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NSR database version of April 11, 2024.

Search: Author = J.G.Hirsch

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2017SA15      Nucl.Phys. A961, 68 (2017)

A.Saxena, P.C.Srivastava, J.G.Hirsch, V.K.B.Kota, M.J.Ermamatov

35, 37, 39S isotopes in sd-pf space: Shell-model interpretation

NUCLEAR STRUCTURE 35,37,39S; calculated levels, J, π, B(M1), B(E1), B(M2), B(E3) using shell model with SDPF-U interactions. Compared to data and calculations using other interactions.

doi: 10.1016/j.nuclphysa.2017.02.008
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2013RA04      Phys.Rev. C 87, 014301 (2013)

P.K.Rath, R.Chandra, K.Chaturvedi, P.Lohani, P.K.Raina, J.G.Hirsch

Uncertainties in nuclear transition matrix elements for β+β+ and eβ+ modes of neutrinoless positron double-β decay within the projected Hartree-Fock-Bogoliubov model

RADIOACTIVITY 96Ru, 102Pd, 106Cd, 124Xe, 130Ba, 156Dy(2β+), (β+EC); calculated nuclear transition matrix elements and half-lives for neutrinoless double β decay for light and heavy Majorana neutrino exchanges using the projected Hartree-Fock-Bogoliubov (PHFB) model with different parametrizations of pairing plus multipolar two-body interactions.

doi: 10.1103/PhysRevC.87.014301
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2013RA31      Phys.Rev. C 88, 064322 (2013)

P.K.Rath, R.Chandra, K.Chaturvedi, P.Lohani, P.K.Raina, J.G.Hirsch

Neutrinoless ββ decay transition matrix elements within mechanisms involving light Majorana neutrinos, classical Majorons, and sterile neutrinos

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements for the 0νββ decay mode involving light Majorana neutrinos, classical Majorons, and sterile neutrinos; deduced limits on the effective average neutrino mass from available limits on experimental half-lives. Projected-Hartree-Fock-Bogoliubov (PHFB) model with four different parameterizations of the pairing plus multipolar type effective two-body interaction, two sets of form factors, and two (three) different parameterizations of Jastrow type of short-range correlations.

doi: 10.1103/PhysRevC.88.064322
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2012BA02      Nucl.Phys. A874, 81 (2012)

C.Barbero, J.G.Hirsch, A.E.Mariano

Deformation and shell effects in nuclear mass formulas

NUCLEAR STRUCTURE A≈20-260; calculated mass excess, deformation using LDM with Duflo-Zuker mass model.

doi: 10.1016/j.nuclphysa.2011.11.005
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2012CA42      J.Phys.:Conf.Ser. 387, 012021 (2012)

O.Castanos, R.Lopez-Pena, E.Nahmad-Achar, J.G.Hirsch

Quantum phase transitions in the LMG model by means of quantum information concepts

doi: 10.1088/1742-6596/387/1/012021
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2012HI12      J.Phys.:Conf.Ser. 387, 012020 (2012)

J.G.Hirsch, P.C.Srivastava

Shell model description of Ge isotopes

NUCLEAR STRUCTURE 70,72,74,74,76,78,80,82Ge; calculated low-lying levels, J, π, rotational band, B(E2), quadrupole moment, orbitals occupation using shell model with different interactions. Compared to data.

doi: 10.1088/1742-6596/387/1/012020
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2012RA04      Phys.Rev. C 85, 014308 (2012)

P.K.Rath, R.Chandra, P.K.Raina, K.Chaturvedi, J.G.Hirsch

Uncertainties in nuclear transition matrix elements for neutrinoless ββ decay: The heavy Majorana neutrino mass mechanism

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements MN(0ν) and estimated uncertainties due to the exchange of heavy Majorana neutrino. Projected-Hartree-Fock-Bogoliubov (PHFB) model with four different parameterization of the pairing plus the multipolar type of effective two-body interaction and three different parameterization of the Jastrow type of short-range correlations.

doi: 10.1103/PhysRevC.85.014308
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2010ME12      Nucl.Phys. A843, 14 (2010)

J.Mendoza-Temis, J.G.Hirsch, A.P.Zuker

The anatomy of the simplest Duflo-Zuker mass formula

ATOMIC MASSES Z=8-108; A=16-256; analyzed masses using DZ10 model. Comparison with other models and data.

doi: 10.1016/j.nuclphysa.2010.05.055
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2010MO02      Phys.Rev. C 81, 024304 (2010)

I.O.Morales, P.Van Isacker, V.Velazquez, J.Barea, J.Mendoza-Temis, J.C.Lopez Vieyra, J.G.Hirsch, A.Frank

