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NSR database version of May 22, 2024.

Search: Author = J.M.Arias

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2023BA10      J.Phys.(London) G50, 045104 (2023)

S.Baid, G.Levai, J.M.Arias

Extended analytical solutions of the Bohr Hamiltonian with the sextic oscillator: Pt-Os isotopes

NUCLEAR STRUCTURE 188,190,192,194,196,198Pt, 186,188,190,192Os; calculated energy levels, J, π, B(E2) ratios, E2 transitions, energy eigenvalues, ground-state bands. Comparison with available data.

doi: 10.1088/1361-6471/acb78a
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2023MA43      Phys.Rev. C 108, 034316 (2023)

E.Maya-Barbecho, S.Baid, J.M.Arias, J.E.Garcia-Ramos

At the borderline of shape coexistence: Mo and Ru

doi: 10.1103/PhysRevC.108.034316
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2022SA42      Phys.Rev. C 106, 064322 (2022)

A.Saiz, J.-E.Garcia-Ramos, J.M.Arias, L.Lamata, P.Perez-Fernandez

Digital quantum simulation of an extended Agassi model: Using machine learning to disentangle its phase-diagram

doi: 10.1103/PhysRevC.106.064322
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2021BO07      Eur.Phys.J. A 57, 2 (2021); Erratum Eur.Phys.J. A 57, 292 (2021)

M.Boyukata, C.E.Alonso, J.M.Arias, L.Fortunato, A.Vitturi

Unexpected transitional paths in the prolate to oblate shape phase transitions for Bose-Fermi systems

doi: 10.1140/epja/s10050-020-00308-4
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2021LE10      J.Phys.(London) G48, 085102 (2021)

G.Levai, J.M.Arias

Extended analytical solutions of the Bohr Hamiltonian with the sextic oscillator

NUCLEAR STRUCTURE 98,100,102,104,106,108Ru, 102,104,106,108,110Pd; calculated energy levels, J, π, B(E2). Comparison with available data.

doi: 10.1088/1361-6471/abcdf6
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2020CA30      Phys.Rev. C 102, 069801 (2020)

J.Casal, M.Rodriguez-Gallardo, J.M.Arias, E.Garrido, R.de Diego

Comment on "From Coulomb excitation cross sections to nonresonant astrophysical rates in three-body systems: The 17Ne case"

NUCLEAR REACTIONS 15O(2p, γ)17Ne, T=0.3-10 GK; calculated contribution to the reaction rate from 1/2+ states, and 1/2+ resonance. 208Pb(17Ne, X), E=500 MeV/nucleon; calculated Coulomb dissociation cross sections for the 1/2+ B(E1) distribution, for the total (1/2+ + 3/2+) B(E1) distribution, and from shifting of the 1/2+ resonance position. Comparison with experimental data. This comment is in response to critique by 2018Pa43 on the calculations in 2016Ca38 about the radiative capture for 17Ne formation.

doi: 10.1103/PhysRevC.102.069801
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2020FO02      Eur.Phys.J. A 56, 49 (2020)

L.Fortunato, C.E.Alonso, J.M.Arias, J.Casal, K.Hagino, J.A.Lay, E.G.Lanza, S.M.Lenzi, J.Lubian, T.Oishi, F.Perez-Bernal

An overview of the scientific contribution of Andrea Vitturi to nuclear physics

doi: 10.1140/epja/s10050-020-00034-x
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2020GA32      Chin.Phys.C 44, 124101 (2020)

J.E.Garcia-Ramos, J.M.Arias, A.Vitturi

Two-neutron transfer reactions as a tool to study the interplay between shape coexistence and quantum phase transitions

NUCLEAR STRUCTURE Hg, Pt, Zr, Sm; analyzed available data; calculated two-neutron transfer intensities using the Interacting Boson Model (IBM), including its version with configuration mixing (IBM-CM).

doi: 10.1088/1674-1137/abb4ca
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2018AR02      Phys.Rev. C 97, 044609 (2018)

A.Arazi, J.Casal, M.Rodriguez-Gallardo, J.M.Arias, R.Lichtenthaler Filho, D.Abriola, O.A.Capurro, M.A.Cardona, P.F.F.Carnelli, E.de Barbara, J.Fernandez Niello, J.M.Figueira, L.Fimiani, D.Hojman, G.V.Marti, D.Martinez Heimann, A.J.Pacheco

9Be + 120Sn scattering at near-barrier energies within a four-body model

NUCLEAR REACTIONS 120Sn(9Be, 9Be), (9Be, 9Be'), E=26, 27, 28, 29.5, 31, 42, 50 MeV; measured scattered particles, differential σ(E, θ) of elastic and inelastic channels using 20 UD tandem accelerator TANDAR at Buenos Aires; deduced excitation to first 2+ and 3- states in 120Sn. Comparison with optical model (OM) and four-body continuum-discretized coupled-channels (CDCC) calculations.

doi: 10.1103/PhysRevC.97.044609
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0902.

