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NSR database version of May 24, 2024.

Search: Author = D.R.Bes

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2021MA81      Phys.Rev. C 104, L061304 (2021)

A.O.Macchiavelli, O.Civitarese, S.M.Lenzi, R.J.Liotta, D.R.Bes

"Piston" mechanism in a time-dependent two-level model

NUCLEAR STRUCTURE 19N; analyzed one-proton knockout reaction on 19N. populating unbound state in 18C, in the framework of a time-dependent two-level model. 18C; calculated wave functions of g.s. and the first two 2+ states; quantified validity of the so-called 'piston' mechanism (proposed by 2018Re06: Phys. Rev. Lett. 120, 152504) in terms of time scales involved in the process, reaction time, period of oscillation between the mixed states, and the lifetime of the excited unbound state in 18C.

doi: 10.1103/PhysRevC.104.L061304
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2019BE10      Nucl.Phys. A983, 53 (2019)

D.R.Bes, O.Civitarese

The contribution of the pairing field to the transfer of two nucleons

NUCLEAR STRUCTURE A=110-124; calculated two-nucleon pairing transfer amplitude vs distance of the centers, moment of inertia for pairing rotational motion using radial-dependent BCS approach; deduced its mass dependence.

doi: 10.1016/j.nuclphysa.2018.12.026
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2016BE33      Phys.Scr. 91, 063010 (2016)

D.R.Bes

The field treatment of the nuclear spectrum. Historical foundation and two contributions to its ensuing development

doi: 10.1088/0031-8949/91/6/063010
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2012BE25      Phys.Rev. C 86, 024314 (2012)

D.R.Bes, O.Civitarese, J.Suhonen

Schematic and realistic model calculations of the isovector spin monopole excitations in 116In

NUCLEAR REACTIONS 116Cd(p, n)116In, 116Sn(n, p)116In, E not given; calculated Gamow-Teller (GT) and isovector spin monopole (IVSM) strength distributions of 1+ excitations; deduced mixing between GT and IVSM modes, and contribution to 2νββ decay of 116Cd at and beyond the Gamow-Teller giant resonance (GTGR) region of energies.

doi: 10.1103/PhysRevC.86.024314
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2010BE02      Phys.Rev. C 81, 014315 (2010)

D.R.Bes, O.Civitarese

Matrix elements for the ground-state to ground-state 2νβ-β- decay of Te isotopes in a hybrid model

RADIOACTIVITY 128,130Te(2β-); calculated matrix elements for ground state to ground state two-neutrino double-β decay within a formalism that describes interactions between neutrons in a superfluid phase and protons in a normal phase. Comparison with experimental data.

doi: 10.1103/PhysRevC.81.014315
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2008BE23      Phys.Rev. C 78, 014317 (2008)

D.R.Bes, O.Civitarese

Isospin-spin excitations in the A = 58 mass region: The 58Ni(3He, t)58Cu reaction

NUCLEAR REACTIONS 58Ni(3He, t), E not given; calculated GT matrix elements.A=52-59; analyzed levels, J, π, configurations. Perturbation theory.

doi: 10.1103/PhysRevC.78.014317
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2004BE03      Nucl.Phys. A732, 49 (2004)

D.R.Bes, O.Civitarese

Isospin-symmetry violation. Collective treatment of the I.A.S.

NUCLEAR STRUCTURE 208Pb, 208Bi; calculated analog states energies, Fermi transition intensities, isospin symmetry violation effects.

doi: 10.1016/j.nuclphysa.2003.12.008
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2004BE33      Nucl.Phys. A741, 60 (2004)

D.R.Bes, O.Civitarese

The coupling between the IAS and the IMS

doi: 10.1016/j.nuclphysa.2004.06.019
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2003BE20      Yad.Fiz. 66, 466 (2003); Phys.Atomic Nuclei 66, 438 (2003)

