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NSR database version of April 11, 2024.

Search: Author = B.R.Barrett

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2019SM04      Phys.Rev. C 100, 054329 (2019)

N.A.Smirnova, B.R.Barrett, Y.Kim, I.J.Shin, A.M.Shirokov, E.Dikmen, P.Maris, J.P.Vary

Effective interactions in the sd shell

NUCLEAR STRUCTURE 18,19,21,23,25,26,27F, 21,22,23,24O, 22Na, 24Mg, 28,29Si, 32S, 39K; calculated levels, J, π, effective single-particle energies (ESPEs), B(E2) and Q(first 2+) for 24Mg, 28Si, 32S. 16,17,18,19,20,21,22,23,24,25,26,27,28O; calculated ground state energies relative to that of 16O, sub-shell gap and neutron spin-orbit splitting for even-A nuclei. No-core shell-model calculations with Okubo-Lee-Suzuki transformation, and microscopic effective shell-model interactions in the valence sd shell, obtained from chiral N3LO, JISP16, and Daejeon16 nucleon-nucleon potentials. Comparison with experimental data. Discussed possible role of the three-nucleon forces.

doi: 10.1103/PhysRevC.100.054329
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2015DI05      Phys.Rev. C 91, 064301 (2015)

E.Dikmen, A.F.Lisetskiy, B.R.Barrett, P.Maris, A.M.Shirokov, J.P.Vary

Ab initio effective interactions for sd-shell valence nucleons

NUCLEAR STRUCTURE 18,19F; calculated ground-state energies and energy levels, J, π using a double Okubo-Lee-Suzuki transformation within the ab initio no core shell model approach to generate microscopically the input for standard shell model calculations in the sd-shell, e.g. core and single-particle energies and two-body effective shell-model interactions. Comparison with exact no core shell model results yields good agreement.

doi: 10.1103/PhysRevC.91.064301
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2013BA02      Prog.Part.Nucl.Phys. 69, 131 (2013)

B.R.Barrett, P.Navratil, J.P.Vary

Ab initio no core shell model

doi: 10.1016/j.ppnp.2012.10.003
Citations: PlumX Metrics

2013BA34      J.Phys.:Conf.Ser. 445, 012002 (2013)


Microscopic calculations of nuclear structure beyond the 0p-shell

NUCLEAR STRUCTURE 4,8,9,10He; calculated levels, J, π using NCSM (No Core Shell Model) with different interactions and varying the number of basis states.

doi: 10.1088/1742-6596/445/1/012002
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2013KR03      Phys.Rev. C 87, 044301 (2013)

M.K.G.Kruse, E.D.Jurgenson, P.Navratil, B.R.Barrett, W.E.Ormand

Extrapolation uncertainties in the importance-truncated no-core shell model

NUCLEAR STRUCTURE 6Li; calculated distribution of ground-state energies, and other parameters. Importance-truncated no-core shell model (IT-NCSM), and NCSM calculations.

doi: 10.1103/PhysRevC.87.044301
Citations: PlumX Metrics

2013PA30      Phys.Rev. C 88, 044318 (2013)

G.Papadimitriou, J.Rotureau, N.Michel, M.Ploszajczak, B.R.Barrett

Ab initio no-core Gamow shell model calculations with realistic interactions

NUCLEAR STRUCTURE 3H, 4,5He; calculated ground-state energies, widths, asymptotic normalization coefficients (ANC), spectroscopic factors for well-bound and unbound states. No-core Gamow shell model (NCGSM), and density matrix renormalization group (DMRG) method with N3LO interaction. Benchmarking of results against Faddeev and Faddeev-Yakubovsky calculations for 3H and 4He.

doi: 10.1103/PhysRevC.88.044318
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2012BA14      Prog.Part.Nucl.Phys. 67, 521 (2012)


Extending the No Core Shell Model to heavier mass nuclei

NUCLEAR STRUCTURE 6,7Li, 8,9,10He; calculated ground state energy, quadrupole moments, energy levels, J, π. No Core Shell Model, comparison with available data.

doi: 10.1016/j.ppnp.2012.01.021
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2012RO07      Phys.Rev. C 85, 034003 (2012); Pub.Note Phys.Rev. C 85, 039903 (2012)

J.Rotureau, I.Stetcu, B.R.Barrett, U.van Kolck

Two and three nucleons in a trap, and the continuum limit

doi: 10.1103/PhysRevC.85.034003
Citations: PlumX Metrics

2009BA51      Nucl.Phys. A828, 267 (2009)

B.R.Barrett, B.G.Giraud, B.K.Jennings, N.P.Toberg

Concavity for nuclear bindings, thermodynamical functions and density functionals

doi: 10.1016/j.nuclphysa.2009.07.002
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2009LI31      Phys.Rev. C 80, 024315 (2009)

A.F.Lisetskiy, M.K.G.Kruse, B.R.Barrett, P.Navratil, I.Stetcu, J.P.Vary

Effective operators from exact many-body renormalization

NUCLEAR STRUCTURE 6Li; calculated levels, J, π, reduced two-body matrix elements, E2 reduced matrix elements and quadrupole moments using ab initio no-core shell model (NCSM) approach. 7,9Li; calculated absolute quadrupole moments and E2 transition matrix elements. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.024315
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2009NA13      J.Phys.(London) G36, 083101 (2009)

P.Navratil, S.Quaglioni, I.Stetcu, B.R.Barrett

Recent developments in no-core shell-model calculations

NUCLEAR STRUCTURE 3H, 4,6,8He, 6,7,8,9,10,11Li, 11Be, 7,8,9,10,11B, 12,13C, 16O;calculated rms radii, level energies, J, π, B(E1), quadrupole and magnetic moments.