2018GA13      Phys.Rev. C 97, 054303 (2018)

J.E.Garcia-Ramos, J.Dukelsky, P.Perez-Fernandez, J.M.Arias

Phase diagram of an extended Agassi model

doi: 10.1103/PhysRevC.97.054303
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2017GA07      Phys.Rev. C 95, 054326 (2017)

J.E.Garcia-Ramos, P.Perez-Fernandez, J.M.Arias

Excited-state quantum phase transitions in a two-fluid Lipkin model

doi: 10.1103/PhysRevC.95.054326
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2016CA16      Phys.Rev. C 93, 041602 (2016)

J.Casal, M.Rodriguez-Gallardo, J.M.Arias, J.Gomez-Camacho

Determining astrophysical three-body radiative capture reaction rates from inclusive Coulomb break-up measurements

NUCLEAR REACTIONS 208Pb(11Li, X), E=24.3, 29.8 MeV; Pb(6He, X), E=18, 22 MeV; calculated breakup probability of 11Li in 9Li+n+n and 6He in α+n+n as a function of collision time, B(E1) distribution, and compared with experimental data. 9Li(2n, γ)11Li, T9=0.5-2.5; 4He(2n, γ)6He, T9=2.75-4; calculated reaction rates. Established a relation between radiative capture reaction rate and the inclusive Coulomb break-up probability.

doi: 10.1103/PhysRevC.93.041602
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2016CA38      Phys.Rev. C 94, 054622 (2016)

J.Casal, E.Garrido, R.de Diego, J.M.Arias, M.Rodriguez-Gallardo

Radiative capture reaction for 17Ne formation within a full three-body model

NUCLEAR STRUCTURE 17Ne; calculated energy and probability distribution of the ground state, matter and charge radii of 17Ne Borromean nucleus in a full three-body (15O+p+p) model using analytical transformed harmonic oscillator (THO), and the hyperspherical adiabatic (HA) expansion methods. Comparison with experimental values.

NUCLEAR REACTIONS 15O(2p, γ)17Ne, T9=0.1-10; calculated two-proton capture reaction rate using the THO method, including sequential and direct, resonant and nonresonant contributions, dominant E1 contributions to the reaction rate from the inverse photodissociation process. Comparison with previous theoretical calculations. Relevance to CNO cycles and rp-process.

doi: 10.1103/PhysRevC.94.054622
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2016GA09      Phys.Rev. C 93, 034336 (2016)

J.E.Garcia-Ramos, P.Perez-Fernandez, J.M.Arias, E.Freire

Phase diagram of the two-fluid Lipkin model: A "butterfly" catastrophe

doi: 10.1103/PhysRevC.93.034336
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2016LA20      Phys.Rev. C 94, 021602 (2016)

J.A.Lay, R.de Diego, R.Crespo, A.M.Moro, J.M.Arias, R.C.Johnson

Evidence of strong dynamic core excitation in 19C resonant break-up

NUCLEAR REACTIONS 1H(19C, X), E=70 MeV/nucleon; calculated differential σ(θ) for the first and the second 5/2+ resonance using XCDCC and XDDWBA approaches in valence-core model; deduced role of core excitations in the resonant breakup of 19C. Comparison with experimental data.

NUCLEAR STRUCTURE 19C; calculated levels, J, π using shell-model with OXBASH and the WBP interaction, and within semimicroscopic core-plus-valence-particle model (P-AMD) using 18C as an inert core. Comparison with experimental data.

doi: 10.1103/PhysRevC.94.021602
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2016MA19      Phys.Rev. C 93, 034332 (2016)

E.Mardones, J.Barea, C.E.Alonso, J.M.Arias

β-decay rates of 121-131Cs in the microscopic interacting boson-fermion model

NUCLEAR STRUCTURE 121,123,125,127,129,131Cs, 121,123,125,127,129,131Xe; calculated positive-parity levels, J using IBFM-2 model. Comparison with experimental values.

RADIOACTIVITY 121,123,125,127,129,131Cs(β+); calculated logft values with and without number operator approximation (NOA) using neutron-proton interacting boson fermion model (IBFM-2). Comparison with experimental values.

doi: 10.1103/PhysRevC.93.034332
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2016MO06      Acta Phys.Pol. B47, 821 (2016)

A.M.Moro, J.Lei, M.Gomez-Ramos, J.M.Arias, R.de Diego, J.Gomez-Camacho, J.A.Lay

Recent Developments for the Calculation of Elastic and Non-elastic Breakup of Weakly-bound Nuclei

doi: 10.5506/APhysPolB.47.821
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2015CA25      Phys.Rev. C 92, 054611 (2015)

J.Casal, M.Rodriguez-Gallardo, J.M.Arias

9Be elastic scattering on 208Pb and 27Al within a four-body reaction framework

NUCLEAR REACTIONS 208Pb(9Be, 9Be), E=38, 44, 60 MeV; 27Al(9Be, 9Be), E=14, 22, 32 MeV; calculated σ(θ, E); deduced effects of model space truncation, continuum couplings, dipolar contribution, and position of the projectile low-energy resonances. Four-body framework using the continuum-discretized coupled-channels (CDCC) method, with 9Be described in a three-body (α+α+n) model using the analytical transformed harmonic oscillator (THO) basis in hyperspherical coordinates. Comparison with available experimental data.

