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NSR database version of May 24, 2024.

Search: Author = P.D.Stevenson

Found 57 matches.

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2024ST01      Nuovo Cim. C 47, 26 (2024)

P.D.Stevenson, Abhishek, Y.Shi

Isoscalar giant monopole resonance in Mo-100: TDHF calculations and ground state deformation

NUCLEAR STRUCTURE 100Mo; calculated strength functions for the isoscalar giant monopole resonance using Hartree-Fock with Skyrme effective interaction. Comparison with available data.

doi: 10.1393/ncc/i2024-24026-y
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2023MO04      Phys.Lett. B 838, 137675 (2023)

L.Morrison, K.Hadynska-Klek, Zs.Podolyak, L.P.Gaffney, M.Zielinska, B.A.Brown, H.Grawe, P.D.Stevenson, T.Berry, A.Boukhari, M.Brunet, R.Canavan, R.Catherall, J.Cederkall, S.J.Colosimo, J.G.Cubiss, H.De Witte, D.T.Doherty, Ch.Fransen, G.Georgiev, E.Giannopoulos, M.Gorska, H.Hess, L.Kaya, T.Kroll, N.Lalovic, B.Marsh, Y.Martinez Palenzuela, G.O'Neill, J.Pakarinen, J.P.Ramos, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Rudigier, M.Siciliano, E.C.Simpson, J.Snall, P.Spagnoletti, S.Thiel, N.Warr, F.Wenander, R.Zidarova

Quadrupole and octupole collectivity in the semi-magic nucleus 20680Hg126

NUCLEAR REACTIONS 94Mo, 104Pd(206Hg, 206Hg'), E=4.195 MeV/nucleon; measured reaction products, Eγ, Iγ. 206Hg; deduced γ-ray energies, B(E2), B(E3). Comparison with shell model predictions, systematics. The HIE-ISOLDE facility at CERN.

doi: 10.1016/j.physletb.2023.137675
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2023SH07      Chin.Phys.C 47, 034105 (2023)

Y.Shi, P.D.Stevenson

Isoscalar monopole strength in 100Mo: an indicator for static triaxial deformation in the ground state

NUCLEAR STRUCTURE 100Mo; calculated the isoscalar monopole (ISM) mode, static potential-energy-surface (PES) using deformation constraint symmetry-unrestricted three-dimensional time-dependent density functional theory (TDDFT).

doi: 10.1088/1674-1137/acac6b
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2021BH10      J.Phys.(London) G48, 075105 (2021)

M.Bhuyan, B.Maheshwari, H.A.Kassim, N.Yusof, S.K.Patra, B.V.Carlson, P.D.Stevenson

The kinks in charge radii across N = 82 and 126 revisited

NUCLEAR STRUCTURE 126,128,130,132,134,136,138Sn, 202,204,206,208,210,212,214Pb; analyzed available data; deduced isotopic shift over the isotopic chains, energy levels, J, π, yrast states within the relativistic mean-field (RMF) and relativistic-Hartree-Bogoliubov (RHB) approach.

doi: 10.1088/1361-6471/abf7d7
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2021QI05      Phys.Rev. C 103, L031304 (2021)

Y.Qiang, J.C.Pei, P.D.Stevenson

Fission dynamics of compound nuclei: Pairing versus fluctuations

NUCLEAR REACTIONS 239Pu(n, F)240Pu*, E*=10.6, 16.1, 53.2 MeV; calculated detailed fission observables of compound 240Pu with TD-BCS plus thermal fluctuations: fission evolution time, mass of heavy fragments, proton and neutron numbers of heavy and light fragments, excitation energies of heavy and light fragments, total excitation energies of fragments, total kinetic energies TKE, the quadrupole and octupole deformations before scission, neutron and proton pairing energies. Time-dependent Hartree-Fock+BCS approach.

doi: 10.1103/PhysRevC.103.L031304
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2021WA31      Phys.Rev. C 103, 064305 (2021)

P.M.Walker, P.D.Stevenson

Configuration mixing and K-forbidden E2 decays

NUCLEAR STRUCTURE 171mTm, 175mLu, 171m,175mHf, 173m,175m,177m,179m,181m,185mTa, 179m,181m,183mW, 191mRe, 181mOs; analyzed reduced Weisskopf hindrance factors and two-level mixing strengths for K-forbidden E2 transitions from three-quasiparticle isomers; deduced significant configuration dependence.

doi: 10.1103/PhysRevC.103.064305
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2019WE15      Acta Phys.Pol. B50, 567 (2019)

K.Wen, M.C.Barton, A.Rios, P.D.Stevenson

Dissipation Dynamics of Nuclear Fusion Reactions

NUCLEAR REACTIONS 16O(16O, X)32S, E=40 MeV; collective potential, calculated friction coefficient and intrinsic excitation energy using time-dependent density matrix (TDDM) and time-dependent Hartree-Fock (TDHF) models.

doi: 10.5506/aphyspolb.50.567
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2018WE06      Phys.Rev. C 98, 014603 (2018)