NUCLEAR REACTIONS 7Be(p, γ), 3He, 3H(α, γ), E ≤ 1.5, 2.5 MeV; calculated S-factor, NCSM overlap functions.

doi: 10.1088/0954-3899/36/8/083101
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2008LI44      Phys.Rev. C 78, 044302 (2008)

A.F.Lisetskiy, B.R.Barrett, M.K.G.Kruse, P.Navratil, I.Stetcu, J.P.Vary

Ab-initio shell model with a core

NUCLEAR STRUCTURE 6,7Li, 8,9,10He; calculated excitation energies, J, π. Ab-initio no-core shell model calculations.

doi: 10.1103/PhysRevC.78.044302
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2007BA84      Int.J.Mod.Phys. A22, 4883 (2007)


Three nucleon forces and nuclear structure

NUCLEAR STRUCTURE 6,7Li; calculated excitation energies, J, π. Comparison with available data.

doi: 10.1142/S0217751X07038244
Citations: PlumX Metrics

2007QU02      Nucl.Phys. A790, 372c (2007)

S.Quaglioni, I.Stetcu, S.Bacca, B.R.Barrett, C.W.Johnson, P.Navratil, N.Barnea, W.Leidemann, G.Orlandini

Benchmark calculation of inclusive responses in the four-body nuclear system

NUCLEAR STRUCTURE 4He; calculated quadrupole response function. No-core shell model, effective interaction hyperspherical harmonic approach.

doi: 10.1016/j.nuclphysa.2007.03.068
Citations: PlumX Metrics

2007ST05      Nucl.Phys. A785, 307 (2007)

I.Stetcu, S.Quaglioni, S.Bacca, B.R.Barrett, C.W.Johnson, P.Navratil, N.Barnea, W.Leidemann, G.Orlandini

Benchmark calculation of inclusive electromagnetic responses in the four-body nuclear system

NUCLEAR STRUCTURE 4He; calculated ground-state energy, quadrupole and dipole response functions. No-core shell model, effective interaction hyperspherical harmonic approaches.

doi: 10.1016/j.nuclphysa.2006.12.047
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2006NE06      Phys.Rev.Lett. 97, 062502 (2006)

A.Negret, T.Adachi, B.R.Barrett, C.Baumer, A.M.van den Berg, G.P.A.Berg, P.von Brentano, D.Frekers, D.De Frenne, H.Fujita, K.Fujita, Y.Fujita, E.-W.Grewe, P.Haefner, M.N.Harakeh, K.Hatanaka, K.Heyde, M.Hunyadi, E.Jacobs, Y.Kalmykov, A.Korff, K.Nakanishi, P.Navratil, P.von Neumann-Cosel, L.Popescu, S.Rakers, A.Richter, N.Ryezayeva, Y.Sakemi, A.Shevchenko, Y.Shimbara, Y.Shimizu, Y.Tameshige, A.Tamii, M.Uchida, J.Vary, H.J.Wortche, M.Yosoi, L.Zamick

Gamow-Teller Strengths in the A = 14 Multiplet: A Challenge to the Shell Model

NUCLEAR REACTIONS 14N(d, 2p), E=175 MeV; 14N(3He, t), E=420 MeV; measured excitation energy spectra, σ(E, θ); deduced Gamow-Teller strength distributions. Comparison with no-core shell model predictions.

doi: 10.1103/PhysRevLett.97.062502
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2006NO04      Phys.Rev. C 73, 064002 (2006)

A.Nogga, P.Navratil, B.R.Barrett, J.P.Vary

Spectra and binding energy predictions of chiral interactions for 7Li

NUCLEAR STRUCTURE 7Li; calculated ground and excited states energies; deduced sensitivity to chiral interactions, three-nucleon force. No-core shell model approach.

doi: 10.1103/PhysRevC.73.064002
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2006ST06      Phys.Rev. C 73, 037307 (2006)

I.Stetcu, B.R.Barrett, P.Navratil, J.P.Vary

Long- and short-range correlations in the ab-initio no-core shell model

NUCLEAR STRUCTURE 4He, 12C; calculated longitudinal-longitudinal distribution functions, effective operators. No-core shell model, two-body cluster approximation.

doi: 10.1103/PhysRevC.73.037307
Citations: PlumX Metrics

2005BA29      Int.J.Mod.Phys. E14, 157 (2005)

B.R.Barrett, D.M.Cardamone, C.A.Stafford

Exactly solvable model for the decay of superdeformed nuclei

NUCLEAR STRUCTURE 152Dy, 194Hg; calculated spreading widths for decay out of superdeformed bands, tunneling matrix element. Two-level model.

doi: 10.1142/S0218301305002886
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2005BA67      J.Phys.(London) G31, S1349 (2005)


Theoretical approaches to many-body perturbation theory and the challenges

doi: 10.1088/0954-3899/31/8/013
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2005ST11      Int.J.Mod.Phys. E14, 95 (2005)

I.Stetcu, B.R.Barrett, P.Navratil, C.W.Johnson

Electromagnetic transitions with effective operators

NUCLEAR STRUCTURE 2H, 6Li; calculated transitions B(E2), B(M1). Effective operators.

doi: 10.1142/S0218301305002813
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2005ST14      Phys.Rev. C 71, 044325 (2005)

I.Stetcu, B.R.Barrett, P.Navratil, J.P.Vary

Effective operators within the ab initio no-core shell model

NUCLEAR STRUCTURE 4He, 6Li, 12C; calculated wave functions, transitions B(M1), B(E2). Effective operator formalism, no-core shell model.