NUCLEAR STRUCTURE 9Be; calculated levels energies of 3/2-, 1/2+ and 5/2- states up to 10 MeV for an analytical THO basis.

doi: 10.1103/PhysRevC.92.054611
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2014CA36      Phys.Rev. C 90, 044304 (2014); Pub.Note Phys.Rev. C 94, 069903 (2016)

J.Casal, M.Rodriguez-Gallardo, J.M.Arias, I.J.Thompson

Astrophysical reaction rate for 9Be formation within a three-body approach

NUCLEAR STRUCTURE 9Be; calculated ground-state energy, matter and charge radii, sum rule ST(E1) using α+α+n three body approach and analytical transformed harmonic oscillator method for 9Be Borromean nucleus.

NUCLEAR REACTIONS 8Be(n, γ)9Be; calculated photodissociation σ(E)for α+α+n --> 9Be+γ reaction, reaction rate dependence on temperature, contribution of resonances to total photodissociation cross section, total astrophysical reaction rates using α+α+n three body approach and analytical transformed harmonic oscillator method. Comparison with experimental results.

doi: 10.1103/PhysRevC.90.044304
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2014DE15      Phys.Rev. C 89, 064609 (2014)

R.de Diego, J.M.Arias, J.A.Lay, A.M.Moro

Continuum-discretized coupled-channels calculations with core excitation

NUCLEAR REACTIONS 1H(11Be, X), E=10, 63.7, 200 MeV/nucleon; calculated differential breakup σ(θ, E). 64Zn(11Be, X), E=28.7 MeV; calculated quasielastic and breakup differential σ(θ). 208Pb(11Be, X), E=69 MeV/nucleon; calculated breakup differential σ(θ). Scattering of a two-body halo nucleus. Dipole strength distribution for 11Be deduced from Coulomb breakup experiments. Extended version of Continuum-discretized coupled-channels (XCDCC) method with core excitation. Comparison with experimental data.

doi: 10.1103/PhysRevC.89.064609
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2014LA02      Phys.Rev. C 89, 014333 (2014)

J.A.Lay, A.M.Moro, J.M.Arias, Y.Kanada-En'yo

Semi-microscopic folding model for the description of two-body halo nuclei

NUCLEAR STRUCTURE 19C, 11Be; calculated levels, J, π, spectroscopic factors for ground state and low-lying resonances for one-neutron halo nuclei. 10Be, 18C; calculated neutron and proton transition densities for ground state and first 2+ state, rms radii. Particle-plus-core model (PRM), particle-core folding potential based in antisymmetrized molecular dynamics (AMD) transition densities (P-AMD), and shell model calculations using WBT interaction. Comparison of levels, J, π with experimental data.

doi: 10.1103/PhysRevC.89.014333
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2013CA15      Phys.Rev. C 88, 014327 (2013)

J.Casal, M.Rodriguez-Gallardo, J.M.Arias

Analytical transformed harmonic oscillator basis for three-body nuclei of astrophysical interest: Application to 6He

NUCLEAR STRUCTURE 6He; calculated levels, J, π, ground-state energy, matter radius, B(E1) distribution, radiative capture reaction rate of astrophysics interest. Three-body α+n+n Borromean system. Analytical transformed harmonic oscillator (THO) method. Comparison with previous theoretical studies.

doi: 10.1103/PhysRevC.88.014327
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2012LA12      Phys.Rev. C 85, 054618 (2012)

J.A.Lay, A.M.Moro, J.M.Arias, J.Gomez-Camacho

Particle motion in a deformed potential using a transformed oscillator basis

NUCLEAR STRUCTURE 11Be; calculated wave functions of ground and excited states, level energies, level density, B(E1), B(E2). Pseudostate (PS) basis for a particle moving in a deformed potential, transformed harmonic oscillator (THO) functions, using a local scale transformation (LST). 10Be+n two body model. Comparison with experimental data.

doi: 10.1103/PhysRevC.85.054618
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2011BA04      Phys.Rev. C 83, 024307 (2011)

J.Barea, C.E.Alonso, J.M.Arias

Odd-even 147-153Pm isotopes within the neutron-proton interacting boson-fermion model

NUCLEAR STRUCTURE 147,149,151,153Pm; calculated levels, J, π, bands, B(M1), B(E2), spectroscopic factors for pickup and stripping reactions, electrical quadrupole and magnetic dipole moments. Neutron-proton interacting boson-fermion model (IBFM-2). Comparison with experimental data.

doi: 10.1103/PhysRevC.83.024307
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2011FO03      Int.J.Mod.Phys. E20, 207 (2011)

L.Fortunato, C.E.Alonso, J.M.Arias, M.Boyukata, A.Vitturi

Odd nuclei and shape phase transitions: The role of the unpaired Fermion

doi: 10.1142/S0218301311017533
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2011FO09      Phys.Rev. C 84, 014326 (2011)

L.Fortunato, C.E.Alonso, J.M.Arias, J.E.Garcia-Ramos, A.Vitturi

Phase diagram for a cubic- Q interacting boson model Hamiltonian: Signs of triaxiality

doi: 10.1103/PhysRevC.84.014326
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2010BA32      Phys.Rev. C 82, 024316 (2010)