D.R.Bes, O.Civitarese

Symmetry Violations in Nuclear Hamiltonians and Their Consequences for Electroweak Decays

doi: 10.1134/1.1563701
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2002BE38      Nucl.Phys. A705, 297 (2002)

D.R.Bes, O.Civitarese

Collective Motion in Iso- and Gauge-Spaces Application to 2νββ-Decay Transitions

RADIOACTIVITY 76Ge(2β-); calculated 2ν-accompanied 2β-decay Gamow-Teller transition matrix elements.

doi: 10.1016/S0375-9474(02)00655-3
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2002BE43      Czech.J.Phys. 52, 481 (2002)

D.R.Bes, O.Civitarese

The Calculation of 2νββ Matrix Elements within the Collective Description

doi: 10.1023/A:1015301125199
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2002BE44      Czech.J.Phys. 52, 495 (2002)

D.R.Bes, O.Civitarese

Spurious Center of Mass Effects in Electroweak Decays

doi: 10.1023/A:1015353109269
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2001BE14      Phys.Rev. C63, 044323 (2001)

D.R.Bes, O.Civitarese

Removal of Spurious Center of Mass Effects in Nuclear Many-Body Systems

doi: 10.1103/PhysRevC.63.044323
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2000BE02      Phys.Rev. C61, 024315 (2000)

D.R.Bes, O.Civitarese, E.E.Maqueda, N.N.Scoccola

Structure of the Vacuum States in the Presence of Isovector and Isoscalar Pairing Correlations

doi: 10.1103/PhysRevC.61.024315
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1999BE03      Phys.Lett. 446B, 93 (1999)

D.R.Bes, O.Civitarese, N.N.Scoccola

Collective Description of Nuclear Double Beta Decay Transitions

doi: 10.1016/S0370-2693(98)01520-2
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1994BE06      Nucl.Phys. A570, 31c (1994)

D.R.Bes, R.De Luca

The Application of the BRST Supersymmetry to Nuclear Problems Involving Collective Coordinates

NUCLEAR STRUCTURE 235U; calculated Coriolis coupling strength percentage reduction. Application of BRST supersymmetry.

doi: 10.1016/0375-9474(94)90267-4
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1994GA19      Nucl.Phys. A573, 448 (1994)

J.P.Garrahan, D.R.Bes

A Systematic Treatment of Triaxial Systems at High Spins. II

doi: 10.1016/0375-9474(94)90352-2
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1994GA34      Phys.Lett. 331B, 251 (1994)

J.P.Garrahan, D.R.Bes

BRST Treatment of the Bohr Collective Hamiltonian at High Spins

doi: 10.1016/0370-2693(94)91046-4
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1989BE40      Phys.Lett. 232B, 163 (1989)

M.Bernath, D.R.Bes, O.Dragun, J.E.Testoni, H.Massmann

Neutron-Pair Transfer Formalism Including Deformation in Gauge Space for Target and Projectile

NUCLEAR REACTIONS 138Ba(14C, 14C), (14C, X), E=64 MeV; calculated σ(θ) for elastic, two-nucleon transfer; deduced model parameters. Macroscopic description, gauge space deformation.

doi: 10.1016/0370-2693(89)91679-1
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1986BA13      Nucl.Phys. A452, 513 (1986)

B.F.Bayman, D.R.Bes, P.Curutchet, O.Dragun, N.N.Scoccola, J.E.Testoni

Electromagnetic Decay of the Giant Quadrupole Resonances (I). Reaction Mechanism and Angular Distributions of the Emitted Photons

NUCLEAR REACTIONS 208Pb(17O, 17O'), E=380 MeV; analyzed data; deduced optical model parameters. 208Pb deduced GQR decay characteristics.

doi: 10.1016/0375-9474(86)90212-5
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1986BE03      Nucl.Phys. A449, 459 (1986)