doi: 10.1103/PhysRevC.71.044325
Citations: PlumX Metrics

2005ST35      Eur.Phys.J. A 25, Supplement 1, 489 (2005)

I.Stetcu, B.R.Barrett, P.Navratil, J.P.Vary

Effective operators in the NCSM formalism

NUCLEAR STRUCTURE 12C; calculated B(E2). No-core shell model.

doi: 10.1140/epjad/i2005-06-074-4
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2005VA32      Eur.Phys.J. A 25, Supplement 1, 475 (2005)

J.P.Vary, O.V.Atramentov, B.R.Barrett, M.Hasan, A.C.Hayes, R.Lloyd, A.I.Mazur, P.Navratil, A.G.Negoita, A.Nogga, W.E.Ormand, S.Popescu, B.Shehadeh, A.M.Shirokov, J.R.Spence, I.Stetcu, S.Stoica, T.A.Weber, S.A.Zaytsev

Ab initio No-Core Shell Model -- Recent results and future prospects

NUCLEAR STRUCTURE 4He; calculated radius. 6Li, 16O, 48Ar, 48K, 48Ca, 48Sc, 48Ti, 48V, 48Cr, 48Mn; calculated ground-state energies. 16O, 47Ca; calculated excited states energies. No-core shell model.

doi: 10.1140/epjad/i2005-06-214-x
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2004BB09      Nucl.Phys. A746, 579c (2004)

B.R.Barrett, P.Navratil, A.Nogga, W.E.Ormand, J.P.Vary

No-core shell-model calculations in light nuclei with three-nucleon forces

NUCLEAR STRUCTURE 6,7Li, 10B; calculated levels, J, π, three-nucleon force effects. No-core shell model.

doi: 10.1016/j.nuclphysa.2004.09.137
Citations: PlumX Metrics

2004NO11      Nucl.Phys. A737, 236 (2004)

A.Nogga, E.Epelbaum, P.Navratil, W.Glockle, H.Kamada, U.-G.Meissner, H.Witala, B.R.Barrett, J.P.Vary

Probing chiral interactions in light nuclei

NUCLEAR STRUCTURE 6Li; calculated binding energy, level energies, three-nucleon force effects. Chiral perturbation theory, no-core shell model.

doi: 10.1016/j.nuclphysa.2004.03.082
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2004VA29      Nucl.Phys. A746, 123c (2004)

J.P.Vary, B.R.Barrett, R.Lloyd, P.Navratil, A.Nogga, W.E.Ormand

Shell model in a first principles approach

NUCLEAR STRUCTURE 12C, 16O; calculated levels, J, π. No-core shell model, comparison with data.

doi: 10.1016/j.nuclphysa.2004.09.146
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2004ZH11      Phys.Rev. C 69, 034302 (2004)

H.Zhan, A.Nogga, B.R.Barrett, J.P.Vary, P.Navratil

Extrapolation method for the no-core shell model

NUCLEAR STRUCTURE 3H, 6Li; calculated binding energies. No-core shell model, extrapolation method.

doi: 10.1103/PhysRevC.69.034302
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2003AR07      Nucl.Phys. A720, 71 (2003)

S.Aroua, P.Navratil, L.Zamick, M.S.Fayache, B.R.Barrett, J.P.Vary, K.Heyde

Allowed Gamow-Teller excitations from the ground state of 14N

NUCLEAR REACTIONS 14N(d, 2p), E not given; calculated Gamow-Teller transition strengths to ground and excited states, role of two-particle spin-orbit and tensor forces.

NUCLEAR STRUCTURE 14C, 14N; calculated levels, J, π. Shell model, comparison with data.

doi: 10.1016/S0375-9474(03)00746-2
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2003CA28      Phys.Rev.Lett. 91, 102502 (2003)

D.M.Cardamone, C.A.Stafford, B.R.Barrett

How to Measure the Spreading Width for the Decay of Superdeformed Nuclei

NUCLEAR STRUCTURE 152Dy, 194Hg; analyzed data; deduced tunneling widths for decay out of superdeformed bands. Two-level model.

doi: 10.1103/PhysRevLett.91.102502
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2002BA15      Acta Phys.Pol. B33, 297 (2002)

B.R.Barrett, P.Navratil, W.E.Ormand, J.P.Vary

Ab initio Large-Basis No-Core Shell Model and Its Application to Light Nuclei

NUCLEAR STRUCTURE 3H, 3,4He; calculated ground-state energies. 6Li, 6He, 12C; calculated levels, J, π. No-core shell model, several potentials compared, comparisons with data.

2002BA65      Nucl.Phys. A704, 254c (2002)

B.R.Barrett, P.Navratil, J.P.Vary

Large-Basis No-Core Shell Model

NUCLEAR STRUCTURE 3H, 3,4He; calculated ground-state energies. 12C calculated levels, J, π, proton radii, quadrupole moments. No-core shell model approach.

doi: 10.1016/S0375-9474(02)00785-6
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2002DE48      Ann.Phys.(New York) 296, 287 (2002)

A.Deveikis, R.K.Kalinauskas, B.R.Barrett

Calculation of Coefficients of Fractional Parentage for Large-Basis Harmonic-Oscillator Shell Model

doi: 10.1006/aphy.2002.6229
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2002MA59      Phys.Rev. C66, 044007 (2002)

D.C.J.Marsden, P.Navratil, S.A.Coon, B.R.Barrett

Feasibility study of a three-nucleon force in the no-core shell model: 3H binding energy

NUCLEAR STRUCTURE 3H; calculated binding energy, excited states energies, dependence on cutoff parameter. Two-pion exchange three-body interaction.