J.Barea, J.M.Arias, J.E.Garcia Ramos

Relationship between X(5) models and the interacting boson model

doi: 10.1103/PhysRevC.82.024316
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2010BO08      Phys.Rev. C 82, 014317 (2010)

M.Boyukata, C.E.Alonso, J.M.Arias, L.Fortunato, A.Vitturi

Shape phase transition in odd-even nuclei: From spherical to deformed γ-unstable shapes

doi: 10.1103/PhysRevC.82.014317
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2010LA09      Phys.Rev. C 82, 024605 (2010)

J.A.Lay, A.M.Moro, J.M.Arias, J.Gomez-Camacho

Exploring continuum structures with a pseudo-state basis

NUCLEAR REACTIONS 12C, 208Pb(6He, 6He), E=240 MeV/nucleon; 12C(11Be, 11Be), E=67 MeV/nucleon; calculated differential σ(E), σ(θ), energy breakup differential σ(E), B(E1) and B(E2) transition probabilities for the 6He=α+2n system, and scattering phase shifts. Calculations based on treatment of a weakly bound system in terms square-integrable functions, or pseudo-state (PS) generated by a parametric local scale transformation (LST) to the transformed harmonic oscillator (HO) basis. Comparison with experimental data.

doi: 10.1103/PhysRevC.82.024605
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2010LE05      Phys.Rev. C 81, 044304 (2010)

G.Levai, J.M.Arias

Search for critical-point nuclei in terms of the sextic oscillator

NUCLEAR STRUCTURE 102,104,106,108,110Pd, 98,100,102,104,106,108Ru, 106,108,110,112,114,116Cd; analyzed energies, J, π; calculated B(E2), and E0 transition strengths using sextic oscillator model for spherical to deformed γ-unstable nuclei. Comparison with experimental data.

doi: 10.1103/PhysRevC.81.044304
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2009AL04      Phys.Rev. C 79, 014306 (2009)

C.E.Alonso, J.M.Arias, L.Fortunato, A.Vitturi

UBF(5) to SUBF(3) shape phase transition in odd nuclei for j=1/2, 3/2, and 5/2 orbits: The role of the odd particle at the critical point

doi: 10.1103/PhysRevC.79.014306
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2009IN02      Phys.Rev. C 80, 034321 (2009)

I.Inci, C.E.Alonso, J.M.Arias, L.Fortunato, A.Vitturi

Coherent state approach to the interacting boson model: Test of its validity in the transitional region

doi: 10.1103/PhysRevC.80.034321
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2009MO36      Phys.Rev. C 80, 054605 (2009)

A.M.Moro, J.M.Arias, J.Gomez-Camacho, F.Perez-Bernal

Analytical transformed harmonic oscillator basis for continuum discretized coupled channels calculations

NUCLEAR REACTIONS 58Ni(d, d), (d, X), E=80 MeV; 40Ca(6Li, 6Li), (6Li, X), E=156 MeV; 208Pb(6He, 6He), (6He, X), E=22 MeV, 240 MeV/nucleon; calculated elastic σ(θ), and breakup S-matrix elements using continuum-discretized coupled-channels (CDCC) method.

doi: 10.1103/PhysRevC.80.054605
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2009RO26      Phys.Rev. C 80, 051601 (2009)

M.Rodriguez-Gallardo, J.M.Arias, J.Gomez-Camacho, A.M.Moro, I.J.Thompson, J.A.Tostevin

Four-body continuum-discretized coupled-channels calculations

NUCLEAR REACTIONS 208Pb(6He, X), E=22 MeV; calculated σ(θ), angular distributions , B(E1) and B(E2) distributions using continuum-discretized coupled channels calculations. calculated . Comparison with experimental data.

doi: 10.1103/PhysRevC.80.051601
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2008AL23      Phys.Rev. C 78, 017301 (2008)

C.E.Alonso, J.M.Arias, L.Fortunato, N.Pietralla, A.Vitturi

Population of mixed-symmetry states via α transfer reactions

doi: 10.1103/PhysRevC.78.017301
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2008GA14      Phys.Rev. C 77, 054307 (2008)

J.E.Garcia-Ramos, J.M.Arias

Relation between E(5) models and the interacting boson model

doi: 10.1103/PhysRevC.77.054307
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2008RO16      Phys.Rev. C 77, 064609 (2008)

M.Rodriguez-Gallardo, J.M.Arias, J.Gomez-Camacho, R.C.Johnson, A.M.Moro, I.J.Thompson, J.A.Tostevin

Four-body continuum-discretized coupled-channels calculations using a transformed harmonic oscillator basis

NUCLEAR REACTIONS 12C(6He, 6He), E=229.8 MeV; 64Zn(6He, 6He), E=10.0, 13.6 MeV; 208Pb(6He, 6He), E=22 MeV; calculated energy spectra, σ(θ). Comparison with experimental data.

doi: 10.1103/PhysRevC.77.064609
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2007AL06      Phys.Rev.Lett. 98, 052501 (2007)

