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NSR database version of April 11, 2024.

Search: Author = T.R.Rodriguez

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2024BA06      Eur.Phys.J. A 60, (2024)

B.Bally, T.R.Rodriguez

Symmetry-projected variational calculations with the numerical suite TAURUS

NUCLEAR STRUCTURE 24Mg; calculated projected energy surface, energy levels, J, π, rms radii, nuclear magnetic and quadrupole moments, B(E2) using the numerical codes TAURUSpav and TAURUSmix.

doi: 10.1140/epja/s10050-024-01271-0
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2024IL01      Phys.Lett. B 848, 138371 (2024)

A.Illana, R.M.Perez-Vidal, D.Stramaccioni, J.J.Valiente-Dobon, T.R.Rodriguez, L.M.Robledo, A.Poves, K.Auranen, O.Beliuskina, C.Delafosse, T.Eronen, Z.Ge, S.Geldhof, W.Gins, T.Grahn, P.T.Greenlees, H.Joukainen, R.Julin, H.Jutila, A.Kankainen, M.Leino, J.Louko, M.Luoma, D.Nesterenko, J.Ojala, J.Pakarinen, P.Rahkila, P.Ruotsalainen, M.Sandzelius, J.Saren, J.Uusitalo, G.L.Zimba

Octupole correlations in the N = Z + 2 = 56 110Xe nucleus

NUCLEAR REACTIONS 54Fe(58Ni, 2n)110Xe, E=255 MeV; measured reaction products, Eγ, Iγ, Eα, Iα; deduced γ-ray energies and intensities, J, π, an octupole band . Comparison with systematics, theoretical calculations using the symmetry-conserving configuration-mixing method, based on a Gogny energy density functional. The Recoil-Decay Tagging (RDT) technique, the Mass Analysing Recoil Apparatus (MARA) vacuum mode-recoil separator, the K130 cyclotron at the Accelerator Laboratory of the University of Jyvaskylaa (JYFL), Finland.

doi: 10.1016/j.physletb.2023.138371
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2023EL04      Phys.Lett. B 844, 138072 (2023)

Z.Elekes, V.Panin, T.R.Rodriguez, K.Sieja, D.S.Ahn, A.Al-Adili, H.Baba, A.I.Stefanescu, K.J.Cook, Cs.Dosa, N.Fukuda, J.Gao, J.Gibelin, K.I.Hahn, Z.Halasz, S.W.Huang, T.Isobe, M.M.Juhasz, D.Kim, T.Kobayashi, Y.Kondo, Z.Korkulu, A.Kurihara, I.Kuti, H.Miki, K.Miki, T.Motobayashi, H.Otsu, A.Saastamoinen, M.Sasano, H.Sato, T.Shimada, Y.Shimizu, L.G.Sobotka, I.Stefanescu, L.Stuhl, H.Suzuki, H.Takeda, Y.Togano, T.Tomai, L.Trache, D.Tudor, T.Uesaka, Y.Utsuki, H.Wang, A.Yasuda, K.Yoneda, Y.Yoshitome

Shape coexistence in 66Se

NUCLEAR REACTIONS 12C(67Se, n)66Se, E=170-250 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and relative intensities, γ-ray production σ, J, π, partial level scheme, shape coexistence. Comparison with theoretical calculations. The CATANA array, Radioactive Isotope Beam Factory operated by the RIKEN Nishina Center and by the Center for Nuclear Study of the University of Tokyo.

doi: 10.1016/j.physletb.2023.138072
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2023MA37      Phys.Lett. B 844, 138067 (2023)

N.Marchini, A.Nannini, M.Rocchini, T.R.Rodriguez, M.Ottanelli, N.Gelli, A.Perego, G.Benzoni, N.Blasi, G.Bocchi, D.Brugnara, A.Buccola, G.Carozzi, A.Goasduff, E.T.Gregor, P.R.John, M.Komorowska, D.Mengoni, F.Recchia, S.Riccetto, D.Rosso, A.Saltarelli, M.Siciliano, J.J.Valiente-Dobon, I.Zanon

Emergence of triaxiality in 74Se from electric monopole transition strengths

RADIOACTIVITY 74Br(β+) [from 60Ni(16O, np), E=45 MeV]; measured decay products, Eβ, Iβ; deduced conversion electrons, K-internal conversion coefficients, monopole transition strength, triaxiality and a complex shape-coexistence and mixing scenario. Comparison with theoretical calculations, BRICC. The Tandem-XTU accelerator at the INFN Legnaro National Laboratory (LNL).