doi: 10.1103/PhysRevC.66.044007
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2002NO05      Phys.Rev. C65, 054003 (2002)

A.Nogga, H.Kamada, W.Glockle, B.R.Barrett

The α Particle Based on Modern Nuclear Forces

NUCLEAR STRUCTURE 3H, 3He; calculated binding energies. 4He; calculated binding energy, wave functions, nucleon momentum distributions and correlations. Role of three- and four-nucleon forces discussed.

doi: 10.1103/PhysRevC.65.054003
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2001KA47      Phys.Rev. C64, 044001 (2001)

H.Kamada, A.Nogga, W.Glockle, E.Hiyama, M.Kamimura, K.Varga, Y.Suzuki, M.Viviani, A.Kievsky, S.Rosati, J.Carlson, S.C.Pieper, R.B.Wiringa, P.Navratil, B.R.Barrett, N.Barnea, W.Leidemann, G.Orlandini

Benchmark Test Calculation of a Four-Nucleon Bound State

NUCLEAR STRUCTURE A=4; calculated four-nucleon bound state energy, radius, related features. Several approaches compared.

doi: 10.1103/PhysRevC.64.044001
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2001KA55      Nucl.Phys. A695, 191 (2001)

G.P.Kamuntavicius, R.K.Kalinauskas, B.R.Barrett, S.Mickevicius, D.Germanas

The General Harmonic-Oscillator Brackets: Compact expression, symmetries, sums and Fortran code

doi: 10.1016/S0375-9474(01)01101-0
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2001NA33      Phys.Rev.Lett. 87, 172502 (2001)

P.Navratil, J.P.Vary, W.E.Ormand, B.R.Barrett

Six-Nucleon Spectroscopy from a Realistic Nonlocal Hamiltonian

NUCLEAR STRUCTURE 3H, 3,4,6He, 6Li; calculated ground-state energies. 6He, 6Li; calculated levels, J, π, B(E2), B(M1). 6He deduced soft dipole mode. No-core shell model, comparisons with data.

doi: 10.1103/PhysRevLett.87.172502
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2000DI01      Ann.Phys.(New York) 279, 81 (2000)

A.F.Diallo, B.R.Barrett, P.Navratil, C.Gorrichategui

The spdf IBA Analytical Description of Odd Parity States in the Actinide Region

NUCLEAR STRUCTURE 226,228,230,232Th, 232,234,236,238U, 238,240,242Pu; calculated levels, J, π. IBA with odd-l bosons in the condensate. Comparison with data.

doi: 10.1006/aphy.1999.5976
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2000NA06      Phys.Rev. C61, 044001 (2000)

P.Navratil, G.P.Kamuntavicius, B.R.Barrett

Few-Nucleon Systems in a Translationally Invariant Harmonic Oscillator Basis

NUCLEAR STRUCTURE 3H, 3,4He; calculated ground state, excited states energies, radii, charge form factors. Translationally invariant no-core shell model approach.

doi: 10.1103/PhysRevC.61.044001
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2000NA16      Phys.Rev.Lett. 84, 5728 (2000)

P.Navratil, J.P.Vary, B.R.Barrett

Properties of 12C in the Ab Initio Nuclear Shell Model

NUCLEAR STRUCTURE 12C; calculated levels, J, π, B(M1), B(E2), quadrupole moments, radii. No-core nuclear shell model. Comparisons with data.

doi: 10.1103/PhysRevLett.84.5728
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2000NA32      Phys.Rev. C62, 054311 (2000)

P.Navratil, J.P.Vary, B.R.Barrett

Large-Basis ab initio No-Core Shell Model and Its Application to 12C

NUCLEAR STRUCTURE 12C; calculated levels J, π, radii, binding energies, electromagnetic form factors, transitions B(E2), B(M1). Large basis no-core shell model.

doi: 10.1103/PhysRevC.62.054311
Citations: PlumX Metrics

1999BA12      Czech.J.Phys. 49, 1 (1999)


Effective Operators in Shell-Model Calculations

doi: 10.1023/A:1022864308259
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1999BA77      Phys.Rev. C60, 037302 (1999)

B.R.Barrett, S.Kuyucak, P.Navratil, P.Van Isacker

Is There a Proton-Neutron Interacting Boson Model Rule for M1 Properties ?

NUCLEAR STRUCTURE 168Er; calculated ground, vibrational bands level energies, transition matrix elements, g. Neutron-proton interacting boson model.

doi: 10.1103/PhysRevC.60.037302
Citations: PlumX Metrics

1999DA01      Phys.Rev. C59, 200 (1999)

E.D.Davis, B.R.Barrett, A.F.Diallo

Importance of the Hexadecapole-Hexadecapole Interaction

NUCLEAR STRUCTURE Z=62-68; analyzed moments of inertia, B(E2), B(E4) for deformed even-even nuclei; deduced hexadecapole-hexadecapole interaction role. sdgIBM model.

doi: 10.1103/PhysRevC.59.200
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1999KA49      Phys.Rev. C60, 044304 (1999)

G.P.Kamuntavicius, P.Navratil, B.R.Barrett, G.Sapragonaite, R.K.Kalinauskas

Isoscalar Hamiltonians for Light Atomic Nuclei

NUCLEAR STRUCTURE 3H, 3,6He, 6Li, 6Be; calculated level energies. Charge-independent Hamiltonian.

doi: 10.1103/PhysRevC.60.044304
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1999NA04      Phys.Rev. C59, 611 (1999); Comment Phys.Rev. C60, 069801 (1999)