C.E.Alonso, J.M.Arias, A.Vitturi

Critical-Point Symmetries in Boson-Fermion Systems: The Case of Shape Transitions in Odd Nuclei in a Multiorbit Model

doi: 10.1103/PhysRevLett.98.052501
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2007AL34      Phys.Rev. C 75, 064316 (2007)

C.E.Alonso, J.M.Arias, A.Vitturi

Shape phase transition in odd nuclei in a multi-j model: The UB(6) (X) UF(12) case

doi: 10.1103/PhysRevC.75.064316
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2007AR03      Phys.Rev. C 75, 014301 (2007)

J.M.Arias, J.Dukelsky, J.E.Garcia-Ramos, J.Vidal

Two-level interacting boson models beyond the mean field

doi: 10.1103/PhysRevC.75.014301
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2007CR07      Eur.Phys.J. Special Topics 150, 13 (2007)

R.Crespo, A.M.Moro, I.J.Thompson, M.Rodriguez-Gallardo, J.Gomez-Camacho, J.M.Arias

Exploring the 6He continuum sea through proton inelastic collisions

NUCLEAR REACTIONS 6He(p, p'), E=717 MeV; calculated σ(θ) using the MST framework.

doi: 10.1140/epjst/e2007-00253-1
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2007FO08      Phys.Rev. C 76, 014316 (2007)

R.Fossion, C.E.Alonso, J.M.Arias, L.Fortunato, A.Vitturi

Shape-phase transitions and two-particle transfer intensities

doi: 10.1103/PhysRevC.76.014316
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2007MO19      Phys.Rev. C 75, 064607 (2007)

A.M.Moro, K.Rusek, J.M.Arias, J.Gomez-Camacho, M.Rodriguez-Gallardo

Improved di-neutron cluster model for 6He scattering

NUCLEAR REACTIONS 64Zn, 197Au, 208Pb, 209Bi(6He, 6He), E=10-40 MeV; calculated cross sections and angular distributions using a two-body di-neutron cluster model to describe the structure of 6He.

doi: 10.1103/PhysRevC.75.064607
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2007RO29      Eur.Phys.J. Special Topics 150, 51 (2007)

M.Rodriguez-Gallardo, J.M.Arias, J.Gomez-Camacho, R.C.Johnson, A.M.Moro, I.J.Thompson, J.A.Tostevin

Continuum effects: Structure and reactions of 6He

NUCLEAR STRUCTURE 6He; calculated B(E1), B(E2) distributions using the Transformed Harmonic Oscillator method.

NUCLEAR REACTIONS 12C(6He, 6He), E=229.8 MeV; calculated elastic scattering σ(θ).

doi: 10.1140/epjst/e2007-00264-x
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2006AL18      Phys.Rev. C 74, 027301 (2006)

C.E.Alonso, J.M.Arias, A.Vitturi

One-particle spectroscopic intensities as a signature of shape phase transition: The γ-unstable case

doi: 10.1103/PhysRevC.74.027301
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2006MO12      Phys.Rev. C 73, 044612 (2006)

A.M.Moro, F.Perez-Bernal, J.M.Arias, J.Gomez-Camacho

Coulomb breakup in a transformed harmonic oscillator basis

NUCLEAR REACTIONS 58Ni(8B, p7Be), E=25.8 MeV; calculated breakup σ(E, θ). Continuum discretized coupled-channels model, transformed harmonic oscillator basis.

doi: 10.1103/PhysRevC.73.044612
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2006VI02      Phys.Rev. C 73, 054305 (2006)

J.Vidal, J.M.Arias, J.Dukelsky, J.E.Garcia-Ramos

Scalar two-level boson model to study the interacting boson model phase diagram in the Casten triangle

doi: 10.1103/PhysRevC.73.054305
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2005AL46      Phys.Rev. C 72, 061302 (2005)

C.E.Alonso, J.M.Arias, L.Fortunato, A.Vitturi

Phase transitions in the interacting boson fermion model: The γ-unstable case

doi: 10.1103/PhysRevC.72.061302
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2005BA03      Phys.Rev. C 71, 014314 (2005)

J.Barea, C.E.Alonso, J.M.Arias, J.Jolie

One nucleon transfer operator and nuclear supersymmetry

NUCLEAR STRUCTURE 195Pt; calculated one-nucleon transfer strengths. Interacting boson-fermion model, importance of consistent coupling order for angular momenta discussed.

doi: 10.1103/PhysRevC.71.014314
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2005DU17      Phys.Rev. C 72, 011301 (2005)

S.Dusuel, J.Vidal, J.M.Arias, J.Dukelsky, J.E.Garcia-Ramos

Finite-size scaling exponents in the interacting boson model

doi: 10.1103/PhysRevC.72.011301
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2005DU27      Phys.Rev. C 72, 064332 (2005)

S.Dusuel, J.Vidal, J.M.Arias, J.Dukelsky, J.E.Garcia-Ramos

Continuous unitary transformations in two-level boson systems

doi: 10.1103/PhysRevC.72.064332
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2005GA43      Phys.Rev. C 72, 037301 (2005)

J.E.Garcia-Ramos, J.Dukelsky, J.M.Arias

β4 potential at the U(5)-O(6) critical point of the interacting boson model

doi: 10.1103/PhysRevC.72.037301
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2005RO27      Phys.Rev. C 72, 024007 (2005)