Image reconstruction techniques applied to nuclear mass models

ATOMIC MASSES N=8-160, Z=8-106; analyzed masses and S(2n) for about 7000 nuclides in N-Z plane using image reconstruction techniques. Comparison of measured and calculated masses using the liquid-drop model (LDM), the liquid-drop model with schematic shell correction (LDMM), the Duflo-Zuker model (DZ), and the Garvey-Kelson relations. Improved predictions of nuclear mass models.

doi: 10.1103/PhysRevC.81.024304
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2010RA06      J.Phys.(London) G37, 055108 (2010)

P.K.Rath, R.Chandra, S.Singh, P.K.Raina, J.G.Hirsch

Quadrupolar correlations and deformation effect on two-neutrino ϵβ+ and ϵϵ modes of 156Dy isotope

NUCLEAR STRUCTURE 156Dy; calculated T1/2 for ECβ+ and 2EC-decay; deduced the effect of quadrupole deformation on the nuclear matrix element. HFB framework.

doi: 10.1088/0954-3899/37/5/055108
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2010RA20      Phys.Rev. C 82, 064310 (2010)

P.K.Rath, R.Chandra, K.Chaturvedi, P.K.Raina, J.G.Hirsch

Uncertainties in nuclear transition matrix elements for neutrinoless ββ decay within the projected-Hartree-Fock-Bogoliubov model

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated nuclear transition matrix elements (NTME), short-range correlations (SRC) and radial evolutions of NTMEs, limit on effective light Majorana neutrino mass, and half-lives for neutrinoless ββ decay in 0+ to 0+ transitions using projected-Hartree-Fock-Bogoliubov (PHFB) model with several different parametrizations.

doi: 10.1103/PhysRevC.82.064310
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2009CH23      Europhys.Lett. 86, 32001 (2009)

R.Chandra, K.Chaturvedi, P.K.Rath, P.K.Raina, J.G.Hirsch

Multipolar correlations and deformation effect on nuclear transition matrix elements of double-β decay

NUCLEAR STRUCTURE 94,96Zr, 94,96,98,100Mo, 98,100,104Ru, 104,110Pd, 110Cd, 128,130Te, 128,130Xe, 150Nd, 150Sm; Calculated deformation parameters, nuclear transition matrix elements for 2β-decay. PHFB function, two-body interaction.

doi: 10.1209/0295-5075/86/32001
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2009MO21      Nucl.Phys. A828, 113 (2009)

I.O.Morales, J.C.Lopez Vieyra, J.G.Hirsch, A.Frank

How good are the Garvey?Kelson predictions of nuclear masses?

ATOMIC MASSES Z=60-130, A=160-296; calculated masses using Garvey-Kelson model. Comparison with three other mass models.

doi: 10.1016/j.nuclphysa.2009.06.001
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2009RA26      Phys.Rev. C 80, 044303 (2009)

P.K.Rath, R.Chandra, K.Chaturvedi, P.K.Raina, J.G.Hirsch

Deformation effects and neutrinoless positron ββ decay of 96Ru, 102Pd, 106Cd, 124Xe, 130Ba, and 156Dy isotopes within a mechanism involving Majorana neutrino mass

RADIOACTIVITY 96Ru, 102Pd, 106Cd, 124Xe, 130Ba, 156Dy(2β+), (β+EC); calculated nuclear transition matrix elements (NTME) and half-lives in neutrinoless double-beta decay from 0+ to 0+ states using projected Hartree-Fock-Bogoliubov framework. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.044303
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2008BA17      Phys.Rev. C 77, 041304 (2008)

J.Barea, A.Frank, J.G.Hirsch, P.Van Isacker, S.Pittel, V.Velazquez

Garvey-Kelson relations and the new nuclear mass tables

NUCLEAR STRUCTURE Z=5-100, N=8-270; deduced Garvey-Kelson mass relations. Finite-range liquid-drop model (FRDM), Duflo-Zuker(DZ) model, and Hartree-Fock-Bogoliubov model. Comparison with evaluated masses.

doi: 10.1103/PhysRevC.77.041304
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2008CH27      Phys.Rev. C 78, 054302 (2008)

K.Chaturvedi, R.Chandra, P.K.Rath, P.K.Raina, J.G.Hirsch

Nuclear deformation and neutrinoless double-β decay of 94, 96Zr, 98, 100Mo, 104Ru, 110Pd, 128, 130Te, and 150Nd nuclei within a mechanism involving neutrino mass

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd, 128,130Te, 150Nd(2β-); calculated limits on half-lives, neutrino masses. Hartree-Fock-Bogoliubov model.