doi: 10.1016/j.physletb.2023.138067
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2023PA40      Eur.Phys.J. A 59, 276 (2023)

G.Pasqualato, S.Ansari, J.S.Heines, V.Modamio, A.Gorgen, W.Korten, J.Ljungvall, E.Clement, J.Dudouet, A.Lemasson, T.R.Rodriguez, J.M.Allmond, T.Arici, K.S.Beckmann, A.M.Bruce, D.Doherty, A.Esmaylzadeh, E.R.Gamba, L.Gerhard, J.Gerl, G.Georgiev, D.P.Ivanova, J.Jolie, Y.-H.Kim, L.Knafla, A.Korichi, P.Koseoglou, M.Labiche, S.Lalkovski, T.Lauritsen, H.-J.Li, L.G.Pedersen, S.Pietri, D.Ralet, J.M.Regis, M.Rudigier, S.Saha, E.Sahin, S.Siem, P.Singh, P.-A.Soderstrom, C.Theisen, T.Tornyi, M.Vandebrouck, W.Witt, M.Zielinska, D.Barrientos, P.Bednarczyk, G.Benzoni, A.J.Boston, H.C.Boston, A.Bracco, B.Cederwall, M.Ciemala, G.de France, C.Domingo-Pardo, J.Eberth, A.Gadea, V.Gonzalez, A.Gottardo, L.J.Harkness-Brennan, H.Hess, D.S.Judson, A.Jungclaus, S.M.Lenzi, S.Leoni, R.Menegazzo, D.Mengoni, C.Michelagnoli, D.R.Napoli, J.Nyberg, Zs.Podolyak, A.Pullia, F.Recchia, P.Reiter, K.Rezynkina, M.D.Salsac, E.Sanchis, M.Senyigit, M.Siciliano, J.Simpson, D.Sohler, O.Stezowski, J.J.Valiente-Dobon, D.Verney

Shape evolution in even-mass 98-104Zr isotopes via lifetime measurements using the γγ coincidence technique

NUCLEAR REACTIONS 9Be(238U, X)98Zr/100Zr/102Zr/104Zr, E=6.2 MeV/nucleon; measured reaction products, Eγ, Iγ, γ-γ-coin. 104Mo, 102Nb; deduced γ-ray energies and relative intensities, J, π, level T1/2, B(E2), shape coexistence. Comparison with calculated values. The Differential Decay Curve Method (DDCM), the Recoil Distance Doppler Shift technique. The magnetic spectrometer VAMOS++, GANIL, the Orsay Universal Plunger system.

doi: 10.1140/epja/s10050-023-01172-8
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2023ZH07      Phys.Rev. C 107, 024304 (2023)

X.Zhang, W.Lin, J.M.Yao, C.F.Jiao, A.M.Romero, T.R.Rodriguez, H.Hergert

Optimization of the generator coordinate method with machine-learning techniques for nuclear spectra and neutrinoless double-β decay: Ridge regression for nuclei with axial deformation

RADIOACTIVITY 76Ge(2β-);calculated 0νββ-decay nuclear matrix elements (NME) for the decay between ground states of 76Ge and 76Se. Statistical machine-learning (ML) algorithms applied with generator coordinate method (GCM), orthogonality condition, polinomial ridge regression and energy-transition orthogonality procedure.

NUCLEAR STRUCTURE 76Ge, 76Se; calculated low-lying levels, J, π. Subspace-reduction algorithm calculations based on generator coordinate method (GCM)+orthogonality condition(OC)+polinomial ridge regression (RR). Comparison to experimental data.

doi: 10.1103/PhysRevC.107.024304
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2022AL19      Phys.Rev. C 106, 054304 (2022)

P.Alexa, M.Abolghasem, G.Thiamova, D.Bonatsos, T.R.Rodriguez, P.-G.Reinhard

Macroscopic and microscopic description of phase transition in cerium isotopes

NUCLEAR STRUCTURE 146,148Ce, 150Ce; calculated levels, J, π, B(E2), ground state deformation. 142,144,146,148,150,152Ce; calculated potential energy surface, potential energy curves. Calculations in the framework of the macroscopic algebraic collective model (ACM) and two microscopic approaches - Skyrme-Hartree-Fock+Bardeen-Cooper-Schrieffer (BCS) and the symmetry conserving configuration mixing method (SCCM) with Gogny energy density functionals. Systematics of the experimental energy ratios for 0+, 2+, 4+, 6+ levels of Ce, Nd, Sm, Gd and Dy isotopes. Comparison with experimental data.