P.Navratil, B.R.Barrett, W.Glockle

Spurious States in the Faddeev Formalism for Few-Body Systems

doi: 10.1103/PhysRevC.59.611
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1999NA13      Phys.Rev. C59, 1906 (1999)

P.Navratil, B.R.Barrett

Four-Nucleon Shell-Model Calculations in a Faddeev-Like Approach

NUCLEAR STRUCTURE 4He; calculated binding energies, radii, level energies, form factors. Fadeev equations, shell model, three-body effective interaction.

doi: 10.1103/PhysRevC.59.1906
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1999OR01      Nucl.Phys. A645, 107 (1999)

A.M.Oros, K.Heyde, C.De Coster, B.Decroix, R.Wyss, B.R.Barrett, P.Navratil

Shape Coexistence in the Light Po Isotopes

NUCLEAR STRUCTURE 192,194,196,198,200,202,204,206,208,210Po; calculated levels, J, π, potential energy surfaces; deduced shape coexistence effects. Particle-core model, two-state mixing.

doi: 10.1016/S0375-9474(98)00602-2
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1999ST28      Phys.Rev. C60, 051305 (1999)

C.A.Stafford, B.R.Barrett

Simple Model for Decay of Superdeformed Nuclei

NUCLEAR STRUCTURE 152Dy, 192,194Hg, 194Pb; calculated superdeformed bands decay-out widths. Two-level model, coherent and incoherent tunneling limits.

doi: 10.1103/PhysRevC.60.051305
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1998NA02      Phys.Rev. C57, 562 (1998)

P.Navratil, B.R.Barrett

Shell-Model Calculations for the Three-Nucleon System

doi: 10.1103/PhysRevC.57.562
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1998NA17      Phys.Rev. C57, 3119 (1998)

P.Navratil, B.R.Barrett

Large-Basis Shell-Model Calculations for p-Shell Nuclei

NUCLEAR STRUCTURE 7,8,9,10He, 7,8,9,10,11Li, 7,8,9,10,11Be, 7,8,9,10B, 9,10C; calculated levels, J, π, proton radii, μ, Q. Shell model. Comparison with data.

doi: 10.1103/PhysRevC.57.3119
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1998TH03      Phys.Rev. C57, 3108 (1998)

M.Thoresen, P.Navratil, B.R.Barrett

Comparison of Techniques for Computing Shell-Model Effective Operators

doi: 10.1103/PhysRevC.57.3108
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1998WE14      Phys.Rev.Lett. 81, 3603 (1998)

H.A.Weidenmuller, P.von Brentano, B.R.Barrett

Spreading Width for Decay Out of a Superdeformed Band

NUCLEAR STRUCTURE 192,194Hg, 194Pb; analyzed data; deduced spreading widths for decay out of superdeformed bands, independent attenuation factor.

doi: 10.1103/PhysRevLett.81.3603
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1997NA03      Phys.Rev. C55, R573 (1997)

P.Navratil, M.Thoresen, B.R.Barrett

Microscopic Origins of Effective Charges in the Shell Model

NUCLEAR STRUCTURE 6Li; calculated effective Hamiltonian, electric quadrupole, magnetic dipole operators. Microscopic interactions, large scale 6(h-bar x Omega) calculation.

doi: 10.1103/PhysRevC.55.R573
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1997NA17      Phys.Rev. C56, 2542 (1997)

P.Navratil, B.R.Barrett, W.E.Ormand

Large-Basis Shell-Model Calculation of the 10C → 10B Fermi Matrix Element

NUCLEAR STRUCTURE 10B; calculated levels, binding energy, magnetic, quadrupole moments. 10C; calculated binding energy, charge radius; deduced β-decay isospin mixing role. Large basis shell model calculations.

doi: 10.1103/PhysRevC.56.2542
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1996DA14      Phys.Rev. C53, 2849 (1996)

E.D.Davis, A.F.Diallo, B.R.Barrett

g Boson and Systematics of the M1 Scissors Mode

doi: 10.1103/PhysRevC.53.2849
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1996NA06      Phys.Lett. 369B, 193 (1996)

P.Navratil, B.R.Barrett

Soluble Model Test of the Multi-Valued G-Matrix Effective Interaction

doi: 10.1016/0370-2693(95)01564-7
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1996NA08      Phys.Rev. C53, 2794 (1996)

P.Navratil, B.R.Barrett, J.Dobes

M1 Properties of Tungsten Isotopes in the Interacting Boson Model-2

NUCLEAR STRUCTURE 182,184,186W; calculated levels, B(λ), δ, g. Interacting boson model-2.

doi: 10.1103/PhysRevC.53.2794
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1996NA24      Phys.Rev. C54, 2986 (1996)

P.Navratil, B.R.Barrett

No-Core Shell-Model Calculations with Starting-Energy-Independent Multivalued Effective Interactions

NUCLEAR STRUCTURE 3H; calculated binding energy, μ, proton rms radius. 4He; calculated binding energy, proton rms radius. 5He, 6Li; calculated binding energy, μ, proton rms radius, quadrupole moment, levels. 6He; calculated binding energy, nucleon rms radii. Large-space, no-core shell model.

doi: 10.1103/PhysRevC.54.2986
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1996TH02      Phys.Rev. C53, 1997 (1996)

M.Thoresen, D.C.Zheng, B.R.Barrett

Test of Shell-Model Interactions for Nuclear Structure Calculations

NUCLEAR STRUCTURE 6Li; calculated levels, binding energy. No-core shell model space.

doi: 10.1103/PhysRevC.53.1997
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1996ZH06      Phys.Rev. C53, 1447 (1996)

D.C.Zheng, J.P.Vary, B.R.Barrett

Reply to ' Comment on ' Large-Space Shell-Model Calculations for Light Nuclei ' '