doi: 10.1103/PhysRevC.78.054302
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2008HI20      Int.J.Mod.Phys. E17, Supplement 1, 398 (2008)

J.G.Hirsch, I.Morales, J.Mendoza-Temis, A.Frank, J.C.Lopez-Vieyra, J.Barea, S.Pittel, P.van Isacker, V.Velazquez

The art of predicting nuclear masses

doi: 10.1142/S0218301308012014
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2008ME01      Nucl.Phys. A799, 84 (2008)

J.Mendoza-Temis, A.Frank, J.G.Hirsch, J.C.Lopez Vieyra, I.Morales, J.Barea, P.Van Isacker, V.Velazquez

Nuclear masses and the number of valence nucleons

ATOMIC MASSES A=1-293; analyzed atomic mass data with new empirical mass formula.

doi: 10.1016/j.nuclphysa.2007.11.010
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2008ME13      Nucl.Phys. A812, 28 (2008)

J.Mendoza-Temis, I.Morales, J.Barea, A.Frank, J.G.Hirsch, J.C.Lopez Vieyra, P.Van Isacker, V.Velazquez

Testing the predictive power of nuclear mass models

ATOMIC MASSES Z=8-108; A=16-256; analyzed masses using extrapolation with three mass models.

doi: 10.1016/j.nuclphysa.2008.08.008
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2007BA83      Eur.Phys.J. Special Topics 150, 189 (2007)

J.Barea, A.Frank, J.G.Hirsch, P.Van Isacker, V.Velazquez

Masses of atomic nuclei far from stability

doi: 10.1140/epjst/e2007-00301-x
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2007CI06      Phys.Rev. C 76, 024303 (2007)

O.Civitarese, J.G.Hirsch, A.Mariano, M.Reboiro

Testing approximations beyond the proton-neutron quasiparticle random phase approximation

doi: 10.1103/PhysRevC.76.024303
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2007SI25      Eur.Phys.J. A 33, 375 (2007)

S.Singh, R.Chandra, P.K.Rath, P.K.Raina, J.G.Hirsch

Nuclear deformation and the two-neutrino double-β decay in 124, 126Xe, 128, 130Te, 130, 132Ba and 150Nd isotopes

RADIOACTIVITY 128,130Te, 150Nd(β-β-); 124,126Xe, 130,132Ba(β+β+), (β+EC), (2EC); calculated decay rates and T1/2 using PHFB model. Compared results to available data.

NUCLEAR STRUCTURE 124,126,128,130Te, 124,126,128,130,132Xe, 130,132Ba, 150Nd, Sm; calculated level energies, J, π, B(E2), Quadrupole moments, and g-factors using the PHFB model. Compared results to avialable data.

doi: 10.1140/epja/i2007-10481-7
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2006GA25      Phys.Rev. C 74, 024324 (2006)

A.M.Garcia-Garcia, J.G.Hirsch, A.Frank

Semiclassical description of autocorrelations in nuclear masses

NUCLEAR STRUCTURE A=4-260; analyzed atomic masses, autocorrelations.

doi: 10.1103/PhysRevC.74.024324
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2006HI14      Phys.Scr. T125, 158 (2006)

J.G.Hirsch, V.Velazquez, A.Frank, J.Barea, P.Van Isacker, A.P.Zuker

An upper limit of ground-state energy fluctuations in nuclear masses

doi: 10.1088/0031-8949/2006/T125/036
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2006MO41      Int.J.Mod.Phys. E15, 1855 (2006)

I.Morales, A.Frank, J.C.Lopez-Vieyra, J.Barea, J.G.Hirsch, V.Velazquez, P.van Isacker

Predicting nuclear masses by image reconstruction

doi: 10.1142/S0218301306005228
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2006RA13      Eur.Phys.J. A 28, 27 (2006)

P.K.Raina, A.Shukla, S.Singh, P.K.Rath, J.G.Hirsch

The 0+ → 0+ positron double-β decay with emission of two neutrinos in the nuclei 96Ru, 102Pd, 106Cd and 108Cd

NUCLEAR STRUCTURE 96,102Ru, 96Mo, 102,106,108Pd, 106,108Cd; calculated levels, B(E2), quadrupole moments, g-factors. Projected Hartree-Fock-Bogoliubov model, comparison with data.