K.Wen, M.C.Barton, A.Rios, P.D.Stevenson

Two-body dissipation effect in nuclear fusion reactions

NUCLEAR REACTIONS 16O(16O, X)32S*, E(cm)=20, 40 MeV; calculated total energy of the fusion system, collective potential, friction coefficient, and intrinsic excitation energy using time-dependent density matrix (TDDM) and time-dependent Hartree-Fock (TDHF) models. Dissipative dynamics.

doi: 10.1103/PhysRevC.98.014603
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2016GR15      Phys.Rev. C 94, 044327 (2016)

T.Grahn, S.Stolze, D.T.Joss, R.D.Page, B.Saygi, D.O'Donnell, M.Akmali, K.Andgren, L.Bianco, D.M.Cullen, A.Dewald, P.T.Greenlees, K.Heyde, H.Iwasaki, U.Jakobsson, P.Jones, D.S.Judson, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, N.Lumley, P.J.R.Mason, O.Moller, K.Nomura, M.Nyman, A.Petts, P.Peura, N.Pietralla, Th.Pissulla, P.Rahkila, P.J.Sapple, J.Saren, C.Scholey, J.Simpson, J.Sorri, P.D.Stevenson, J.Uusitalo, H.V.Watkins, J.L.Wood

Excited states and reduced transition probabilities in 168Os

NUCLEAR REACTIONS 92Mo(78Kr, 2p), E=335, 345, 348 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin, level half-lives by recoil-distance method using a plunger device, RITU separator, GREAT spectrometer, JUROGAM array at Jyvaskyla accelerator facility. 168Os; deduced high-spin levels, J, π, bands, B(E2), B(E1), transition quadrupole and dipole moments. Comparisons with interacting boson model (IBM-2) calculations based on the SkM* energy-density functional. Systematics of ground bands, and excited positive-parity level energies up to 8+ in 168,170,172,174,176,178,180,182,184Os.

doi: 10.1103/PhysRevC.94.044327
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2016RE07      Phys.Rev. C 93, 044618 (2016)

P.-G.Reinhard, A.S.Umar, P.D.Stevenson, J.Piekarewicz, V.E.Oberacker, J.A.Maruhn

Sensitivity of the fusion cross section to the density dependence of the symmetry energy

NUCLEAR REACTIONS 48Ca(48Ca, X)96Zr*, E(cm)=45-65 MeV; calculated folding model ion-ion interaction potentials, fusion σ(E). Impact of nuclear fusion on the nuclear equation of state (EOS). 48Ca; calculated Neutron root-mean-square radius (rms), neutron diffraction radius, and neutron halo. Dynamic microscopic method based on density-constrained time-dependent Hartree-Fock (DC-TDHF) approach, and direct TDHF study of barrier cross sections using a family of Skyrme parametrization.

doi: 10.1103/PhysRevC.93.044618
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2016ST13      Phys.Rev. C 93, 054617 (2016)

P.D.Stevenson, E.B.Suckling, S.Fracasso, M.C.Barton, A.S.Umar

Skyrme tensor force in heavy ion collisions

NUCLEAR REACTIONS 16O(16O, X), E(cm)=100 MeV; calculated contributions from terms involving time-odd densities and currents to the total energy as the sum of isoscalar and isovector contributions, energy contributions from (pseudo)scalar-, vector- and (pseudo)tensor-decomposed form of spin-current tensor J. Symmetry-unrestricted Time-dependent Hartree-Fock (TDHF) energy density functional calculations with full version of Skyrme force, including terms arising only from the Skyrme tensor force. Discussed role of Skyrme tensor force in dynamic processes in nuclei.

doi: 10.1103/PhysRevC.93.054617
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2013GO01      Phys.Rev.Lett. 110, 032503 (2013)

P.M.Goddard, P.D.Stevenson, A.Rios

Charge Radius Isotope Shift Across the N=126 Shell Gap

NUCLEAR STRUCTURE 210Po, 208,210Pb; calculated neutron single particle energies, isotope shifts in mean square charge radius, proton orbitals. NRAPRii parameterization, comparison with available data.

doi: 10.1103/PhysRevLett.110.032503
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2013GO19      Phys.Rev. C 88, 064308 (2013)

P.M.Goddard, N.Cooper, V.Werner, G.Rusev, P.D.Stevenson, A.Rios, C.Bernards, A.Chakraborty, B.P.Crider, J.Glorius, R.S.Ilieva, J.H.Kelley, E.Kwan, E.E.Peters, N.Pietralla, R.Raut, C.Romig, D.Savran, L.Schnorrenberger, M.K.Smith, K.Sonnabend, A.P.Tonchev, W.Tornow, S.W.Yates

Dipole response of 76Se above 4 MeV

NUCLEAR REACTIONS 76Se(polarized γ, γ'), E=4-9 MeV; measured Eγ, Iγ, γ(θ), integrated σ, γ(linear polarization) at HIγS facility at TUNL. 76Se; deduced levels, J, π, Γ, level half-lives, B(E1), B(M1), branching ratios. Comparison with theoretical calculations.

doi: 10.1103/PhysRevC.88.064308
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0187. Data from this article have been entered in the XUNDL database. For more information, click here.