D.R.Bes, M.T.Mehr, R.J.Liotta

Quantum-Mechanical Calculation of the Nuclear Moments of Inertia

NUCLEAR STRUCTURE 24Mg; calculated levels, moments of inertia. Deformed system, perturbative method.

doi: 10.1016/0375-9474(86)90231-9
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1986BE05      Nucl.Phys. A452, 531 (1986)

D.R.Bes, P.Curutchet, S.L.Reich, N.N.Scoccola, H.M.Sofia

Electromagnetic Decay of the Giant Quadrupole Resonances (II). Nuclear Structure Aspects

NUCLEAR STRUCTURE 208Pb; calculated giant resonance decay characteristics, B(λ), Γγ. Nuclear field theory approach.

doi: 10.1016/0375-9474(86)90213-7
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1986BE08      Phys.Lett. 169B, 5 (1986)

D.R.Bes, P.Lotti, E.Maglione, A.Vitturi

On the Radial Dependence of the Pair Transition Density in Superfluid Nuclei

NUCLEAR STRUCTURE 116,126Sn; calculated pair transition density radial dependence. Superfluid nuclei.

doi: 10.1016/0370-2693(86)90674-X
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1986BE32      J.Phys.(London) G12, 1205 (1986)

M.Bernath, D.R.Bes, M.Saraceno, M.E.Spina

A Two-Dimensional Soluble Model for the Excitation of Rotational States in Deformed Nuclei

NUCLEAR REACTIONS 146Nd(12C, 12C'), E=70.4 MeV; calculated σ(φ) vs transferred angular momentum. Two-dimensional soluble model.

doi: 10.1088/0305-4616/12/11/010
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1984BE16      Phys.Lett. 137B, 141 (1984)

D.R.Bes, R.A.Broglia

Rotational Isovector K(π) = 1+ Mode in Deformed Nuclei

NUCLEAR STRUCTURE 156Gd; calculated rotational isovector K(π)=1+ mode energy, B(M1). RPA, collective model.

doi: 10.1016/0370-2693(84)90217-X
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1983BE31      Nucl.Phys. A405, 313 (1983)

D.R.Bes, O.Dragun, E.E.Maqueda

The (14C, 14O) Reaction Considered as Simultaneous Pair-Exchange or Double-Charge-Exchange Processes

NUCLEAR REACTIONS 208Po(14C, 14O), E=250 MeV; 40Ca(14C, 14O), E=51 MeV; calculated σ(θ), σ vs transferred angular momentum; deduced S=0, 1 channel interference. DWBA formalism, simultaneous pair-, double-charge-exchange processes.

doi: 10.1016/0375-9474(83)90575-4
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1983BE53      Phys.Scr. 28, 527 (1983)

D.R.Bes, R.A.Broglia, E.Maglione, A.Vitturi

Self-Consistent Treatment of the Pairing Plus Quadrupole Force in the Nilsson plus BCS Model and in the Interacting Boson Model

NUCLEAR STRUCTURE A ≈ 150; calculated two-nucleon transfer amplitudes, static quadrupole moment vs shell filling parameter. Pairing plus quadrupole, variational calculations.

doi: 10.1088/0031-8949/28/5/004
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1983MA55      Nucl.Phys. A407, 98 (1983)

M.A.J.Mariscotti, D.R.Bes, S.L.Reich, H.M.Sofia, P.Hungerford, S.A.Kerr, K.Schreckenbach, D.D.Warner, W.F.Davidson, W.Gelletly

Search for Two-Octupole-Phonon States in 208Pb

NUCLEAR REACTIONS 207Pb(n, γ), E=thermal; measured Eγ, Iγ, γγ-coin, I(ce). 208Pb deduced levels, tentative J, π, two-phonon octupole vibration evidence, B(λ) ratios, γ-branching. RPA formalism.

doi: 10.1016/0375-9474(83)90310-X
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1981BE47      Phys.Lett. 106B, 1 (1981)

