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NSR database version of May 24, 2024.

Search: Author = J.Retamosa

Found 29 matches.

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2012MU15      J.Phys.:Conf.Ser. 381, 012031 (2012)

L.Munoz, C.Fernandez-Ramirez, A.Relano, J.Retamosa

Chaos in hadrons

doi: 10.1088/1742-6596/381/1/012031
Citations: PlumX Metrics


2005MO19      Phys.Rev. C 71, 064317 (2005)

R.A.Molina, A.P.Zuker, A.Relano, J.Retamosa

Spectral statistics of Hamiltonian matrices in tridiagonal form

doi: 10.1103/PhysRevC.71.064317
Citations: PlumX Metrics


2004GO30      Phys.Rev. C 69, 057302 (2004)

J.M.G.Gomez, K.Kar, V.K.B.Kota, R.A.Molina, J.Retamosa

Number of principal components and localization length in E2 and M1 transition strengths in 46V

NUCLEAR STRUCTURE 46V; calculated E2 and M1 transition strengths, number of principal components. Embedded Gaussian orthogonal random matrix ensemble.

doi: 10.1103/PhysRevC.69.057302
Citations: PlumX Metrics


2003GO16      Phys.Lett. B 567, 251 (2003)

J.M.G.Gomez, K.Kar, V.K.B.Kota, R.A.Molina, J.Retamosa

Localization in 2p1f nuclear shell-model wavefunctions

NUCLEAR STRUCTURE 48,50,52Ca, 46,48,50Sc, 46Ti; calculated localization lengths for shell-model wavefunctions; deduced isospin dependence in onset of nuclear chaos. Embedded Gaussian orthogonal ensemble.

doi: 10.1016/j.physletb.2003.06.041
Citations: PlumX Metrics


2001GO37      Phys.Rev. C64, 034305 (2001)

J.M.G.Gomez, K.Kar, V.K.B.Kota, J.Retamosa, R.Sahu

Transition Strengths and Quantum Chaos in Large Shell-Model Spaces

NUCLEAR STRUCTURE 36Ne, 36Na, 36Mg, 46Ti, 48,52Sc; calculated E2, M1, and Gamow-Teller transition strength sums vs excitation energy. Shell model, comparison with embedded Gaussian orthogonal ensemble predictions.

doi: 10.1103/PhysRevC.64.034305
Citations: PlumX Metrics


2001MO01      Phys.Rev. C63, 014311 (2001)

R.A.Molina, J.M.G.Gomez, J.Retamosa

Energy and Isospin Dependence of Nuclear Chaos

NUCLEAR STRUCTURE 46,48,50,52Ca, 46,48,50,52Sc, 46Ti; calculated level spacing distributions; deduced isospin dependence for nuclear chaoticity. Shell model.

doi: 10.1103/PhysRevC.63.014311
Citations: PlumX Metrics


2000GO14      Phys.Lett. 480B, 245 (2000)

J.M.G.Gomez, K.Kar, V.R.Manfredi, R.A.Molina, J.Retamosa

Statistical Theory versus Shell Model in a Large pf Configuration Space

NUCLEAR STRUCTURE 46V, 50Sc; calculated transition strength distributions. Comparison of shell model, statistical model.

doi: 10.1016/S0370-2693(00)00414-7
Citations: PlumX Metrics


1999CA12      Phys.Rev. C59, 2033 (1999)

E.Caurier, G.Martinez-Pinedo, F.Nowacki, A.Poves, J.Retamosa, A.P.Zuker

Full 0(h-bar)ω Shell Model Calculation of the Binding Energies of the 1f7/2 Nuclei

NUCLEAR STRUCTURE 42,43,44,45,46,47,48Ca, 42,43,44,45,46,47,48,49Sc, 42,43,44,45,46,47,48,49,50Ti, 43,44,45,46,47,48,49,50,51V, 44,45,46,47,48,49,50,51,52Cr, 45,46,47,48,49,50,51Mn, 46,47,48,49,50,51,52,54Fe, 48,49,50,51,54Co, 50,51,52,54,56Ni; calculated binding energies, M1, E2, Gamow-Teller sum rules. Shell model, quasispin formalism.