2013MA66      Phys.Rev. C 88, 044301 (2013); see 2013MA74

P.J.R.Mason, Zs.Podolyak, N.Marginean, P.H.Regan, P.D.Stevenson, V.Werner, T.Alexander, A.Algora, T.Alharbi, M.Bowry, R.Britton, A.M.Bruce, D.Bucurescu, M.Bunce, G.Cata-Danil, I.Cata-Danil, N.Cooper, D.Deleanu, D.Delion, D.Filipescu, W.Gelletly, D.Ghita, I.Gheorghe, T.Glodariu, G.Ilie, D.Ivanova, S.Kisyov, S.Lalkovski, R.Lica, S.N.Liddick, R.Marginean, C.Mihai, K.Mulholland, C.R.Nita, A.Negret, S.Pascu, S.Rice, O.J.Roberts, T.Sava, J.F.Smith, P.-A.Soderstrom, L.Stroe, G.Suliman, R.Suvaila, S.Toma, C.Townsley, E.Wilson, R.T.Wood, M.Zhekova, C.Zhou

Half-life of the yrast 2+ state in 188W: Evolution of deformation and collectivity in neutron-rich tungsten isotopes

NUCLEAR REACTIONS 186W(7Li, pα), E=35 MeV; measured Eγ, γγ-coin, T1/2 of first 2+ state by γγ(t) at IFIN-HH, Bucharest facility. 188W; deduced level, B(E2) for first 2+ state, enhanced γ softness in 188W. Systematics of energies of low-lying 0+, 2+ and 4+ states and B(E2) values for first 2+ states in even-even Hf, W, Os and Pt nuclei with N=102-120.

NUCLEAR STRUCTURE 184,186,188,190,192,194W; calculated Woods-Saxon potential energy surface (PES) contours in (β, γ) plane; deduced prolate to oblate shape transition.

doi: 10.1103/PhysRevC.88.044301
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2013MA74      Phys.Rev. C 88, 044301 (2013); see 2013MA66

P.J.R.Mason, Zs.Podolyak, N.Marginean, P.H.Regan, P.D.Stevenson, V.Werner, T.Alexander, A.Algora, T.Alharbi, M.Bowry, R.Britton, A.M.Bruce, D.Bucurescu, M.Bunce, G.Cata-Danil, I.Cata-Danil, N.Cooper, D.Deleanu, D.Delion, D.Filipescu, W.Gelletly, D.Ghita, I.Gheorghe, T.Glodariu, G.Ilie, D.Ivanova, S.Kisyov, S.Lalkovski, R.Lica, S.N.Liddick, R.Marginean, C.Mihai, K.Mulholland, C.R.Nita, A.Negret, S.Pascu, S.Rice, O.J.Roberts, T.Sava, J.F.Smith, P.-A.Soderstrom, L.Stroe, G.Suliman, R.Suvaila, S.Toma, C.Townsley, E.Wilson, R.T.Wood, M.Zhekova, C.Zhou

Half-life of the yrast 2+ state in 188W: Evolution of deformation and collectivity in neutron-rich tungsten isotopes

doi: 10.1103/PhysRevC.88.044301
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2013PA02      Phys.Rev. C 87, 014330 (2013)

C.I.Pardi, P.D.Stevenson

Continuum time-dependent Hartree-Fock method for giant resonances in spherical nuclei

NUCLEAR STRUCTURE 4He, 16O, 40Ca; calculated time evolution of monopole (E0) moment for nuclear giant monopole resonances in the small and large amplitude regimes. Spherically symmetric time-dependent Hartree-Fock approximation discretized using a Crank-Nicholson scheme.

doi: 10.1103/PhysRevC.87.014330
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2012AL05      Phys.Rev. C 85, 034301 (2012); Pub.Note Phys.Rev. C 85, 039904 (2012)

N.Al-Dahan, P.H.Regan, Zs.Podolyak, P.M.Walker, N.Alkhomashi, G.D.Dracoulis, G.Farrelly, J.Benlliure, S.B.Pietri, R.F.Casten, P.D.Stevenson, W.Gelletly, S.J.Steer, A.B.Garnsworthy, E.Casarejos, J.Gerl, H.J.Wollersheim, J.Grebosz, M.Gorska, I.Kojouharov, H.Schaffner, A.Algora, G.Benzoni, A.Blazhev, P.Boutachkov, A.M.Bruce, I.J.Cullen, A.M.D.Bacelar, A.Y.Deo, M.E.Estevez, Y.Fujita, R.Hoischen, R.Kumar, S.Lalkovski, Z.Liu, P.J.Mason, C.Mihai, F.Molina, D.Mucher, B.Rubio, A.Tamii, S.Tashenov, J.J.Valiente-Dobon, P.J.Woods

Multiple Β- decaying states in 194Re: Shape evolution in neutron-rich osmium isotopes

NUCLEAR REACTIONS 9Be(208Pb, X)186Hf/187Hf/188Hf/189Hf/188Ta/189Ta/190Ta/191Ta/190W/191W/192W/193W/192Re/193Re/194Re/195Re/196Re/195Os/196Os/197Os/198Os, E=1 GeV/nucleon; measured fragment yields, ion identification by energy loss and time-of-flight methods; deduced decay properties. GSI FRagment Separator (FRS), RISING spectrometer.