D.R.Bes, O.Dragun, E.E.Maqueda, R.J.Liotta

Pair Exchange Reactions

NUCLEAR REACTIONS 208Po(14C, 14O), E=250 MeV; calculated σ(θ). DWBA, pair exchange.

doi: 10.1016/0370-2693(81)91067-4
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1978PE16      Nucl.Phys. A311, 219 (1978)

R.P.J.Perazzo, S.L.Reich, D.R.Bes

Collective Treatment of the Pairing Hamiltonian (V). Analysis of Transfer Data for 88 ≤ A ≤ 96

NUCLEAR STRUCTURE Zr, Mo, Ru; calculated energies, two-particle transfer data on 0+ states using simplified rotation-vibration picture, yrast treatment. Compared with diagonalization of charge-independent pairing Hamiltonian.

doi: 10.1016/0375-9474(78)90511-0
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1977CI02      Phys.Lett. 72B, 45 (1977)

O.Civitarese, R.A.Broglia, D.R.Bes

Role of the Pauli Principle in the Spectrum of 211Pb

NUCLEAR STRUCTURE 211Pb; calculated levels, S associated with t, d reaction.

doi: 10.1016/0370-2693(77)90059-4
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1976BO26      Phys.Lett. 64B, 24 (1976)

P.F.Bortignon, R.A.Broglia, D.R.Bes, R.Liotta, V.Paar

On the Role of the Pairing Modes in the (h9/2 Coupled with 3-) Multiplet of 209Bi

NUCLEAR STRUCTURE 209Bi levels calculated S.

doi: 10.1016/0370-2693(76)90347-6
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1976DR02      Nucl.Phys. A258, 10 (1976)

O.Dragun, D.R.Bes, E.E.Maqueda

Two-Nucleon Stripping Reactions Populating Isobaric Multiplets in the Region 40 ≤ A ≤ 56

NUCLEAR STRUCTURE 42,44,46Ti, 42,44,46Sc, 42,44,46Ca, 48Cr, 48V, 48Ti, 50Sc, 50Ca, 50,52V, 50,52Ti, 52Fe, 52Mn, 52Cr, 54Mn, 54Cr, 56Ni, 56,58Co, 56,58Fe; calculated two nucleon stripping ratios populating isobaric multiplets. DWBA calculations.

doi: 10.1016/0375-9474(76)90522-4
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1974BR20      Phys.Lett. 50B, 213 (1974)

R.A.Broglia, D.R.Bes, B.S.Nilsson

Strength of the Multipole Pairing Coupling Constant

NUCLEAR REACTIONS 208Pb(t, p), (p, t); calculated σ; 206Pb(d, p), 207,210Pb(p, d); calculated S.

doi: 10.1016/0370-2693(74)90541-3
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1974CE02      Nucl.Phys. A228, 216 (1974)

A.E.Ceballos, H.J.Erramuspe, A.M.J.Ferrero, M.J.Sametband, J.E.Testoni, D.R.Bes, E.E.Maqueda, R.P.J.Perazzo, S.L.Reich

The (d, 6Li) Reaction in the f-p Shell at E = 27.25 MeV

NUCLEAR REACTIONS 56Fe(d, 6Li), 58Ni(d, 6Li), E=27.25 MeV; measured σ(θ). 52Cr, 54Fe levels deduced relative S. Enriched targets.

doi: 10.1016/0375-9474(74)90428-X
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1974RE10      Nucl.Phys. A233, 105 (1974)

S.Reich, H.M.Sofia, D.R.Bes

Properties of Single-Particle States in the 208Pb Region

NUCLEAR STRUCTURE 208Pb; calculated single particle states.

doi: 10.1016/0375-9474(74)90244-9
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1973BE06      Nucl.Phys. A199, 193 (1973)

D.R.Bes, E.E.Maqueda, R.P.J.Perazzo

Shell-Model Analysis of Pairing Excitations in the Region 52 < A < 60

doi: 10.1016/0375-9474(73)90343-6
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1973CE02      Nucl.Phys. A208, 617 (1973)