RADIOACTIVITY 96Ru, 102Pd, 106,108Cd(2β+); calculated 2νββ-, 2νβEC-, 2νECEC-decay T1/2, deformation effects. Projected Hartree-Fock-Bogoliubov model, comparison with data.

doi: 10.1140/epja/i2005-10280-2
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2005BA24      Phys.Rev.Lett. 94, 102501 (2005)

J.Barea, A.Frank, J.G.Hirsch, P.Van Isacker

Nuclear Masses Set Bounds on Quantum Chaos

doi: 10.1103/PhysRevLett.94.102501
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2005CH04      Eur.Phys.J. A 23, 223 (2005)

R.Chandra, J.Singh, P.K.Rath, P.K.Raina, J.G.Hirsch

Two-neutrino double-β decay of 94 ≤ A ≤ 110 nuclei for the 0+ → 0+ transition

NUCLEAR STRUCTURE 94,96Zr, 94,96,98,100Mo, 98,100,104Ru, 104,110Pd, 110Cd; calculated levels, J, π, B(E2), quadrupole moments, g-factors. Projected Hartree-Fock-Bogoliubov model, comparison with data.

RADIOACTIVITY 94,96Zr, 98,100Mo, 104Ru, 110Pd(2β-); calculated 2νββ-decay T1/2, deformation effects. Projected Hartree-Fock-Bogoliubov model, comparisons with data.

doi: 10.1140/epja/i2004-10087-7
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2005CI02      Phys.Rev. C 71, 14318 (2005)

O.Civitarese, M.Reboiro, J.G.Hirsch

Test of consistency of the so-called fully renormalized quasiparticle random phase approximation

doi: 10.1103/PhysRevC.71.014318
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2005HI22      Eur.Phys.J. A 25, Supplement 1, 75 (2005)

J.G.Hirsch, A.Frank, J.Barea, P.Van Isacker, V.Velazquez

Bounds on the presence of quantum chaos in nuclear masses

NUCLEAR STRUCTURE Z=8-120; A=16-280; analyzed atomic masses. Finite-range droplet model, comparison with data and other models.

doi: 10.1140/epjad/i2005-06-050-0
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2005SH02      Eur.Phys.J. A 23, 235 (2005)

A.Shukla, P.K.Raina, R.Chandra, P.K.Rath, J.G.Hirsch

Two-neutrino positron double-beta decay of 106Cd for the 0+ → 0+

NUCLEAR STRUCTURE 106Pd, 106Cd; calculated levels, J, π, B(E2), quadrupole moments, g-factors. Projected Hartree-Fock-Bogoliubov model, comparison with data.

RADIOACTIVITY 106Cd(2β+); calculated 2νββ-decay T1/2, deformation effects. Projected Hartree-Fock-Bogoliubov model, comparisons with data.

doi: 10.1140/epja/i2004-10084-x
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2004HI06      Phys.Rev. C 69, 037304 (2004)

J.G.Hirsch, A.Frank, V.Velazquez

Residual regularities in liquid drop mass calculations

NUCLEAR STRUCTURE A=16-263; analyzed masses; deduced residual correlations.

doi: 10.1103/PhysRevC.69.037304
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2004HI10      Phys.Lett. B 595, 231 (2004)

J.G.Hirsch, V.Velazquez, A.Frank

Quantum chaos and nuclear mass systematics

NUCLEAR STRUCTURE A=20-250; analyzed mass systematics, chaos-related features.

doi: 10.1016/j.physletb.2004.06.068
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2004VA30      Phys.Rev. C 70, 064320 (2004)

C.E.Vargas, J.G.Hirsch

Pushing the pseudo-SU(3) model towards its limits: Excited bands in even-even Dy isotopes

NUCLEAR STRUCTURE 158,160,162,164Dy; calculated levels, J, π, rotational bands, B(E2). Pseudo-SU(3) model, comparison with data.

doi: 10.1103/PhysRevC.70.064320
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2003DU03      Nucl.Phys. A714, 63 (2003)

J.Dukelsky, G.G.Dussel, J.G.Hirsch, P.Schuck

Comparison between exact and approximate treatments of the pairing interaction for finite Fermi systems

doi: 10.1016/S0375-9474(02)01361-1
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2003VA01      Phys.Lett. 551B, 98 (2003)

C.E.Vargas, J.G.Hirsch, J.P.Draayer

Microscopic description of the scissors mode in odd-mass heavy deformed nuclei

NUCLEAR STRUCTURE 157Gd, 163Dy, 169Tm; calculated B(M1) distributions, scissors mode features. Pseudo-SU(3) shell model, comparison with data.

doi: 10.1016/S0370-2693(02)03009-5
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2003VE01      Phys.Rev. C 67, 034311 (2003)

V.Velazquez, J.G.Hirsch, A.Frank, A.P.Zuker

A study of randomness, correlations, and collectivity in the nuclear shell model

NUCLEAR STRUCTURE 24Mg, 44Ti, 48Cr; calculated levels, J, π, B(E2), rotational bands. Comparison of random and collective behavior.