RADIOACTIVITY 192,194Re[from 9Be(208Pb, X), E=1 GeV/nucleon](β-); 194Os[from 194Re decay](α); measured Eγ, Iγ, βγ-, (implants)γ-coin, recoil-decay tagging method, half-life. 194Os; deduced levels, J, π. 187Hf, 188,189,190Ta, 190,191W, 192,193Re(IT); measured Eγ, Iγ, half-lives. GSI FRagment Separator (FRS), RISING spectrometer. Systematics of low-lying 0+, 2+, 4+ and 6+ states in N=110-122 Os and W nuclei.

NUCLEAR STRUCTURE 194Re; calculated levels, J, π, configurations using Nilsson multi-quasiparticle (MQP) model.

doi: 10.1103/PhysRevC.85.034301
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Data from this article have been entered in the XUNDL database. For more information, click here.


2012DU06      Phys.Rev. C 85, 035201 (2012)

M.Dutra, O.Lourenco, J.S.Sa Martins, A.Delfino, J.R.Stone, P.D.Stevenson

Skyrme interaction and nuclear matter constraints

doi: 10.1103/PhysRevC.85.035201
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2012FR06      Phys.Rev. C 86, 044303 (2012)

S.Fracasso, E.B.Suckling, P.D.Stevenson

Unrestricted Skyrme-tensor time-dependent Hartree-Fock model and its application to the nuclear response from spherical to triaxial nuclei

NUCLEAR STRUCTURE 16O, 24Mg, 28Si, 120Sn, 178Os, 190W, 238U; calculated transition strength distributions of isovector giant dipole resonances using the Skyrme energy density functional (EDF) in the three dimensional time-dependent Hartree-Fock. Comparison with predictions from the (quasi)-particle random-phase approximation and experimental data.

doi: 10.1103/PhysRevC.86.044303
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2012LO10      Phys.Rev. C 86, 024608 (2012)

N.Loebl, A.S.Umar, J.A.Maruhn, P.-G.Reinhard, P.D.Stevenson, V.E.Oberacker

Single-particle dissipation in a time-dependent Hartree-Fock approach studied from a phase-space perspective

NUCLEAR REACTIONS 40Ca(40Ca, X), E(cm)=160, 200, 240 MeV; calculated β and γ deformation parameter, quadrupole moment, and volume phase-space global observables in momentum and coordinate space using the time-dependent Hartree-Fock (TDHF) theory and the Wigner distribution function in the full six-dimensional phase space. Significance of extra time-odd terms.

doi: 10.1103/PhysRevC.86.024608
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2012ST23      J.Phys.:Conf.Ser. 381, 012105 (2012)

P.D.Stevenson, S.Fracasso, E.B.Suckling

The tensor-kinetic field in nuclear collisions

doi: 10.1088/1742-6596/381/1/012105
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2011AV01      J.Phys.(London) G38, 025104 (2011)

M.Avgoulea, Yu.P.Gangrsky, K.P.Marinova, S.G.Zemlyanoi, S.Fritzsche, D.Iablonskyi, C.Barbieri, E.C.Simpson, P.D.Stevenson, J.Billowes, P.Campbell, B.Cheal, B.Tordoff, M.L.Bissell, D.H.Forest, M.D.Gardner, G.Tungate, J.Huikari, A.Nieminen, H.Penttila, J.Aysto

Nuclear charge radii and electromagnetic moments of radioactive scandium isotopes and isomers

NUCLEAR MOMENTS 42,43,44,45,46Sc; measured hyperfine structure; deduced nuclear magnetic dipole moments and electric quadrupole moments, isotope shifts, charge radii, deformation. Shell model calculation, laser spectroscopy.

NUCLEAR STRUCTURE 42,43,44,45,46Sc, 40,41,42,43,44,45,46,47,48Ca; calculated nuclear isomer shifts, radii, magnetic moment, spectroscopic quadrupole moments. Comparison with other data.

doi: 10.1088/0954-3899/38/2/025104
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Data from this article have been entered in the XUNDL database. For more information, click here.


2011NO05      Phys.Rev. C 83, 054303 (2011)

K.Nomura, T.Otsuka, R.Rodriguez-Guzman, L.M.Robledo, P.Sarriguren, P.H.Regan, P.D.Stevenson, Zs.Podolyak

Spectroscopic calculations of the low-lying structure in exotic Os and W isotopes

NUCLEAR STRUCTURE 186,188,190,192,194,196,198Os, 184,186,188,190,192,194,196W; calculated levels, J, π, B(E2), potential energy surfaces, g.s. and quasi γ bands. Interacting boson model (IBM) Hamiltonian determined by (constrained) Hartree-Fock-Bogoliubov calculations with the Gogny-D1S energy density functional (EDF). Comparison with experimental data.

doi: 10.1103/PhysRevC.83.054303
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2010BI03      Phys.Lett. B 690, 15 (2010)

L.Bianco, R.D.Page, I.G.Darby, D.T.Joss, J.Simpson, J.S.Al-Khalili, A.J.Cannon, B.Cederwall, S.Eeckhaudt, S.Erturk, B.Gall, M.B.Gomez Hornillos, T.Grahn, P.T.Greenlees, B.Hadinia, K.Heyde, U.Jakobsson, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Labiche, M.Leino, A.-P.Leppanen, M.Nyman, D.O'Donnell, E.S.Paul, M.Petri, P.Peura, A.Puurunen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, P.J.Sapple, J.Saren, C.Scholey, N.A.Smirnova, A.N.Steer, P.D.Stevenson, E.B.Suckling, J.Thomson, J.Uusitalo, M.Venhart

Discovery of 157W and 161Os

NUCLEAR REACTIONS 106Cd(58Ni, 3n), E=290, 310 MeV; measured reaction products; deduced α spectra, α-branching, T1/2, fine structure, ground state J, π.