doi: 10.1103/PhysRevC.59.2033
Citations: PlumX Metrics


1999CA60      Nucl.Phys. (Supplement) A654, 747c (1999)

E.Caurier, F.Nowacki, A.P.Zuker, G.Martinez-Pinedo, A.Poves, J.Retamosa

Large Scale Diagonalizations in the pf Shell: Achievements and perspectives

NUCLEAR STRUCTURE 48,50Cr; calculated levels, J, π. Shell model, comparison with data and with Hartree-Fock-Bogolyubov results. 58,60Ni; calculated level densities vs excitation energy. Shell model, comparison with data.

doi: 10.1016/S0375-9474(00)88541-3
Citations: PlumX Metrics


1999CA62      Nucl.Phys. (Supplement) A654, 973c (1999)

E.Caurier, F.Nowacki, A.Poves, J.Retamosa

Shell Model Study of the Neutrinoless Double Beta Decays

RADIOACTIVITY 48Ca, 76Ge, 82Se, 124Sn, 128,130Te, 136Xe(2β-); calculated 2ν-accompanied 2β-decay T1/2, 0ν-accomanied 2β-decay matrix elements. Large-scale shell model calculations.

doi: 10.1016/S0375-9474(00)88583-8
Citations: PlumX Metrics


1999KO48      Phys.Rev. C60, 051306 (1999)

V.K.B.Kota, R.Sahu, K.Kar, J.M.G.Gomez, J.Retamosa

Transition Strength Sums and Quantum Chaos

doi: 10.1103/PhysRevC.60.051306
Citations: PlumX Metrics


1998CA40      Phys.Rev. C58, 2033 (1998)

E.Caurier, F.Nowacki, A.Poves, J.Retamosa

Shell Model Study of the Neutron Rich Isotopes from Oxygen to Silicon

NUCLEAR STRUCTURE Z=8-13; calculated neutron-rich nuclei 2+ levels, B(E2), one-, two-neutron separation energies, intruder states features. Shell model calculations.

doi: 10.1103/PhysRevC.58.2033
Citations: PlumX Metrics


1998VO12      Phys.Lett. 443B, 1 (1998)

P.von Neumann-Cosel, A.Poves, J.Retamosa, A.Richter

Magnetic Dipole Response in Nuclei at the N = 28 Shell Closure: A new look

NUCLEAR STRUCTURE 48Ca, 50Ti, 52Cr, 54Fe; calculated magnetic dipole response, B(M1) distributions; deduced spin quenching factors. Shell-model calculations.

doi: 10.1016/S0370-2693(98)01298-2
Citations: PlumX Metrics


1997RE04      Phys.Rev. C55, 1266 (1997)

J.Retamosa, E.Caurier, F.Nowacki, A.Poves

Shell Model Study of the Neutron-Rich Nuclei Around N = 28

NUCLEAR STRUCTURE 40,41,42K, 42,39,40,41Ar, 38Cl; calculated levels. 44,46Ar, 38,40,42,44S; calculated total Gamow-Teller strength, B(λ) in some cases, β-decay T1/2. Z=14-20; N=16-30; calculated two-neutron separation energies. 40,42S deduced deformation β. 36,38,40,42,44Si, 38,40,42,44,46S, 40,42,44,46,48Ar, 42,44,46,48,50Ca, 44,46,48,50,52Ti, 46,48,50,52,54Cr; calculated 2+ levels. Shell model.

doi: 10.1103/PhysRevC.55.1266
Citations: PlumX Metrics


1996CA35      Phys.Rev.Lett. 77, 1954 (1996)