doi: 10.1103/PhysRevC.67.034311
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2002HI06      Phys.Lett. 534B, 57 (2002)

J.G.Hirsch, O.Castanos, P.O.Hess, O.Civitarese

Selection Rules in the ββ Decay of Deformed Nuclei

RADIOACTIVITY 154Sm, 160Gd, 170Er, 176Yb, 232Th, 244Pu(2β-); calculated 2ν- and 0ν-accompanied 2β-decay T1/2, deformation effects.

doi: 10.1016/S0370-2693(02)01593-9
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2002HI09      Czech.J.Phys. 52, 513 (2002)

J.G.Hirsch, O.Castanos, P.O.Hess, V.E.Ceron, O.Civitarese

Double-Beta Decay in Deformed Nuclei

RADIOACTIVITY 146,148,150Nd, 160Gd, 186W, 192Os, 238U(2β-); 156Dy, 162Er, 168Yb(2EC); calculated 0ν- and 2ν-accompanied 2β-decay T1/2. Pseudo-SU(3) model, deformed nuclei.

doi: 10.1023/A:1015357210178
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2002HI12      Phys.Rev. C66, 015502 (2002)

J.G.Hirsch, O.Castanos, P.O.Hess, O.Civitarese

Theoretical Description of Double β Decay of 160Gd

RADIOACTIVITY 160Gd(2β-); calculated 0ν- and 2ν-accompanied 2β decay matrix elements, T1/2. Pseudo-SU(3) model with pairing interaction.

doi: 10.1103/PhysRevC.66.015502
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2002HI13      Eur.Phys.J. A 14, 355 (2002)

J.G.Hirsch, P.O.Hess, O.Civitarese

The Use of Coherent States in the Variational Treatment of Proton-Neutron Interactions

doi: 10.1140/epja/i2002-10029-5
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2002HI24      Acta Phys.Hung.N.S. 16, 291 (2002)

J.G.Hirsch, G.Popa, C.E.Vargas, J.P.Draayer

Microscopic Description of Odd- and Even-Mass Er Isotopes

NUCLEAR STRUCTURE 164,165,166,167,168Er; calculated rotational bands levels, J, π, B(E2). Pseudo-SU(3) scheme, comparison with data.

doi: 10.1556/APH.16.2002.1-4.32
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2002VA02      Nucl.Phys. A697, 655 (2002)

C.E.Vargas, J.G.Hirsch, J.P.Draayer

Quasi-SU(3) Truncation Scheme for Odd-Even and Odd-Odd sd-Shell Nuclei

NUCLEAR STRUCTURE 21Ne, 22,23,24Na, 25Mg, 26,28Al; calculated levels, J, π, band structure, B(E2). Quasi-SU(3) symmetry, comparison with data.

doi: 10.1016/S0375-9474(01)01261-1
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2002VA27      Phys.Rev. C 66, 064309 (2002)

C.E.Vargas, J.G.Hirsch, J.P.Draayer

Excited bands in odd-mass rare-earth nuclei

NUCLEAR STRUCTURE 157Gd, 163Dy, 169Tm; calculated rotational bands energies, transitions B(E2); deduced pseudospin symmetry features. Pseudo-SU(3) model.

doi: 10.1103/PhysRevC.66.064309
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2001DR06      Acta Phys.Pol. B32, 2697 (2001)

J.P.Draayer, G.Popa, J.G.Hirsch

E2 and M1 Strengths in Heavy Deformed Nuclei

NUCLEAR STRUCTURE 160,162,164Dy, 168Er; calculated levels, B(E2), B(M1). Pseudo-SU(3) model, comparisons with data.


2001VA23      Nucl.Phys. A690, 409 (2001)

C.E.Vargas, J.G.Hirsch, J.P.Draayer

Quasi-SU(3) Truncation Scheme for Even-Even sd-Shell Nuclei

NUCLEAR STRUCTURE 20,22Ne, 24Mg, 28Si; calculated levels, J, π, B(E2). Quasi-SU(3) symmetry, truncated basis. Comparison with data, other models.

doi: 10.1016/S0375-9474(00)00708-9
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2001VA27      Phys.Rev. C64, 034306 (2001)

C.E.Vargas, J.G.Hirsch, J.P.Draayer

Interband B(E2) Transition Strengths in Odd-Mass Heavy Deformed Nuclei

NUCLEAR STRUCTURE 163Dy, 165Er; calculated interband transitions B(E2). Pseudo-SU(3) model, comparison with data.

doi: 10.1103/PhysRevC.64.034306
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2001VE04      Nucl.Phys. A686, 129 (2001)