M.Rodriguez-Gallardo, J.M.Arias, J.Gomez-Camacho, A.M.Moro, I.J.Thompson, J.A.Tostevin

Three-body continuum discretization in a basis of transformed harmonic oscillator states

NUCLEAR STRUCTURE 6He; calculated B(E1), B(E2) distributions, sum rules. Transformed harmonic oscillator method, three-body continuum.

doi: 10.1103/PhysRevC.72.024007
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2004AR27      Phys.Rev.Lett. 93, 212501 (2004)

J.M.Arias, J.E.Garcia-Ramos, J.Dukelsky

Phase Diagram of the Proton-Neutron Interaction Boson Model

doi: 10.1103/PhysRevLett.93.212501
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2004GO40      Few-Body Systems 34, 45 (2004)

J.Gomez-Camacho, J.M.Arias, A.Moro, F.Perez-Bernal

Discretizing the Continuum

NUCLEAR REACTIONS 208Pb(d, X), E=50 MeV; calculated σ(E), breakup channels contributions. Orthogonal polynomial method for discretization of continuum. Application to diatomic molecules also discussed.

doi: 10.1007/s00601-004-0025-7
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2004LE05      Phys.Rev. C 69, 014304 (2004)

G.Levai, J.M.Arias

The sextic oscillator as a γ-independent potential

NUCLEAR STRUCTURE 134Ba; calculated relative level energies, B(E2). Sextic oscillator, comparison with data.

doi: 10.1103/PhysRevC.69.014304
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2004RO15      Phys.Rev. C 69, 034308 (2004)

M.Rodriguez-Gallardo, J.M.Arias, J.Gomez-Camacho

Describing resonances in a discrete basis

doi: 10.1103/PhysRevC.69.034308
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2003AR23      Phys.Rev.Lett. 91, 162502 (2003)

J.M.Arias, J.Dukelsky, J.E.Garcia-Ramos

Quantum Phase Transitions in the Interacting Boson Model: Integrability, Level Repulsion, and Level Crossing

doi: 10.1103/PhysRevLett.91.162502
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2003AR24      Phys.Rev. C 68, 041302 (2003)

J.M.Arias, C.E.Alonso, A.Vitturi, J.E.Garcia-Ramos, J.Dukelsky, A.Frank

U(5)-O(6) transition in the interacting boson model and the E(5) critical point symmetry

doi: 10.1103/PhysRevC.68.041302
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2003GA22      Phys.Rev. C 68, 024307 (2003)

J.E.Garcia-Ramos, J.M.Arias, J.Barea, A.Frank

Phase transitions and critical points in the rare-earth region

NUCLEAR STRUCTURE 144,146,148,150,152,154Nd, 146,148,150,152,154,156,158,160Sm, 148,150,152,154,156,158,160,162Gd, 150,152,154,156,158,160,162,164,166Dy; calculated levels, J, π, B(E2), two-neutron separation energies; deduced phase transitions, related features. Interacting boson model.

doi: 10.1103/PhysRevC.68.024307
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2002BA27      Phys.Rev. C65, 034328 (2002)

J.Barea, C.E.Alonso, J.M.Arias

Boson-Conserving One-Nucleon Transfer Operator in the Interacting Boson Model

doi: 10.1103/PhysRevC.65.034328
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2002FR02      Phys.Rev. C65, 014301 (2002)

A.Frank, C.E.Alonso, J.M.Arias

Search for E(5) Symmetry in Nuclei: The Ru isotopes

NUCLEAR STRUCTURE 96,98,100,102,104,106,108,110Ru; calculated levels, J, π; deduced phase transition, deformation features. Interacting boson model.

doi: 10.1103/PhysRevC.65.014301
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2002MO02      Phys.Rev. C65, 011602 (2002)

A.M.Moro, J.M.Arias, J.Gomez-Camacho, I.Martel, F.Perez-Bernal, R.Crespo, F.Nunes

Coupling to Breakup Channels using a Transformed Harmonic Oscillator Basis

NUCLEAR REACTIONS 208Pb(d, d), (d, np), E=50 MeV; calculated elastic and breakup σ(θ). Transformed harmonic oscillator basis.

doi: 10.1103/PhysRevC.65.011602
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2001AL03      Nucl.Phys. A679, 359 (2001)

C.E.Alonso, M.V.Andres, J.M.Arias, E.G.Lanza, A.Vitturi

Coupling of Dipole Mode to γ-Unstable Quadrupole Oscillations

doi: 10.1016/S0375-9474(00)00360-2
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2001AR03      Phys.Rev. C63, 034308 (2001)


E2 Transitions and Quadrupole Moments in the E(5) Symmetry

NUCLEAR STRUCTURE 134Ba; calculated levels, J, π, B(E2). Intrinsic state formalism, E(5) symmetry, comparison with data.

doi: 10.1103/PhysRevC.63.034308
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2000GA09      Phys.Rev. C61, 034305 (2000)