RADIOACTIVITY 161Os(α), 157W(β+); measured decay products; deduced T1/2, β-branching. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2010.04.056
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Data from this article have been entered in the XUNDL database. For more information, click here.


2010CE01      J.Phys.(London) G37, 075107 (2010)

M.Centelles, S.K.Patra, X.Roca-Maza, B.K.Sharma, P.D.Stevenson, X.Vinas

The influence of the symmetry energy on the giant monopole resonance of neutron-rich nuclei analyzed in Thomas-Fermi theory

NUCLEAR STRUCTURE 90Zr, 208,266Pb; calculated neutron skin thickness, energy per particle, giant monopole resonance. Relativistic extended Thomas-Fermi method.

doi: 10.1088/0954-3899/37/7/075107
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2010ST16      J.Phys.:Conf.Ser. 205, 012027 (2010)

P.D.Stevenson, J.M.A.Broomfield

Testing a variational method for fluctuations

doi: 10.1088/1742-6596/205/1/012027
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2010SU09      Europhys.Lett. 90, 12001 (2010)

E.B.Suckling, P.D.Stevenson

The effect of the tensor force on the predicted stability of superheavy nuclei

NUCLEAR STRUCTURE 298Fl, 310126; calculated single-particle energies, proton shell structures, two-proton shell gap. Tensor component of the Skyrme nucleon-nucleon interaction.

doi: 10.1209/0295-5075/90/12001
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2010WA08      Phys.Rev. C 81, 041304 (2010)

P.M.Walker, S.Lalkovski, P.D.Stevenson

Configuration dependence of K-forbidden transition rates from three-quasiparticle isomers

NUCLEAR STRUCTURE 171Tm, 171,172,174,175,176,177,178Hf, 174Yb, 175Lu, 175,177,179,181,185Ta, 178,179,181,182,183W, 181,183Re, 181,184,191Os; analyzed reduced hindrance factors for K-forbidden E2 transitions from two- and three-quasiparticle isomers, NpNn correlations.

doi: 10.1103/PhysRevC.81.041304
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2008BR13      J.Phys.(London) G35, 095102 (2008)

J.M.A.Broomfield, P.D.Stevenson

Mass dispersions from giant dipole resonances using the Balian-Veneroni variational approach

NUCLEAR STRUCTURE 32S, 132Sn; calculated mass dispersions in giant dipole resonances; three dimensional TDHF method with Skyrme interaction.

doi: 10.1088/0954-3899/35/9/095102
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2008GU11      J.Phys.(London) G35, 075106 (2008)

R.K.Gupta, S.K.Patra, P.D.Stevenson, C.Beck, W.Greiner

Fission of hyper-hyperdeformed 56Ni: a clustering analysis within mean-field approaches

NUCLEAR STRUCTURE 56Ni; calculated binding energy, radii, matter density distributions; deduced alpha-clustering effect. Compared two models.

doi: 10.1088/0954-3899/35/7/075106
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2008RE14      Int.J.Mod.Phys. E17, Supplement 1, 8 (2008)

P.H.Regan, N.Alkhomashi, N.Al-Dahan, Zs.Podolyak, S.B.Pietri, S.J.Steer, A.B.Garnsworthy, E.B.Suckling, P.D.Stevenson, G.Farrelly, I.J.Cullen, W.Gelletly, P.M.Walker, J.Benlliure, A.I.Morales, E.Casajeros, M.E.Estevez, J.Gerl, M.Gorska, H.J.Wollersheim, P.Boutachkov, S.Tashenov, I.Kojouharov, H.Schaffner, N.Kurz, R.Kumar, B.Rubio, A.Algora, F.Molina, J.Grebosz, G.Benzoni, D.Mucher, A.M.Bruce, A.M.D.Bacelar, S.Lalkovski, Y.Fujita, A.Tamii, R.Hoischen, Z.Liu, P.J.Woods, C.Mihai, J.J.Valiente-Dobon

First results with the rising active stopper

doi: 10.1142/S0218301308011719
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2007GU20      Int.J.Mod.Phys. E16, 1721 (2007)

R.K.Gupta, S.K.Patra, P.D.Stevenson, W.Greiner

A highly neutron-rich cluster and/or a superheavy nucleus in the compound nucleus 238U+238U: A Mean field study

NUCLEAR REACTIONS 238U(238U, X), E not given; calculated neutron and proton matter density distributions, resonance state properties, clustering structures in the superheavy nucleus using a relativistic mean field and non-relativistic Hartree-Fock approach.

doi: 10.1142/S0218301307006137
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2007JO13      Phys.Rev. C 76, 047303 (2007)