V.Velazquez, J.G.Hirsch, Y.Sun

Band Crossing and Signature Splitting in Odd Mass fp Shell Nuclei

NUCLEAR STRUCTURE 47,49V, 47,49Cr, 49,51Mn; calculated levels, J, π, rotational bands features. Projected shell model, comparisons with data.

doi: 10.1016/S0375-9474(00)00507-8
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2000BE16      Phys.Rev. C61, 054307 (2000)

T.Beuschel, J.G.Hirsch, J.P.Draayer

Scissors Mode and the Pseudo-SU(3) Model

NUCLEAR STRUCTURE 156,158,160Gd, 196Pt; calculated B(M1) strength distributions; deduced scissors mode related features. Pseudo-SU(3) model, comparisons with data.

doi: 10.1103/PhysRevC.61.054307
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2000CI03      Phys.Rev. C61, 064303 (2000)

O.Civitarese, P.O.Hess, J.G.Hirsch, M.Reboiro

Fermion and Boson Condensates in a QCD-Inspired Model Hamiltonian

doi: 10.1103/PhysRevC.61.064303
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2000CI06      Phys.Rev. C62, 054318 (2000)

O.Civitarese, J.G.Hirsch, F.Montani, M.Reboiro

Extended Quasiparticle Random Phase Approximation at Finite Temperatures: Calculation of single β-decay Fermi transitions

RADIOACTIVITY 76Ge(β-); calculated Fermi transitions sum rule, strength distributions, temperature effects. Extended quasiparticle RPA.

doi: 10.1103/PhysRevC.62.054318
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2000DU04      Eur.Phys.J. A 7, 155 (2000)

J.Dukelsky, J.G.Hirsch, P.Schuck

Occupation Numbers in Self Consistent RPA

doi: 10.1007/s100500050376
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2000MA29      Phys.Rev. C61, 054301 (2000)

A.Mariano, J.G.Hirsch

Limitations of the Number Self-Consistent Random Phase Approximation

NUCLEAR STRUCTURE 76As; calculated energy levels, occupation numbers, pairing gap vs residual interaction parameter; deduced role of proton-neutron interaction. Self-consistent renormalized quasiparticle RPA.

doi: 10.1103/PhysRevC.61.054301
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2000PO30      Phys.Rev. C62, 064313 (2000)

G.Popa, J.G.Hirsch, J.P.Draayer

Shell Model Description of Normal Parity Bands in Even-Even Heavy Deformed Nuclei

NUCLEAR STRUCTURE 156,158,160Gd; calculated levels, J, π, B(M1), B(E2) strength distributions. Pseudo-SU(3) model, comparisons with data.

doi: 10.1103/PhysRevC.62.064313
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2000SU13      Phys.Rev. C61, 064323 (2000)

Y.Sun, K.Hara, J.A.Sheikh, J.G.Hirsch, V.Velazquez, M.Guidry

Multiphonon γ-Vibrational Bands and the Triaxial Projected Shell Model

NUCLEAR STRUCTURE 156,158,160,162,164,166,168,170Er; calculated ground, γ-vibrational bands energy and spin, multiphonon bands properties. Triaxial projected shell model, unified treatment.

doi: 10.1103/PhysRevC.61.064323
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2000VA03      Phys.Rev. C61, 031301 (2000)

C.Vargas, J.G.Hirsch, T.Beuschel, J.P.Draayer

Shell Model Description of Normal Parity Bands in Odd-Mass Heavy Deformed Nuclei

NUCLEAR STRUCTURE 159Eu, 159Tb, 159Dy; calculated levels, J, π, B(E2). Shell model, pseudo-SU(3) symmetry, comparison with data.

doi: 10.1103/PhysRevC.61.031301
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2000VA11      Nucl.Phys. A673, 219 (2000)

C.E.Vargas, J.G.Hirsch, J.P.Draayer

Pseudo SU(3) Shell Model: Normal parity bands in odd-mass nuclei

NUCLEAR STRUCTURE 159Tb; calculated rotational bands levels, J, π, B(E2). Pseudo SU(3) model, comparisons with data.

doi: 10.1016/S0375-9474(00)00153-6
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1999CE12      Phys.Lett. 471B, 1 (1999)

V.E.Ceron, J.G.Hirsch

Double Electron Capture in 156Dy, 162Er and 168Yb

RADIOACTIVITY 156Dy, 162Er, 168Yb(2EC); calculated 2ν accompanied two-ec-decay T1/2. Pseudo SU(3) model.

doi: 10.1016/S0370-2693(99)01317-9
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1999CI01      Phys.Rev. C59, 194 (1999)