J.E.Garcia-Ramos, J.M.Arias, J.Dukelsky, P.Van Isacker

Intrinsic State for an Extended Version of the Interacting Boson Model

doi: 10.1103/PhysRevC.61.034305
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2000GA13      Phys.Rev. C61, 047305 (2000)

J.E.Garcia-Ramos, C.E.Alonso, J.M.Arias, P.Van Isacker

Anharmonic Double-γ Vibrations in Nuclei and Their Description in the Interacting Boson Model

NUCLEAR STRUCTURE 166Er; calculated levels, J, π, B(E2), one-, two-phonon vibrational bands features. Interacting boson model.

doi: 10.1103/PhysRevC.61.047305
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2000GA53      Phys.Rev. C62, 064309 (2000)

J.E.Garcia-Ramos, J.M.Arias, P.Van Isacker

Anharmonic Double-Phonon Excitations in the Interacting Boson Model

NUCLEAR STRUCTURE 164Dy, 166,168Er; calculated levels, J, π, B(E2), vibrational bands features; deduced mechanism for anharmonicity. Interacting boson model.

doi: 10.1103/PhysRevC.62.064309
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2000GI12      Eur.Phys.J. A 8, 41 (2000)

A.Gizon, B.Weiss, P.Paris, C.F.Liang, J.Genevey, J.Gizon, V.Barci, Gh.Cata-Danil, J.S.Dionisio, J.M.Lagrange, M.Pautrat, J.Vanhorenbeeck, Ch.Vieu, L.Zolnai, J.M.Arias, J.Barea, Ch.Droste

Level Structure of 123Cs Observed from 123Ba Decay and Described using the IBFM and CQPC Models

RADIOACTIVITY 123Ba(EC) [from La(3He, X)]; measured Eγ, Iγ, E(ce), I(ce), γγ-, (X-ray)γ-, (ce)γ-coin. 123Cs deduced levels, J, π, configurations. Level systematics in Cs isotopes discussed. Mass-separated source.

NUCLEAR REACTIONS In(12C, X)123Cs, E=57 MeV; measured Eγ, Iγ(t). 123Cs deduced isomers T1/2.

NUCLEAR STRUCTURE 123Cs; calculated levels, J, π. Interacting boson-fermion model, core-quasiparticle coupling model.

doi: 10.1007/s100530050007
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1998GA03      Phys.Rev. C57, R479 (1998)

J.E.Garcia-Ramos, J.M.Arias, J.Dukelsky, E.Moya de Guerra, P.Van Isacker

Hartree-Bose Mean-Field Approximation for the Interacting Boson Model (IBM-3)

doi: 10.1103/PhysRevC.57.R479
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1998GA22      Nucl.Phys. A637, 529 (1998)

J.E.Garcia-Ramos, C.E.Alonso, J.M.Arias, P.Van Isacker, A.Vitturi

Intrinsic Structure of Two-Phonon States in the Interacting Boson Model

doi: 10.1016/S0375-9474(98)00243-7
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1996AL17      Nucl.Phys. A604, 53 (1996)

C.E.Alonso, J.M.Arias, H.M.Sofia, A.Vitturi

Cranking Approach to the Interacting Boson Model: The behaviour of the intrinsic state with angular momentum

NUCLEAR STRUCTURE 156Gd; calculated levels, moment of inertia. Self-consistent cranking formalism, interacting boson model basis.

doi: 10.1016/0375-9474(96)00121-2
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1995AL06      Nucl.Phys. A586, 100 (1995)

C.E.Alonso, J.M.Arias, A.Frank, H.M.Sofia, S.M.Lenzi, A.Vitturi

Description of Octupole-Deformed Nuclei within the Interacting Boson and Interacting Boson-Fermion Models

NUCLEAR STRUCTURE 226Ra; calculated levels; deduced in-band, intra-band transitions related features. Interacting boson-fermion model.

doi: 10.1016/0375-9474(94)00794-N
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1994PI04      Phys.Rev. C50, 423 (1994)

S.Pittel, J.M.Arias, J.Dukelsky, A.Frank

Consistent Baryon Mapping of Quark Systems

doi: 10.1103/PhysRevC.50.423
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1993BA24      Phys.Rev.Lett. 71, 975 (1993)

I.Bauske, J.M.Arias, P.von Brentano, A.Frank, H.Friedrichs, R.D.Heil, R.-D.Herzberg, F.Hoyler, P.Van Isacker, U.Kneissl, J.Margarf, H.H.Pitz, C.Wesselborg, A.Zilges

First Observation of Scissors Mode States in an Odd-Mass Nucleus

NUCLEAR REACTIONS 163Dy(γ, γ'), E=1.942-3.107 MeV bremsstrahlung; measured integrated scattering σ, γ-spectra. 163Dy levels deduced B(λ), gΓ0, Γ10. Interacting boson-fermion model.

doi: 10.1103/PhysRevLett.71.975
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1991AR07      Nucl.Phys. A528, 144 (1991)

J.M.Arias, M.Gallardo, J.Gomez-Camacho

Spurious Effects of the Pairing Forces on the Dipole Sum Rule

NUCLEAR STRUCTURE 120Sn; calculated dipole strength distribution, sum rule features; deduced pairing force spurious effects role.