doi: 10.1103/PhysRevC.106.054304
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2022FR04      Eur.Phys.J. A 58, 64 (2022)

M.Frosini, T.Duguet, J.-P.Ebran, B.Bally, H.Hergert, T.R.Rodriguez, R.Roth, J.M.Yao, V.Soma

Multi-reference many-body perturbation theory for nuclei, III. Ab initio calculations at second order in PGCM-PT

doi: 10.1140/epja/s10050-022-00694-x
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2022FR05      Eur.Phys.J. A 58, 63 (2022)

M.Frosini, T.Duguet, J.-P.Ebran, B.Bally, T.Mongelli, T.R.Rodriguez, R.Roth, V.Soma

Multi-reference many-body perturbation theory for nuclei, II. Ab initio study of neon isotopes via PGCM and IM-NCSM calculations

doi: 10.1140/epja/s10050-022-00693-y
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2022GA33      Phys.Rev. C 106, 064307 (2022)

P.E.Garrett, M.Zielinska, A.Bergmaier, T.R.Rodriguez, D.Kalaydjieva, M.Siciliano, H.Bidaman, V.Bildstein, C.Burbadge, A.Diaz Varela, D.T.Doherty, T.Faestermann, K.Hadynska-Klek, R.Hertenberger, N.Keeley, A.Laffoley, A.D.MacLean, M.Mahgoub, A.J.Radich, M.Rocchini, P.Spagnoletti, S.Triambak, M.Vandebrouck, K.Wrzosek-Lipska

Coulomb excitation of 102Ru with 12C and 16O

NUCLEAR REACTIONS 102Ru(12C, 12C'), E=45, 53 MeV; 102Ru(16O, 16O'), E=56 MeV; measured reaction products, momentum of the scattered particles, angular distributions; deduced population of the excited states in 102Ru. 102Ru; deduced levels, J, π, B(E2), B(E3), E0 monopole transition strengths, transition matrix elements. GOSIA analysis of Coulomb excitation combined with FRESCO calculations. Comparison to calculations performed using the symmetry-conserving configuration-mixing (SCCM) method employing the Gogny-D1S energy-density functional. Systematics of experimentally obtained B(E3) values for Ru, Mo and Pd isotopes. Q3D magnetic spectrograph at at the Maier Leibnitz Laboratory.

doi: 10.1103/PhysRevC.106.064307
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2022MA53      Phys.Rev. C 106, 054301 (2022)

J.Martinez-Larraz, T.R.Rodriguez

Optimization of the number of intrinsic states included in the discrete generator coordinate method

NUCLEAR STRUCTURE 40Ca, 80Sr, 186Pb; calculated levels, J, π, ground-state energies, total energies as a function of the axial quadrupole deformation. 186Pb; calculated energies of 0+ states. Calculations based on discrete generator coordinate method (GCM) with Gogny D1S energy density functional and the axial quadrupole deformation as the GCM degree of freedom.

doi: 10.1103/PhysRevC.106.054301
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2021BA17      Eur.Phys.J. A 57, 69 (2021); Erratum Eur.Phys.J. A 57, 124 (2021)

B.Bally, A.Sanchez-Fernandez, T.R.Rodriguez

Symmetry-projected variational calculations with the numerical suite TAURUS

doi: 10.1140/epja/s10050-021-00369-z
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2021RO04      Phys.Rev. C 103, 014311 (2021)

M.Rocchini, K.Hadynska-Klek, A.Nannini, A.Goasduff, M.Zielinska, D.Testov, T.R.Rodriguez, A.Gargano, F.Nowacki, G.De Gregorio, H.Naidja, P.Sona, J.J.Valiente-Dobon, D.Mengoni, P.R.John, D.Bazzacco, G.Benzoni, A.Boso, P.Cocconi, M.Chiari, D.T.Doherty, F.Galtarossa, G.Jaworski, M.Komorowska, N.Marchini, M.Matejska-Minda, B.Melon, R.Menegazzo, P.J.Napiorkowski, D.Napoli, M.Ottanelli, A.Perego, L.Ramina, M.Rampazzo, F.Recchia, S.Riccetto, D.Rosso, M.Siciliano