A.E.Ceballos, H.J.Erramuspe, A.M.J.Ferrero, M.J.Sametband, J.E.Testoni, D.R.Bes, E.E.Maqueda

The (d, 6Li) Reaction on 64,66,68Zn Isotopes at 27.25 MeV

NUCLEAR REACTIONS 64,66,68Zn(d, 6Li), E=27.25 MeV; measured σ(θ). 60,62,64Ni levels deduced relative S. Enriched targets.

doi: 10.1016/0375-9474(73)90678-7
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1972BE35      Phys.Lett. 40B, 338 (1972)

D.R.Bes, R.A.Broglia, B.Nilsson

Importance of the Quadrupole Pairing Field in the Jπ = 0+ Vibrations Of Shape Deformed Nuclei

NUCLEAR STRUCTURE 234U; calculated levels, 0+ pairing vibrations. Monopole, quadrupole pairing residual interactions.

doi: 10.1016/0370-2693(72)90814-3
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1972BE86      Phys.Scr. 6, 239 (1972)

D.R.Bes, G.G.Dussel, E.Maqueda, R.P.J.Perazzo

Application of the Yrast Concept to the Pairing Degree of Freedom

NUCLEAR REACTIONS 48Ca, 50Ti, 52Cr, 54Fe(3He, p); 60,62,64Ni, 64,66,68,70Zn(p, t); 64,66,68Zn, 56,58Fe(t, p); calculated σ.

doi: 10.1088/0031-8949/6/5-6/005
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1972CA19      Phys.Lett. 40B, 333 (1972)

R.F.Casten, E.R.Flynn, J.D.Garrett, O.Hansen, T.J.Mulligan, D.R.Bes, R.A.Broglia, B.Nilsson

Search for (t, p) Transitions to Excited 0+ States in the Actinide Region

NUCLEAR REACTIONS 230,232Th, 234,236,238U(t, p), E=15-20 MeV; measured σ(E;Ep, θ). 238U(p, t), E=20 MeV; measured σ(Et, θ). 232Th, 234Th, 234,236,238U deduced no 0+ excited state strength.

doi: 10.1016/0370-2693(72)90813-1
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1972DU04      Nucl.Phys. A183, 298 (1972)

G.G.Dussel, R.P.J.Perazzo, D.R.Bes

Collective Treatment of the Pairing Hamiltonian (III). Numerical Solutions for the T = 1 Case

doi: 10.1016/0375-9474(72)90661-6
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1971BE27      Phys.Rev. C3, 2349 (1971)

D.R.Bes, R.A.Broglia

Effect of the Multipole Pairing and Particle-Hole Fields in the Particle-Vibration Coupling of 209Pb. I

NUCLEAR STRUCTURE 209Pb; calculated levels, B(EL). Particle-vibration- coupling formalism.

doi: 10.1103/PhysRevC.3.2349
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1971BE28      Phys.Rev. C3, 2389 (1971)

D.R.Bes, R.A.Broglia

Effective Operators and the Analysis of Single-Nucleon Transfer Reactions on Closed-Shell Nuclei

NUCLEAR STRUCTURE 207,209Pb; calculated levels, S for 208Pb(p, d), (d, p). Particle-vibration-coupling model.

doi: 10.1103/PhysRevC.3.2389
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1971BR48      Phys.Lett. 37B, 257 (1971)

R.A.Broglia, V.Paar, D.R.Bes

Effective Interaction between the Jπ = 2+ Two-Phonons States in 208Pb. Evidence for the Existence of the Isovector Quadrupole Mode

NUCLEAR STRUCTURE 208Pb levels deduced effective interaction, existence of isovector quadrupole mode.

doi: 10.1016/0370-2693(71)90012-8
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1971BR49      Phys.Lett. 37B, 159 (1971)