doi: 10.1016/0375-9474(91)90421-2
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1991FR07      Nucl.Phys. A531, 125 (1991)

A.Frank, J.M.Arias, P.Van Isacker

Search for Scissors States in Odd-Mass Nuclei

NUCLEAR STRUCTURE 166Er; calculated levels. 165Ho; calculated levels, μ, quadrupole moment, δ(E2/M1), B(λ). Interacting boson-fermion model.

doi: 10.1016/0375-9474(91)90573-O
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1988AL19      J.Phys.(London) G14, 877 (1988)

C.E.Alonso, J.M.Arias, M.Lozano

Europium Isotopes Studied with the IBFA-2 Model

NUCLEAR STRUCTURE 147,149,151,153,155Eu; calculated levels, μ, quadrupole moment, B(E2), isotope shifts. Interacting boson model.

doi: 10.1088/0305-4616/14/7/008
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1987AL21      J.Phys.(London) G13, 1269 (1987)

C.E.Alonso, J.M.Arias, M.Lozano

Nuclear Structure Studies of the Odd-Mass Ba and La Isotopes with the IBFA-2 Model

NUCLEAR STRUCTURE 121,123,125,127,129,131,133,134Ba, 127,129,131,133,135,137,139La; calculated levels, B(λ), μ, isotope shifts, charge radii. Interacting boson-fermion model.

doi: 10.1088/0305-4616/13/10/015
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1987AR14      Nucl.Phys. A466, 295 (1987)

J.M.Arias, C.E.Alonso, M.Lozano

Odd-Even Nuclei in the A = 100 Nuclear Region

NUCLEAR STRUCTURE 101,103,105,107Pd, 99,101,103,105Ru, 99,101,103,105Rh, 97,99,101,103Tc; calculated levels, B(λ), μ, δ, single particle transfer spectroscopic strengths.

doi: 10.1016/0375-9474(87)90443-X
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1986AL16      Phys.Lett. 177B, 130 (1986)

C.E.Alonso, J.M.Arias, M.Lozano

Backbending of Dy Isotopes Described with the Neutron-Protron IBA Plus Two-Quasiparticle Model

NUCLEAR STRUCTURE 154,156,158Dy; calculated levels, B(λ). Neutron-protron interacting boson model.

doi: 10.1016/0370-2693(86)91041-5
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1986AR03      Phys.Rev. C33, 1482 (1986)

J.M.Arias, C.E.Alonso, M.Lozano

Test of the Proton-Neutron Interacting Boson-Fermion Model in the Region around A = 190

NUCLEAR STRUCTURE 189,187Ir; calculated levels, band systematics, intruder band, β(λ). 185,195Ir; calculated levels, band systematics. 191,193Ir; calculated levels, band systematics, quadrupole moments, μ, B(M1). 185,187,189,191,193,195Pt, 185,187,189,191,193,195,197Au; calculated levels, band systematics. Interacting boson model.

doi: 10.1103/PhysRevC.33.1482
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1985AL25      Phys.Lett. 164B, 241 (1985)

C.E.Alonso, J.M.Arias, F.Iachello

Nuclear Structure Information Obtained from Charge Radii

NUCLEAR STRUCTURE 126,128,129,130,131,132,133,134Xe, 121,123,125,127,129,131,133,135Cs; analyzed rms charge radii data. Interacting boson model.

doi: 10.1016/0370-2693(85)90317-X
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1985AR18      Nucl.Phys. A445, 333 (1985)

J.M.Arias, C.E.Alonso, R.Bijker

Description of the Odd-Even Xenon and Cesium Isotopes in the Proton-Neutron Interacting Boson-Fermion Model

NUCLEAR STRUCTURE 109,111,113,115,117,119,121,123,125,127,129,131,133Xe, 110,112,114,116,118,120,122,124,126,128,130,132,134Cs; calculated levels, B(λ). Interacting boson model.

doi: 10.1016/0375-9474(85)90073-9
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1984AL19      Phys.Lett. 144B, 141 (1984)

C.E.Alonso, J.M.Arias, R.Bijker, F.Iachello

A Calculation of Low-Lying Collective States in Odd-Even Nuclei

NUCLEAR STRUCTURE 109,111,113,115,117,119,121,123,125,127,129Xe; 111,113,115,117,119,121,123,125,127,129,131,133Cs; calculated negative parity states.

doi: 10.1016/0370-2693(84)91790-8
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1983HA38      Phys.Lett. 133B, 9 (1983)

H.Hanewinkel, W.Gast, U.Kaup, H.Harter, A.Dewald, A.Gelberg, R.Reinhardt, P.von Brentano, A.Zemel, C.E.Alonso, J.M.Arias

Prealignment B(E2)-Anomaly in 124Xe

NUCLEAR REACTIONS 122Te(α, 2n), E=24, 25 MeV; 108Pd(19F, 2np), E=60-75 MeV; 114Cd(13C, 3n), E=46-58 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), σ(Eγ), I(ce), recoil distance Doppler shift. 124Xe deduced levels, T1/2, γ-branching, B(E2), ratios, prealignment anomaly, band structure. Interacting boson model.

doi: 10.1016/0370-2693(83)90093-X
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