E.Caurier, F.Nowacki, A.Poves, J.Retamosa

Shell Model Studies of the Double Beta Decays of 76Ge, 82Se, and 136Xe

RADIOACTIVITY 76Ge, 82Se, 136Xe(2β); calculated 0ν-accompanied 2β-decay T1/2 lower limits. Large shell model space.

doi: 10.1103/PhysRevLett.77.1954
Citations: PlumX Metrics


1996MA56      Phys.Rev. C54, R2150 (1996)

G.Martinez-Pinedo, A.Poves, L.M.Robledo, E.Caurier, F.Nowacki, J.Retamosa, A.Zuker

Backbending in 50Cr

NUCLEAR STRUCTURE 50Cr; analyzed collective yrast, high-spin states; deduced backbending features. Spherical shell model, cranked HFB method.

doi: 10.1103/PhysRevC.54.R2150
Citations: PlumX Metrics


1996RA21      Phys.Rev.Lett. 76, 2642 (1996)

P.B.Radha, D.J.Dean, S.E.Koonin, T.T.S.Kuo, K.Langanke, A.Poves, J.Retamosa, P.Vogel

Shell Model Monte Carlo Method for Two-Neutrino Double Beta Decay

NUCLEAR STRUCTURE 48Ca, 76Ge(2β); calculated 2ν-accompanied 2β-decay matrix element vs temperature. Shell model Monte Carlo techniques.

doi: 10.1103/PhysRevLett.76.2642
Citations: PlumX Metrics


1995CA33      Phys.Rev.Lett. 75, 2466 (1995)

E.Caurier, J.L.Egido, G.Martinez-Pinedo, A.Poves, J.Retamosa, L.M.Robledo, A.P.Zuker

Intrinsic vs Laboratory Frame Description of the Deformed Nucleus 48Cr

NUCLEAR STRUCTURE 48Cr; calculated levels, g vs spin, B(E2), intrinsic quadrupole moment. Spherical shell model, HFB method.

doi: 10.1103/PhysRevLett.75.2466
Citations: PlumX Metrics


1995RE01      Phys.Rev. C51, 371 (1995)

J.Retamosa, E.Caurier, F.Nowacki

Neutrinoless Double Beta Decay of 48Ca

RADIOACTIVITY 48Ca(2β); calculated 0ν-accompanied 2β-decay T1/2. Shell model, recoil terms in hadronic currents.

doi: 10.1103/PhysRevC.51.371
Citations: PlumX Metrics


1995ZU02      Phys.Rev. C52, R1741 (1995)

A.P.Zuker, J.Retamosa, A.Poves, E.Caurier

Spherical Shell Model Description of Rotational Motion

NUCLEAR STRUCTURE 152,154,156,158Nd, 154,156,158,160Sm, 156,158,160,162Gd, 158,160,162,164Dy; calculated B(E2). Spherical shell model.

doi: 10.1103/PhysRevC.52.R1741
Citations: PlumX Metrics


1994PO05      Nucl.Phys. A571, 221 (1994)

A.Poves, J.Retamosa

Theoretical Study of the Very Neutron-Rich Nuclei Around N = 20

NUCLEAR STRUCTURE 28O, 34Si, 30Ne, 32Mg; calculated intruder levels, B(λ), quadrupole moments. 27,28,29,30O, 28,29,30,31F, 29,30,31,32Ne, 30,31,32,33Na, 31,32,33,34Mg, 32,33,34,35Al, 33,34,35,36Si; calculated levels, binding energies. Shell model.

doi: 10.1016/0375-9474(94)90058-2
Citations: PlumX Metrics


1994PO34      Z.Phys. A347, 227 (1994)

A.Poves, J.Retamosa, M.J.G.Borge, O.Tengblad

Halo Signals in the Beta Decay of 28O

RADIOACTIVITY 28O(β-); calculated Gamow-Teller β-decay strength function. Shell model.

doi: 10.1007/BF01289788
Citations: PlumX Metrics


1993KL02      Phys.Rev. C47, 2502 (1993)