NUCLEAR STRUCTURE 6Li, 5He; analyzed no-core, large space shell model results; deduced model validity.

doi: 10.1103/PhysRevC.53.1447
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1995HA47      Phys.Lett. 363B, 145 (1995)

P.Halse, P.Van Isacker, B.R.Barrett

Sum Rules of B(M1, 0+1 → 1+) Strength in IBM-3 and IBM-4

NUCLEAR STRUCTURE 20,22Ne, 24,26Mg; calculated summed B(M1). Isospin-invariant forms of the interacting boson model.

doi: 10.1016/0370-2693(95)01213-A
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1995ZH11      Phys.Rev. C51, 2471 (1995)

D.C.Zheng, B.R.Barrett, J.P.Vary, H.Muther

Auxiliary Potential in No-Core Shell-Model Calculations

NUCLEAR STRUCTURE 4He; calculated ground state energy. No-core shell model, Lee-Suzuki iteration method.

doi: 10.1103/PhysRevC.51.2471
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1995ZH32      Phys.Rev. C52, 2488 (1995)

D.C.Zheng, B.R.Barrett, J.P.Vary, W.C.Haxton, C.-L.Song

Large-Basis Shell Model Studies of Light Nuclei with a Multivalued G-Matrix Effective Interaction

NUCLEAR STRUCTURE 5,4He; calculated levels. 7,6Li; calculated levels, binding energy, μ, quadrupole moment, proton rms radii. Large basis shell model.

doi: 10.1103/PhysRevC.52.2488
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1994BA24      Nucl.Phys. A570, 23c (1994)

B.R.Barrett, D.C.Zheng, L.Jaqua, J.P.Vary, R.J.McCarthy

Realistic Microscopic Calculations for the Light Nuclei A = 2 to 7

NUCLEAR STRUCTURE 4,5He, 6,7Li; calculated levels. Realistic microscopic calculation.

doi: 10.1016/0375-9474(94)90266-6
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1994BA57      Phys.Rev. C50, 1917 (1994)

B.R.Barrett, E.D.Davis, A.F.Diallo

Can We Do Without the Majorana Term in the Effective Nuclear Interaction ( Question )

NUCLEAR STRUCTURE 148,150,152,154Sm; calculated B(λ), g-factors; deduced Majorana term strength features.

doi: 10.1103/PhysRevC.50.1917
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1994JA08      Nucl.Phys. A571, 242 (1994)

L.Jaqua, P.Halse, B.R.Barrett, J.P.Vary

Effective Shell-Model Interaction for No-Core Model Spaces

NUCLEAR STRUCTURE 4He; calculated binding energy vs intermediate state excitation energy; deduced model convergence features. Effective shell-model interaction, no-core model spaces.

doi: 10.1016/0375-9474(94)90059-0
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1994ZH07      Phys.Rev. C49, 1999 (1994)

D.C.Zheng, B.R.Barrett, J.P.Vary, R.J.McCarthy

Simple Approximation for the Starting-Energy-Independent Two-Body Effective Interaction with Applications to 6Li

NUCLEAR STRUCTURE 6Li; calculated levels. Exact, approximate effective interactions, Lee-Suzuki iteration method.

doi: 10.1103/PhysRevC.49.1999
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1994ZH10      Phys.Rev. C49, 3342 (1994)

D.C.Zheng, B.R.Barrett

Nuclear Shell-Model Calculations for 6Li and 14N with Different NN Potentials

NUCLEAR STRUCTURE 6Li, 14N; calculated levels, μ, B(λ), quadrupole moment. Different NN-interactions.

doi: 10.1103/PhysRevC.49.3342
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1994ZH23      Phys.Rev. C50, 2841 (1994)

D.C.Zheng, J.P.Vary, B.R.Barrett

Large-Space Shell-Model Calculations for Light Nuclei

NUCLEAR STRUCTURE 2H, 6Li, 5He; calculated levels, binding energy, μ, quadrupole moment, proton rms radius. 3H, 4He; calculated levels, binding energy.

doi: 10.1103/PhysRevC.50.2841
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1993BA36      Nucl.Phys. A557, 551c (1993)

A.F.Barfield, B.R.Barrett

High-Spin States and Superdeformation in the Proton-Neutron Interacting Boson Model

NUCLEAR STRUCTURE 192Hg, 232U; calculated levels, moment of inertia for bands. 192Hg deduced possible new superdeformed band candidate. Neutron-proton interacting boson model.

doi: 10.1016/0375-9474(93)90568-I
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1993DI07      Ann.Phys.(New York) 222, 159 (1993)

A.F.Diallo, E.D.Davis, B.R.Barrett

An Improved Asymptotic Realisation of the Projected Intrinsic State Approximation in IBM

doi: 10.1006/aphy.1993.1020
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1993JA11      Phys.Rev. C48, 1765 (1993)

L.Jaqua, D.C.Zheng, B.R.Barrett, J.P.Vary

Effects of the Single-Particle Potential Insertions in the Effective Interaction

NUCLEAR STRUCTURE 4He, 6Li; calculated levels. Different ways of single particle potential insertions in effective interaction.

doi: 10.1103/PhysRevC.48.1765
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1993ZH15      Phys.Rev. C48, 1083 (1993)

D.C.Zheng, B.R.Barrett, L.Jaqua, J.P.Vary, R.J.McCarthy

Microscopic Calculations of the Spectra of Light Nuclei

NUCLEAR STRUCTURE 4,5He, 6,7Li; calculated ground state energies, levels. Large shell model space, realistic interactions, G-matricies.