G.A.Jones, P.H.Regan, P.M.Walker, Zs.Podolyak, P.D.Stevenson, M.P.Carpenter, J.J.Carroll, R.S.Chakrawarthy, P.Chowdhury, A.B.Garnsworthy, R.V.F.Janssens, T.L.Khoo, F.G.Kondev, G.J.Lane, Z.Liu, D.Seweryniak, N.J.Thompson, S.Zhu, S.J.Williams

Identification of a high-spin isomer in 99Mo

NUCLEAR REACTIONS 27Al(178Hf, X), E=1150 MeV; measured Eγ, Iγ, γγ-coin. 99Mo deduced levels, J, π, half-life, isomer, band structure.

doi: 10.1103/PhysRevC.76.047303
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2007PA27      Phys.Rev. C 75, 061302 (2007)

R.D.Page, L.Bianco, I.G.Darby, J.Uusitalo, D.T.Joss, T.Grahn, R.-D.Herzberg, J.Pakarinen, J.Thomson, S.Eeckhaudt, P.T.Greenlees, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, A.-P.Leppanen, M.Nyman, P.Rahkila, J.Saren, C.Scholey, A.Steer, M.B.Gomez Hornillos, J.S.Al-Khalili, A.J.Cannon, P.D.Stevenson, S.Erturk, B.Gall, B.Hadinia, M.Venhart, J.Simpson

α decay of 159Re and proton emission from 155Ta

RADIOACTIVITY 159Re(α) [from 106Cd(58Ni, X)]; 155Ta(p); measured Eα, Iα, Ep, Ip. deduced separation energies.

doi: 10.1103/PhysRevC.75.061302
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2007PA30      J.Phys.(London) G34, 2073 (2007)

S.K.Patra, R.K.Gupta, B.K.Sharma, P.D.Stevenson, W.Greiner

Exotic clustering in heavy and superheavy nuclei within the relativistic and non-relativistic mean field formalisms

NUCLEAR STRUCTURE 222Ra, 232U, 236Pu, 242Cm; Z=114; calculated binding energies, deformation parameters, and rms charge radii within the relativistic mean field approach and the non-relativistic Skyrme-Hartree-Fock formalism.

doi: 10.1088/0954-3899/34/9/016
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2007ST27      Nucl.Phys. A788, 343c (2007)

P.D.Stevenson, D.Almehed, P.-G.Reinhard, J.A.Maruhn

Monopole Giant Resonances and TDHF boundary conditions

doi: 10.1016/j.nuclphysa.2007.01.091
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2006BR26      Int.J.Mod.Phys. E15, 1417 (2006)

M.P.Brine, P.D.Stevenson, J.A.Maruhn, P.-G.Reinhard

Dipole response in neutron-rich magnesium

NUCLEAR STRUCTURE 34Mg; calculated isovector dipole response.

doi: 10.1142/S0218301306005009
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2006JO10      Phys.Lett. B 641, 34 (2006)

D.T.Joss, I.G.Darby, R.D.Page, J.Uusitalo, S.Eeckhaudt, T.Grahn, P.T.Greenlees, P.M.Jones, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, A.-P.Leppanen, M.Nyman, J.Pakarinen, P.Rahkila, J.Saren, C.Scholey, A.Steer, A.J.Cannon, P.D.Stevenson, J.S.Al-Khalili, S.Erturk, M.Venhart, B.Gall, B.Hadinia, J.Simpson

Probing the limit of nuclear existence: Proton emission from 159Re

NUCLEAR REACTIONS 106Cd(58Ni, 4np), E=300 MeV; measured Eα, Iα, Ep, Ip, (recoil)α-coin following residual nucleus decay. Recoil-decay correlation technique.

RADIOACTIVITY 159Re(p) [from 106Cd(58Ni, 4np)]; measured Ep, T1/2; deduced ground-state configuration.

doi: 10.1016/j.physletb.2006.08.014
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2006MA54      Phys.Rev. C 74, 027601 (2006)

J.A.Maruhn, P.-G.Reinhard, P.D.Stevenson, M.R.Strayer

Spin-excitation mechanisms in Skyrme-force time-dependent Hartree-Fock calculations

NUCLEAR REACTIONS 16O(16O, X), E(cm)=75-150 MeV; calculated energy loss, spin excitations, role of odd-odd couplings. Skyrme-force time-dependent Hartree-Fock calculations.

doi: 10.1103/PhysRevC.74.027601
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2006OR10      Phys.Rev. C 74, 034318 (2006)

J.N.Orce, A.M.Bruce, A.Emmanouilidis, A.P.Byrne, G.D.Dracoulis, T.Kibedi, M.Caamano, H.El-Masri, C.J.Pearson, Zs.Podolyak, P.D.Stevenson, P.M.Walker, F.R.Xu, D.M.Cullen, C.Wheldon

Shape-driving effects in the triaxial nucleus, 128Xe

NUCLEAR REACTIONS 124Sn(9Be, 5n), E=58 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 128Xe deduced high-spin levels, J, π, configurations, isomer T1/2, shape-driving effects. Caesar array. Potential energy surface calculations, configuration-constrained blocking method.

doi: 10.1103/PhysRevC.74.034318
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2006PE01      Nucl.Phys. A765, 29 (2006)

J.C.Pei, F.R.Xu, P.D.Stevenson

Deformation effects on the structures of N = 7 halo nuclei

NUCLEAR STRUCTURE 9He, 11Be, 13C, 15O; calculated particle density distributions, binding energies, radii. Skyrme-Hartree-Fock model.