G.Klotz, P.Baumann, M.Bounajma, A.Huck, A.Knipper, G.Walter, G.Marguier, C.Richard-Serre, A.Poves, J.Retamosa

Beta Decay of 31,32Na and 31Mg: Study of the N = 20 shell closure

RADIOACTIVITY 31,32Na, 31Mg(β-n) [from U(p, X), E=600 MeV]; measured Eγ, Iγ, γγ-, nγ-coin, Iβ; deduced log ft. 31,32Mg, 31Al deduced levels, J, π. 32Al deduced γ-cascade evidence.

doi: 10.1103/PhysRevC.47.2502
Citations: PlumX Metrics


1992TE03      Z.Phys. A342, 303 (1992)

O.Tengblad, M.J.G.Borge, L.Johannsen, B.Jonson, M.Lindroos, T.Nilsson, G.Nyman, A.Poves, H.L.Ravn, J.Retamosa, K.Riisager, P.Sona, K.Wilhelmsen, and the ISOLDE Collaboration

Study of Neutron Rich Neon Isotopes

RADIOACTIVITY 26,27,28,29Ne(β-n) [from Th(3He, X), E=910 MeV]; measured Iβ, T1/2, neutron emission probabilities. Shell model analysis.

doi: 10.1007/BF01291514
Citations: PlumX Metrics


1991DU05      Phys.Rev. C44, 2872 (1991)

J.Dukelsky, A.Poves, J.Retamosa

Phase Transitions in Light Nuclei

NUCLEAR STRUCTURE 20Ne; calculated intrinsic quadrupole moment expectation value, specific heat vs temperature; deduced phase transition features. SU(3) Elliott model.

doi: 10.1103/PhysRevC.44.2872
Citations: PlumX Metrics


1990RE06      Nucl.Phys. A511, 221 (1990)

J.Retamosa, J.M.Udias, A.Poves, E.Moya de Guerra

1+ Excitations in Light Nuclei: SU(3) versus realistic shell model results

NUCLEAR STRUCTURE 20,22Ne, 24Mg, 44Ti; calculated levels, B(λ), form factor. Shell model.

doi: 10.1016/0375-9474(90)90157-H
Citations: PlumX Metrics


1989BA50      Phys.Lett. 228B, 458 (1989)

P.Baumann, A.Huck, G.Klotz, A.Knipper, G.Walter, G.Marguier, H.L.Ravn, C.Richard-Serre, A.Poves, J.Retamosa

34Si: A new doubly magic nucleus ( Question )

RADIOACTIVITY 34Al(β-) [from U(p, X), E=600 MeV]; measured βγγ-coin, Eγ, Iγ; deduced log ft, neutron emission probability. 34Al level deduced J, π. 34Si deduced levels, J, π, γ-branching ratios.

doi: 10.1016/0370-2693(89)90974-X
Citations: PlumX Metrics


1989PO04      Phys.Rev. C39, 1639 (1989)

A.Poves, J.Retamosa, E.Moya de Guerra

Shell-Model Realization of the Scissors Mode

NUCLEAR STRUCTURE 20Ne; calculated levels, B(M1), quadrupole moment ratio. Realistic shell model, SU(3) limit.

doi: 10.1103/PhysRevC.39.1639
Citations: PlumX Metrics


1987PO01      Phys.Lett. 184B, 311 (1987)

A.Poves, J.Retamosa

The Onset of Deformation at the N = 20 Neutron Shell Closure far from Stability

NUCLEAR STRUCTURE 20,21O, 20,21F, 18,19,20,21,22Ne, 18,19,20,21,22Na, 18,19,20,21,22Mg, 20,21Al, 20,21Si; calculated ground state spins, percentages, centroid, correlation energies; 30Ne, 32Mg; calculated yrast states energies, J, π, B(E2); Na, Mg; calculated binding energies; 31Na, 32Mg; calculated levels, J, π; deduced deformation onset mass dependence. Shell model.

doi: 10.1016/0370-2693(87)90171-7
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