doi: 10.1103/PhysRevC.48.1083
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1992BA15      Phys.Rev. C45, R1417 (1992)

B.R.Barrett, R.F.Casten, J.N.Ginocchio, T.Seligman, H.A.Weidenmuller

Is there Incomplete Mixing of States with Different K Quantum Numbers in the Neutron Resonance Region ( Question )

NUCLEAR STRUCTURE 168Er, 178Hf; analyzed primary transitions Iγ; deduced incomplete K-mixing evidence.

doi: 10.1103/PhysRevC.45.R1417
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1992BA52      Phys.Rev. C46, 1735 (1992)

B.R.Barrett, T.Otsuka

E0 Decays of β Vibrations in the O(6) Limit of the Neutron-Proton Interacting Boson Model

NUCLEAR STRUCTURE 110,112,114,116,118,120,122,124,126,128,130,132,134Ba; calculated E0 transition strength, isotope, isomer shifts. Ground state, vibrational bandhead states, neutron-proton interacting boson model, O(6) limit.

doi: 10.1103/PhysRevC.46.1735
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1992BA59      Phys.Lett. 295B, 5 (1992)

B.R.Barrett, E.D.Davis, A.F.Diallo

g-Boson Panacea for Magnetic Properties of the Nuclear Groundstate Band ( Questiion )

NUCLEAR STRUCTURE 198,196,194,192Pt, 188,190,192Os; analyzed ground state band g-factor data; deduced g-boson degree of freedom does not resolve discrepancies. Other nuclei included, sdg-version of the interacting boson model, variation-after-angular momentum projection Hartree-Bose approximation.

doi: 10.1016/0370-2693(92)90079-J
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1992JA13      Phys.Rev. C46, 2333 (1992)

L.Jaqua, M.A.Hasan, J.P.Vary, B.R.Barrett

Kinetic-Energy Operator in the Effective Shell-Model Interaction

NUCLEAR STRUCTURE 16,17O; calculated single-particle energies; deduced center-of-mass kinetic energy role in relating these to observed removal energies. Effective shell model interactions.

doi: 10.1103/PhysRevC.46.2333
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1991BA04      Phys.Rev. C43, R926 (1991)

B.R.Barrett, G.D.Dracoulis, R.A.Bark

Intruder Bands as F-Spin Analog States

NUCLEAR STRUCTURE A=168-182; analyzed band structure; deduced intruder band, F-spin analog relationship. 172,174Os, 180,182Hg, 176,178Pb; calculated uncoupled band moments of inertia, quadrupole moments. F-spin, interacting boson model.

doi: 10.1103/PhysRevC.43.R926
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1991BA34      Phys.Rev. C44, 1454 (1991)

A.F.Barfield, B.R.Barrett

Multiparticle-Multihole Configuration Mixing within the Neutron-Proton Interacting Boson Model

NUCLEAR STRUCTURE 192Hg; calculated levels. Neutron-proton interacting boson model, multiparticle-multihole configuration mixing.

doi: 10.1103/PhysRevC.44.1454
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1991KU17      Phys.Lett. 263B, 347 (1991)

S.Kuyucak, V.-S.Lac, I.Morrison, B.R.Barrett

γ-Unstable Nuclei in the sdg Boson Model

NUCLEAR STRUCTURE 194,196,198Pt; calculated levels, E4 matrix elements. 126Xe; calculated levels. sdg boson model, O(6) limit.

doi: 10.1016/0370-2693(91)90471-2
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1989HA23      Ann.Phys.(New York) 192, 204 (1989)

P.Halse, B.R.Barrett

β-Decay and the Structure of Light Nuclei

NUCLEAR STRUCTURE A=20-36; calculated β-decay Gamow-Teller transition strengths; deduced T=0 state structure. Interacting boson model, SU(4) limit.

doi: 10.1016/0003-4916(89)90125-5
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1989SC11      Phys.Rev. C39, 2419 (1989)

H.A.Schmitt, P.Halse, A.B.Balantekin, B.R.Barrett

Noncompact Orthosymplectic Supersymmetry in 61Ni and 62Ni

NUCLEAR STRUCTURE 61,62Ni; calculated levels, B(λ); deduced supersymmetry classification scheme. Geometrical model, noncompact orthosymplectic supersymmetry.

doi: 10.1103/PhysRevC.39.2419
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1988BA17      Ann.Phys.(New York) 182, 344 (1988)

A.F.Barfield, B.R.Barrett, J.L.Wood, O.Scholten

An Interacting Boson Model Description of Octupole States in Nuclei

NUCLEAR STRUCTURE 154Sm, 156,158Gd, 158,162Dy, 168Er, 172Yb, 178Hf, 182W; calculated levels, B(λ). Interacting boson model.

doi: 10.1016/0003-4916(88)90016-4
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1988BA47      Phys.Rev. C38, 1392 (1988)

A.B.Balantekin, B.R.Barrett, P.Halse

β Vibrations in the O(6) Limit of the Proton-Neutron Interacting Boson Model

NUCLEAR STRUCTURE 196Pt, 134Ba; calculated (β)-vibrational state energy. Proton-neutron interacting boson model, O(6) limit.

doi: 10.1103/PhysRevC.38.1392
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1988SC06      J.Phys.(London) G14, 657 (1988)

H.A.Schmitt, A.B.Balantekin, B.R.Barrett

Comment on ' Application of Spinor Symmetry to 131,133Xe and 135Ba '

NUCLEAR STRUCTURE 131Xe; calculated B(λ). Spinor symmetry validity discussion.

doi: 10.1088/0305-4616/14/5/020
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1987BA17      Phys.Rev. C35, 1878 (1987)