R.A.Broglia, V.Paar, D.R.Bes

Diagrammatic Perturbation Treatment of the Effective Interaction between Two-Phonon States in Closed Shell Nuclei: the Jπ = 0+ States in 208Pb

NUCLEAR STRUCTURE 208Pb; calculated levels, coupling constants, B(EL).

doi: 10.1016/0370-2693(71)90040-2
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1971BR51      Phys.Lett. 36B, 541 (1971)

R.A.Broglia, S.Landowne, V.Paar, B.Nilsson, D.R.Bes, E.E.Flynn

Coupling between Inelastic and Pair Transfer Degrees of Freedom. The 208Pb(t, p)210Pb(3-) Reaction Analyzed in the Coupled Channel Born Approximation

NUCLEAR REACTIONS 208Pb(t, p), E not given; calculated σ(θ). Coupled-channel Born approximation.

doi: 10.1016/0370-2693(71)90084-0
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1970TA15      Phys.Rev.Lett. 25, 1507 (1970)

T.Tamura, D.R.Bes, R.A.Broglia, S.Landowne

Coupled-Channel Born-Approximation Calculation of Two-Nucleon Transfer Reactions in Deformed Nuclei

NUCLEAR REACTIONS 176Yb(p, t), E not given; measured nothing; analyzed σ(θ). Coupled-channel Born approximation.

doi: 10.1103/PhysRevLett.25.1507
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1969BE35      Nucl.Phys. A135, 1 (1969)

D.R.Bes, G.G.Dussel

Phenomenological Treatment of Anharmonic Effects in Cd Isotopes

NUCLEAR STRUCTURE 109,110,111,112,113,114,115,116Cd; calculated levels, S, B(E2). Anharmonic effects.

doi: 10.1016/0375-9474(69)90143-2
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1969BE36      Nucl.Phys. A135, 25 (1969)

D.R.Bes, G.G.Dussel

Microscopic Treatment of Anharmonic Effects in Cd Isotopes

NUCLEAR STRUCTURE 110,112,114,116Cd; calculated levels, quadrupole moment. Anharmonic parameters.

doi: 10.1016/0375-9474(69)90144-4
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1968BE08      Phys.Rev. 166, 1045 (1968)

D.R.Bes, S.Landowne, M.A.J.Mariscotti

Deviations from the I(I+1) Law in Deformed Nuclei

doi: 10.1103/PhysRev.166.1045
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1966BE32      Nucl.Phys. 86, 581 (1966)

D.R.Bes, Y.-C.Cho

The γ-Vibrations in Odd-Mass Rare-Earth Nuclei

doi: 10.1016/0029-5582(66)90499-8
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1965BE40      Nucl.Phys. 65, 1 (1965)

D.R.Bes, P.Federman, E.Maqueda, A.Zuker

Properties of the γ-Vibrational State

NUCLEAR STRUCTURE 150Nd, 152,154Sm, 154,156,158,160Gd, 156,158,160,162,164Dy, 162,164,166,168,170Er, 170,172,174,176Yb, 176,178,180Hf, 182,184,186W, 186Os, 228,230,232,234Th, 230,232,234,236,238U, 238,240,242Pu, 242,244,246,248Cm, 248,250,252,254Cf, 250,252,254,256Fm; calculated B(E2).

doi: 10.1016/0029-5582(65)90290-7
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1958BE01      Nucl.Phys. 6, 645 (1958)

D.R.Bes

Levels in Dy161 II. Theoretical

NUCLEAR STRUCTURE 161Dy; calculated levels.

doi: 10.1016/0029-5582(58)90218-9
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1955MA54      Phys.Rev. 99, 7 (1955)

C.A.Mallmann, A.H.W.Aten, Jr., D.R.Bes, C.M.de McMillan

Gamma Rays of Tellurium-131 and Tellurium-129

doi: 10.1103/PhysRev.99.7
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