O.Civitarese, P.O.Hess, J.G.Hirsch, M.Reboiro

Spontaneous and Dynamical Breaking of Mean Field Symmetries in the Proton-Neutron Quasiparticle Random Phase Approximation and the Description of Double β Decay Transitions

NUCLEAR STRUCTURE 76Ge; calculated 2ν-accompanied 2β-decay matrix elements. Isospin symmetry breaking.

doi: 10.1103/PhysRevC.59.194
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1999DR07      J.Phys.(London) G25, 605 (1999)

J.P.Draayer, T.Beuschel, J.G.Hirsch

M1 Strengths in Deformed Nuclei

NUCLEAR STRUCTURE 156,158,160Gd, 196Pt, 163Dy; calculated levels, J, π, B(M1) distributions; deduced non-collective effects. Shell model, Elliot SU3. Comparison with data.

doi: 10.1088/0954-3899/25/4/006
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1999HI04      Phys.Rev. C60, 024309 (1999)

J.G.Hirsch, O.Civitarese, M.Reboiro

Comparison between Wave Functions in the Random Phase Approximation, Renormalized Random phase Approximation, and Self-Consistent Random Phase Approximation Methods

doi: 10.1103/PhysRevC.60.024309
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1999HI09      Phys.Rev. C60, 064303 (1999)

J.G.Hirsch, P.O.Hess, O.Civitarese

Boson Expansion Techniques, the Pauli Principle, and the Quasiparticle Random Phase Approximation Phase Transition

doi: 10.1103/PhysRevC.60.064303
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1999VA09      J.Phys.(London) G25, 881 (1999)

C.Vargas, J.G.Hirsch, P.O.Hess, J.P.Draayer

SU(3) Description of the Spin-Orbit Interaction

doi: 10.1088/0954-3899/25/4/060
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1999VE05      J.Phys.(London) G25, 787 (1999)

V.Velazquez, J.G.Hirsch, Y.Sun

The Projected Shell Model

NUCLEAR STRUCTURE 160Dy; calculated rotational band features; deduced residual interaction, deformation effects. Projected shell model. Comparison with data.

doi: 10.1088/0954-3899/25/4/037
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1999VE06      Nucl.Phys. A653, 355 (1999)

V.Velazquez, J.G.Hirsch, Y.Sun, M.W.Guidry

Backbending in Dy Isotopes within the Projected Shell Model

NUCLEAR STRUCTURE 154,156,158,160,162,164Dy; calculated rotational bands quadrupole moments, B(E2), g-factors; deduced deformation. Projected shell model, comparisons with data.

doi: 10.1016/S0375-9474(99)00238-9
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1998BE08      Phys.Rev. C57, 1233 (1998)

T.Beuschel, J.P.Draayer, D.Rompf, J.G.Hirsch

Microscopic Description of the Scissors Mode and Its Fragmentation

NUCLEAR STRUCTURE 156,158,160Gd, 160,162,164Dy; calculated levels, J, π, M1 strength distributions. Microscopic pseudo-SU(3) shell model.

doi: 10.1103/PhysRevC.57.1233
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1998DR12      Yad.Fiz. 61, 1749 (1998); Phys.Atomic Nuclei 61, 1631 (1998)

J.P.Draayer, T.Beuschel, D.Rompf, J.G.Hirsch

Fragmentation of the Scissors Mode in Deformed Nuclei

NUCLEAR STRUCTURE 156,158,160Gd, 160,162,164Dy; calculated levels, J, π, B(M1) distributions; deduced parameters. Scissors mode, proton-neutron pseudo-SU(3) model.


1998MA30      Phys.Rev. C57, 3015 (1998)

A.Mariano, J.G.Hirsch

Particle Number Fluctuations in the Quasiparticle Random-Phase Approximation and Renormalized Quasiparticle Random-Phase Approximation

doi: 10.1103/PhysRevC.57.3015
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1998MA72      Phys.Rev. C58, 2736 (1998)

A.Mariano, J.G.Hirsch

Like Particles Vs Proton-Neutron Pairs: Phase transitions in realistic model spaces

NUCLEAR STRUCTURE 76Ge; calculated particle-number, pair-number fluctuations, double beta decay matrix elements with residual pn interaction. Quasiparticle RPA.

doi: 10.1103/PhysRevC.58.2736
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1998RO09      Phys.Rev. C57, 1703 (1998)

D.Rompf, T.Beuschel, J.P.Draayer, W.Scheid, J.G.Hirsch

Towards Understanding Magnetic Dipole Excitations in Deformed Nuclei: Phenomenology

doi: 10.1103/PhysRevC.57.1703
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1998VA17      Phys.Rev. C58, 1488 (1998)