doi: 10.1016/j.nuclphysa.2005.10.004
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2006SH01      J.Phys.(London) G32, L1 (2006)

B.K.Sharma, P.Arumugam, S.K.Patra, P.D.Stevenson, R.K.Gupta, W.Greiner

Clustering in superheavy nuclei within the relativistic mean field approach

NUCLEAR STRUCTURE 292,296,300,304120; calculated binding energies, deformation parameters, radii, matter density distributions; deduced cluster configurations. Relativistic mean field approach.

doi: 10.1088/0954-3899/32/1/L01
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2006SH20      J.Phys.(London) G32, 2089 (2006)

B.K.Sharma, S.K.Patra, R.K.Gupta, A.Shukla, P.Arumugam, P.D.Stevenson, W.Greiner

Reaction cross-sections for light nuclei on 12C using relativistic mean field formalism

NUCLEAR REACTIONS 12C(8B, X), (9B, X), (10B, X), (11B, X), (12B, X), (13B, X), (14B, X), (15B, X), (16B, X), (17B, X), (18B, X), (19B, X), (7Be, X), (8Be, X), (9Be, X), (10Be, X), (11Be, X), (12Be, X), (13Be, X), (14Be, X), (6Li, X), (7Li, X), (8Li, X), (9Li, X), (10Li, X), (11Li, X), E ≈ 800 MeV/nucleon; calculated reaction σ. Relativistic mean field approach.

NUCLEAR STRUCTURE 6,7,8,9,10,11Li, 10,11,12,13,14Be, 15,16,17B; calculated binding energies, deformation. Relativistic mean field approach.

doi: 10.1088/0954-3899/32/11/004
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2005AL41      J.Phys.(London) G31, S1819 (2005)

D.Almehed, P.D.Stevenson

Isovector giant monopole resonances in spherical nuclei

NUCLEAR STRUCTURE 90Zr, 100,120,132Sn, 140Ce, 208Pb; calculated isovector giant monopole resonance energies, energy-dependent mixing with isoscalar resonance. Time-dependent Hartree-Fock method, Skyrme forces.

doi: 10.1088/0954-3899/31/10/079
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2005CA02      Eur.Phys.J. A 23, 201 (2005)

M.Caamano, P.M.Walker, P.H.Regan, M.Pfutzner, Zs.Podolyak, J.Gerl, M.Hellstrom, P.Mayet, M.N.Mineva, A.Aprahamian, J.Benlliure, A.M.Bruce, P.A.Butler, D.Cortina Gil, D.M.Cullen, J.Doring, T.Enqvist, C.Fox, J.Garces Narro, H.Geissel, W.Gelletly, J.Giovinazzo, M.Gorska, H.Grawe, R.Grzywacz, A.Kleinbohl, W.Korten, M.Lewitowicz, R.Lucas, H.Mach, C.D.O'Leary, F.De Oliveira, C.J.Pearson, F.Rejmund, M.Rejmund, M.Sawicka, H.Schaffner, C.Schlegel, K.Schmidt, K.-H.Schmidt, P.D.Stevenson, Ch.Theisen, F.Vives, D.D.Warner, C.Wheldon, H.J.Wollersheim, S.Wooding, F.Xu, O.Yordanov

Isomers in neutron-rich A ≈ 190 nuclides from 208Pb fragmentation

NUCLEAR REACTIONS Be(208Pb, X), E=1 GeV/nucleon; measured fragments isotopic yields, delayed Eγ, γγ-, (particle)γ-coin; deduced isomer production ratios.

RADIOACTIVITY 188Ta, 190W, 192,193Re, 195Os, 197,198Ir, 200,201,202Pt, 203Au(IT) [from Be(208Pb, X)]; measured Eγ, Iγ, γγ-coin, T1/2. 188Ta, 190W, 192,193Re, 195Os, 197,198Ir, 200,201,202Pt, 203Au deduced transitions. 190W, 200,201,202Pt deduced levels, J, π. 174,175Er, 185Hf, 191,194Re, 199Ir(IT) [from Be(208Pb, X)]; measured Eγ, Iγ.

doi: 10.1140/epja/i2004-10079-7
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2005MA41      Phys.Rev. C 71, 064328 (2005)

J.A.Maruhn, P.G.Reinhard, P.D.Stevenson, J.Rikovska Stone, M.R.Strayer

Dipole giant resonances in deformed heavy nuclei

NUCLEAR STRUCTURE 132Sn, 142,144,146,148,150Nd, 152Dy, 188Os, 238U; calculated dipole strength distributions, resonance features, deformation dependence. Time-dependent Skyrme-Hartree-Fock method.

doi: 10.1103/PhysRevC.71.064328
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2005PE04      Phys.Rev. C 71, 034302 (2005)

J.C.Pei, F.R.Xu, P.D.Stevenson

Density distributions of superheavy nuclei

NUCLEAR STRUCTURE 254,256,258Rf, 258,260,266Sg, 264,266,270Hs, 270Ds, 284Cn, 288,298Fl, 292Lv; calculated deformation parameters, radii, Qα. 208Pb, 270,280,290Ds, 286,292,298,304,310Fl, 292120; calculated particle density distributions. Skyrme-Hartree-Fock model.