A.B.Balantekin, B.R.Barrett

Collective 2+ States in the U(5) Classical Limit of the Proton-Neutron Interacting Boson Model

NUCLEAR STRUCTURE 140Ba; calculated symmetric, antisymmetric 2+ state energies. Interacting boson model.

doi: 10.1103/PhysRevC.35.1878
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1987DR10      Ann.Phys.(New York) 176, 114 (1987)

C.H.Druce, S.Pittel, B.R.Barrett, P.D.Duval

The Interacting Boson Model: Microscopic calculations for the Mercury isotopes

NUCLEAR STRUCTURE 194,196,198,200,202Hg; calculated energy levels, B(E2), branching ratios, quadrupole moments. Microscopic interacting boson model.

doi: 10.1016/0003-4916(87)90179-5
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1987SE03      Phys.Rev. C35, 844 (1987)

P.B.Semmes, A.F.Barfield, B.R.Barrett, J.L.Wood

Testing Interacting Boson Model Cores through Particle-Core Coupling: Negative parity states in the odd-mass Tl and Au isotopes

NUCLEAR STRUCTURE 189,191,193,195Au, 191,193,195,197Tl; calculated levels. Interacting boson model.

doi: 10.1103/PhysRevC.35.844
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1986BA56      Phys.Rev. C34, 2001 (1986)

A.F.Barfield, J.L.Wood, B.R.Barrett

Interacting Boson Model Calculation of Octupole States in Deformed Nuclei

NUCLEAR STRUCTURE 154Sm, 158Gd, 168Er, 172Yb, 178Hf; calculated levels, octupole bandhead energies, B(E3). Interacting boson model calculations.

doi: 10.1103/PhysRevC.34.2001
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1986BA67      Radiat.Eff. 95, 149 (1986)

B.R.Barrett, I.Morrison, J.G.Zabolitzky

How Well are the IBM-2 Parameters Determined by the Experimental Data ( Question )

NUCLEAR STRUCTURE 196Pt; calculated levels; deduced model parameters. Interacting boson model.

doi: 10.1080/00337578608208683
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1986DA03      Nucl.Phys. A449, 256 (1986)

H.J.Daley, B.R.Barrett

An Interacting Boson Model of Clustering in Nuclei: α-like clustering in the heavy actinides

NUCLEAR STRUCTURE 222,224,226,228,230,232,234,236,238U, 220,222,224,226,228,230,232,234,236Th, 218,220,222,224,226,228,230,232,234Ra; calculated levels, B(E2); deduced model parameters. Interacting boson model, α-clustering.

doi: 10.1016/0375-9474(86)90006-0
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1985BA25      Phys.Lett. 155B, 133 (1985)

B.R.Barrett, P.Halse

M1 Transition Strength in the SU(3) Limit of the Generalized IBM-2

NUCLEAR STRUCTURE 156Gd; analyzed B(M1) interpretation. Interacting boson model, generalized SU(3) limit, arbitrarily large boson number.

doi: 10.1016/0370-2693(85)90972-4
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1985BA31      Phys.Rev. C32, 288 (1985)

A.B.Balantekin, B.R.Barrett

Collective M1 States in the Classical Limit of the Neutron-Proton Interacting Boson Model

NUCLEAR STRUCTURE 152,154,156Gd; calculated n-p antisymmetric M1 state vs Majorana term parameter. Interacting boson model.

doi: 10.1103/PhysRevC.32.288
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1985DR05      Phys.Lett. 157B, 115 (1985)

C.H.Druce, S.Pittel, B.R.Barrett, P.D.Duval

Microscopic Calculation of the Majorana Parameters of the Interacting Boson Model for the Hg Isotopes

NUCLEAR STRUCTURE 194,196,198,200,202Hg; calculated levels, Majorana parameters. Neutron-proton interacting boson model.

doi: 10.1016/0370-2693(85)91528-X
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1984BA69      Phys.Lett. 149B, 277 (1984)

A.F.Barfield, B.R.Barrett

The Interacting Boson Model and the Structure of 182Hg

NUCLEAR STRUCTURE 182Hg; calculated levels. Interacting boson model.

doi: 10.1016/0370-2693(84)90405-2
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1983BA21      Z.Phys. A311, 205 (1983)

A.F.Barfield, B.R.Barrett, K.A.Sage, P.D.Duval

The Interacting Boson Model Applied to the Mercury Isotopes

NUCLEAR STRUCTURE 182,184,186,188,190,192,194,196,198,200,202Hg; calculated levels, B(E2), E0 transition rates, isotope shifts, quadrupole moments, B(E2) ratios, B(E0)/B(E2). Interacting boson model.

doi: 10.1007/BF01415106
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1983BA47      Phys.Lett. 129B, 153 (1983)

A.B.Balantekin, B.R.Barrett, S.Levit

Potential Energy Surfaces in the Classical Limit of the IBM-2

NUCLEAR STRUCTURE 168,170,172,174,176,178,180,182,184,186,188,190,192,194W; calculated neutron proton potential energy distribution; deduced stable minimum deformation parameters.

doi: 10.1016/0370-2693(83)90832-8
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1983DU08      Phys.Lett. 129B, 289 (1983)

P.D.Duval, S.Pittel, B.R.Barrett, C.H.Druce

g-Boson Renormalization Effects in the Interacting Boson Model for Nondegenerate Orbits

NUCLEAR STRUCTURE 204,202,200,198,196,194,192,190,188,186,184Hg; calculated single boson energy splittings, quadrupole boson parameters. Interacting boson model, nondegenerate orbits, g-boson renormalization.

doi: 10.1016/0370-2693(83)90667-6
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