deep Inelastic Reactions

NUCLEAR REACTIONS 176Yb(48Ca, X), 176Yb, 208Pb(154Sm, X), E ≈ 6 MeV/nucleon; measured Eγ, Iγ, γγ-, (fragment)γ-coin; deduced spin yield vs nucleon transfer, enhancement due to deep inelastic contributions. 172,173,174,175,176,177,178Yb, 173Tm, 152,153,154,155,156Sm deduced high-spin levels, J, π. Gammasphere, silicon strip detector.

doi: 10.1103/PhysRevC.60.044307
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1999ZH05      Phys.Rev. C59, 1316 (1999)

S.J.Zhu, J.H.Hamilton, A.V.Ramayya, M.G.Wang, J.K.Hwang, E.F.Jones, L.K.Peker, B.R.S.Babu, G.Drafta, W.C.Ma, G.L.Long, L.Y.Zhu, M.Li, C.Y.Gan, T.N.Ginter, J.Kormicki, J.K.Deng, D.T.Shi, W.E.Collins, J.D.Cole, R.Aryaeinejad, M.W.Drigert, J.O.Rasmussen, R.Donangelo, J.Gilat, S.Asztalos, I.Y.Lee, A.O.Macchiavelli, S.Y.Chu, K.E.Gregorich, M.F.Mohar, M.A.Stoyer, R.W.Lougheed, K.J.Moody, J.F.Wild, S.G.Prussin, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian

Octupole Correlations in Neutron-Rich 145, 147La Nuclei: Coriolis-limit-coupling bands with aligned h11/2 Proton

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 145,147La deduced high-spin levels, possible J, π, B(E1)/B(E2), octupole correlations. Cranked shell model analysis. Gammasphere array.

doi: 10.1103/PhysRevC.59.1316
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1999ZH31      Phys.Rev. C60, 051304 (1999)

S.J.Zhu, J.H.Hamilton, A.V.Ramayya, E.F.Jones, J.K.Hwang, M.G.Wang, X.Q.Zhang, P.M.Gore, L.K.Peker, G.Drafta, B.R.S.Babu, W.C.Ma, G.L.Long, L.Y.Zhu, C.Y.Gan, L.M.Yang, M.Sakhaee, M.Li, J.K.Deng, T.N.Ginter, C.J.Beyer, J.Kormicki, J.D.Cole, R.Aryaeinejad, M.W.Drigert, J.O.Rasmussen, S.Asztalos, I.Y.Lee, A.O.Macchiavelli, S.Y.Chu, K.E.Gregorich, M.F.Mohar, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian, R.Donangelo, M.A.Stoyer, R.W.Lougheed, K.J.Moody, J.F.Wild, S.G.Prussin, J.Kliman, H.C.Griffin

Octupole Correlations in Neutron-Rich 143, 145Ba and a Type of Superdeformed Band in 145Ba

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 143,145Ba deduced high-spin levels, J, π, B(E1)/B(E2), possible stable octupole deformation. Gammasphere array.

doi: 10.1103/PhysRevC.60.051304
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