doi: 10.1103/PhysRevC.71.034302
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2005ST32      Phys.Rev. C 72, 047303 (2005)

P.D.Stevenson, M.P.Brine, Zs.Podolyak, P.H.Regan, P.M.Walker, J.Rikovska Stone

Shape evolution in the neutron-rich tungsten region

NUCLEAR STRUCTURE 180,182,184,186,188,190,192Yb, 182,184,186,188,190,192,194Hf, 184,186,188,190,192,194,196W, 186,188,190,192,194,196,198Os, 188,190,192,194,196,198,200Pt; calculated potential energy vs deformation, shape coexistence features; deduced role in level energy systematics. Self-consistent Hartree-Fock approach.

doi: 10.1103/PhysRevC.72.047303
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2005XU08      J.Phys.(London) G31, S1541 (2005)

F.R.Xu, J.C.Pei, P.D.Stevenson

Densities of superheavy nuclei at closed shells

NUCLEAR STRUCTURE Z=114; Z=120; Z=126; calculated matter density distributions.

doi: 10.1088/0954-3899/31/10/028
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2004ST06      Int.J.Mod.Phys. E13, 181 (2004)

P.D.Stevenson, M.R.Strayer, J.Rikovska Stone, W.G.Newton

Giant resonances from TDHF

NUCLEAR STRUCTURE 16O; calculated giant resonance strength functions. TDHF approach.

doi: 10.1142/S0218301304001928
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2003OR04      Acta Phys.Pol. B34, 2253 (2003)

J.N.Orce, A.M.Bruce, A.Emmanouilidis, C.Wheldon, F.R.Xu, P.M.Walker, M.Caamano, Zs.Podolyak, H.El-Masri, P.D.Stevenson, A.P.Byrne, G.D.Dracoulis, J.C.Hazel, T.Kibedi, D.M.Cullen

Interplay between K-isomerism and γ-softness in 128Xe

NUCLEAR REACTIONS 124Sn(9Be, 5n), E=58 MeV; measured prompt and delayed Eγ, Iγ, γγ-coin. 128Xe deduced levels, J, π, configurations, deformation effects. Potential energy surface calculations.


2003RA44      Phys.Rev. C 68, 044315 (2003)

A.K.Rath, P.D.Stevenson, P.H.Regan, F.R.Xu, P.M.Walker

Self-consistent description of dysprosium isotopes in the doubly midshell region

NUCLEAR STRUCTURE 160,162,164,166,168,170,172,174,176,178,180Dy; calculated binding energies, quadrupole deformations. 170Dy; calculated levels, J, π, configurations, rotational band features. Density-dependent Hartree-Fock approach, angular-momentum projection.

doi: 10.1103/PhysRevC.68.044315
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2003RI07      Phys.Rev. C 68, 034324 (2003)

J.Rikovska Stone, J.C.Miller, R.Koncewicz, P.D.Stevenson, M.R.Strayer

Nuclear matter and neutron-star properties calculated with the Skyrme interaction

doi: 10.1103/PhysRevC.68.034324
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2002OI03      Prog.Theor.Phys.(Kyoto), Suppl. 146, 609 (2002)

M.Oi, P.H.Regan, R.R.Xu, P.M.Walker, A.K.Rath, P.D.Stevenson

Cranked-Hartree-Fock-Bogoliubov Analysis at the Valence Maximum: Yrast Behaviour of 17066Dy104

NUCLEAR STRUCTURE 170Dy; calculated deformation vs angular momentum. Cranked-Hartree-Fock-Bogoliubov approach.

doi: 10.1143/PTPS.146.609
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2002RE11      Phys.Rev. C65, 037302 (2002)

P.H.Regan, F.R.Xu, P.M.Walker, M.Oi, A.K.Rath, P.D.Stevenson

Structure of the Doubly Midshell Nucleus 66170Dy104

NUCLEAR STRUCTURE 170Dy; calculated total Routhian surfaces, deformation features, rotational band moment of inertia.

doi: 10.1103/PhysRevC.65.037302
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2002SH21      Phys.Rev. C65, 064310 (2002)

T.Shizuma, P.D.Stevenson, P.M.Walker, Y.Toh, T.Hayakawa, M.Oshima, K.Furuno, T.Komatsubara

High-K Negative Parity States in 184Os

NUCLEAR REACTIONS 170Er(18O, 4n), E=85 MeV; measured Eγ, Iγ, γγ-coin. 184Os deduced high-spin levels, J, π, configurations, isomeric state T1/2. Cranked mean-field calculations.

doi: 10.1103/PhysRevC.65.064310
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2002ST30      Phys.Lett. 545B, 291 (2002)

P.D.Stevenson, J.Rikovska Stone, M.R.Strayer

Mean field calculation of Ne, Mg and Si nuclei at N = 20 with the separable monopole interaction

NUCLEAR STRUCTURE 28,30,32Ne, 30,32,34Mg, 32,34,36Si; calculated radii, quadrupole deformation parameters, single-particle levels; deduced shell-closure effects. 30,32,34Mg; calculated transitions B(E2). Mean-field approach, comparison with data.

doi: 10.1016/S0370-2693(02)02634-5
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