C.Vargas, J.G.Hirsch, P.O.Hess, J.P.Draayer

Interplay between the Quadrupole-Quadrupole and Spin-Orbit Interactios in Nuclei

NUCLEAR STRUCTURE 20,22Ne, 44Ti; calculated wavefunctions, eigenvalues; deduced Hilbert space truncation. SU(3) shell model.

doi: 10.1103/PhysRevC.58.1488
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1998VE07      Nucl.Phys. A643, 39 (1998)

V.Velazquez, J.G.Hirsch, Y.Sun

Self-Consistency in the Projected Shell Model

NUCLEAR STRUCTURE 160Dy; calculated levels, J, π, rotational band features; deduced residual interaction contributions, deformation effects. Projected shell model.

doi: 10.1016/S0375-9474(98)00549-1
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1997AG02      Phys.Rev. C55, 1571 (1997)

V.V.Aguilar, P.O.Hess, J.G.Hirsch, A.E.Mariano

Testing Basic Assumptions of the Pseudosymplectic Model

NUCLEAR STRUCTURE 160Dy, 168Er, 234,236,238U; calculated protons partition into normal, unique orbitals, scale factors for B(E2) transitions; deduced pseudosymplectic model assumptions validity.

doi: 10.1103/PhysRevC.55.1571
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1997CI09      Phys.Lett. 412B, 1 (1997)

O.Civitarese, P.O.Hess, J.G.Hirsch

The Collapse of the pn-QRPA as a Signal of Phase-Instabilities

doi: 10.1016/S0370-2693(97)01060-5
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1997HI02      Phys.Lett. 390B, 36 (1997)

J.G.Hirsch, P.O.Hess, O.Civitarese

Double Beta Decay and the Proton-Neutron Residual Interaction

doi: 10.1016/S0370-2693(96)01511-0
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1997HI05      Phys.Rev. C56, 199 (1997)

J.G.Hirsch, P.O.Hess, O.Civitarese

Single- and Double-Beta Decay Fermi Transitions in an Exactly Solvable Model

doi: 10.1103/PhysRevC.56.199
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1996HI11      Phys.Rev. C54, 1976 (1996)

J.G.Hirsch, P.O.Hess, O.Civitarese

Renormalized Quasiparticle Random Phase Approximation and Double Beta Decay: A critical analysis of double Fermi transitions

doi: 10.1103/PhysRevC.54.1976
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1996TR06      Nucl.Phys. A601, 89 (1996)

D.Troltenier, J.P.Draayer, J.G.Hirsch

Correlations between the Quadrupole Deformation, B(E2; 01 → 21) Value, and Total GT(+) Strength

NUCLEAR STRUCTURE 20Ne; calculated levels, B(λ), Gamow-Teller transition strength. Deformed nucleus, SU(3) shell model.

doi: 10.1016/0375-9474(96)00092-9
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1995HI01      Nucl.Phys. A582, 124 (1995)

J.G.Hirsch, O.Castanos, P.O.Hess

Neutrinoless Double Beta Decay in Heavy Deformed Nuclei

RADIOACTIVITY 150,148,146Nd, 186W, 192Os, 238U(2β); calculated 0ν-accompanied 2β-decay T1/2, matrix element. Pseudo-SU(3) model.

doi: 10.1016/0375-9474(94)00464-X
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1995HI04      Phys.Rev. C51, 2252 (1995)

J.G.Hirsch, O.Castanos, P.O.Hess, O.Civitarese

Double-Beta Decay of 100Mo: The deformed limit

RADIOACTIVITY 100Mo(2β); calculated 2ν-accompanied 2β-decay matrix elements. Pseudo-SU(3) scheme.

doi: 10.1103/PhysRevC.51.2252
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1995HI11      Nucl.Phys. A589, 445 (1995)

J.G.Hirsch, O.Castanos, P.O.Hess, O.Civitarese

Double-Beta Decay to Excited States in 150Nd

NUCLEAR STRUCTURE 150Sm; calculated levels, B(λ). Pseudo SU(3) model.

RADIOACTIVITY 150Nd(2β); calculated 2ν-accompanied 2β-decay T1/2, Gamow-Teller matrix elements. Pseudo SU(3) model.

doi: 10.1016/0375-9474(95)00090-N
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1994CA10      Nucl.Phys. A571, 276 (1994)

O.Castanos, J.G.Hirsch, O.Civitarese, P.O.Hess

Double-Beta Decay in the Pseudo SU(3) Scheme

RADIOACTIVITY 146,148,150Nd, 186W, 192Os, 238U(2β); calculated 2ν-accompanied 2β-decay T1/2. Pseudo SU(3) scheme.

doi: 10.1016/0375-9474(94)90062-0
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