Onset of triaxial deformation in 66Zn and properties of its first excited 0+ state studied by means of Coulomb excitation

NUCLEAR REACTIONS 208Pb(66Zn, 66Zn'), E=240 MeV from the XTU-Tandem accelerator of INFN-Legnaro; measured Eγ, Iγ, scattered 66Zn particles, (66Zn)γ-coin, γ-ray yields, γ(θ), (66Zn)γ(θ) in safe Coulomb excitation using GALILEO spectrometer for γ radiation, and SPIDER array for 66Zn particles. 66Zn; deduced levels, J, π, Coulomb excitation yields, reduced E2, E3, and M1 matrix elements using GOSIA least-squares fitting analysis, B(E2), B(E3), B(M1), spectroscopic quadrupole moments for the first and second 2+ and the first 4+ states, quadrupole shape invariants and deformation parameters; calculated collective wave function contours for selected states in 66Zn, and potential energy surfaces for 64,66,68,70Zn in (β2, γ) plane. Comparison with extensive beyond-mean-field (BMF) and large-scale shell-model calculations with a variety of model spaces and interactions, and with results of previous experimental results. Systematics of low-lying states in 62,64,66,68,70Zn.

doi: 10.1103/PhysRevC.103.014311
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2021RO22      Phys.Rev. C 104, 054317 (2021)

A.M.Romero, J.M.Yao, B.Bally, T.R.Rodriguez, J.Engel

Application of an efficient generator-coordinate subspace-selection algorithm to neutrinoless double-β decay

RADIOACTIVITY 76Ge(2β-); calculated valence-space nuclear matrix elements (NMEs) for 0νββ decay mode with shell model, ab initio methods using the GCN2850 interaction, and the energy-transition-orthogonality procedure (ENTROP).

NUCLEAR STRUCTURE 76Ge, 76Se; calculated valence-space ground-state energies of 76Ge and 76Se in the natural basis, and the energy-transition-orthogonality procedure (ENTROP), positive-parity low-energy levels using three methods: shell-model code BIGSTICK, a gradient descent procedure, and by ENTROP, potential-energy surfaces in (β, γ) plane by ENTROP.

doi: 10.1103/PhysRevC.104.054317
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2021SA49      Phys.Rev. C 104, 054306 (2021)

A.Sanchez-Fernandez, B.Bally, T.R.Rodriguez

Variational approximations to exact solutions in shell-model valence spaces: Systematic calculations in the sd shell

NUCLEAR STRUCTURE 24Ne; calculated total Hartree-Fock-Bogoliubov (HFB) and variation after particle-number projection (VAPNP) energies, isoscalar and isovector pairing amplitudes, quadrupole moments, B(E2), distribution in eigenstates of proton and neutron number operators of the intrinsic wave functions, total energy surfaces in (β2, γ) plane as a function of the triaxial deformation. 25Ne, 24Na; calculated HFB and VAPNP energies. 17,18,19,20,21,22,23,24,25,26,27O, 18,19,20,21,22,23,24,25,26,27,28,29Ne, 20,21,22,23,24,25,26,27,28,29,30,31Mg, 22,23,24,25,26,27,28,29,30,31,32,33Si, 24,25,26,27,28,29,30,31,32,33,34,35S, 26,27,28,29,30,31,32,33,34,35,36,37Ar; 18,20,22,24,26,28F, 20,22,24,26,28,30Na, 22,24,26,28,30,32Al, 24,26,28,30,32,34P, 26,28,30,32,34,36Cl, 28,30,32,34,36,38K; calculated energy differences with respect to the exact solution for unconstrained HFB, VAPNP and projected generator coordinate methods (PGCM) for even-even, even-odd nuclei and odd-odd nuclei in the sd shell; analyzed role of proton-neutron (pn) mixing and the quadrupole and pairing degrees of freedom in sd-shell nuclei. Calculations based on Hartree-Fock-Bogoliubov (HFB), variation after particle-number projection (VAPNP), and projected generator coordinate methods (PGCM), using the USD Hamiltonian.

doi: 10.1103/PhysRevC.104.054306
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2021SI26      Phys.Rev. C 104, 034320 (2021)

M.Siciliano, J.J.Valiente-Dobon, A.Goasduff, T.R.Rodriguez, D.Bazzacco, G.Benzoni, T.Braunroth, N.Cieplicka-Orynczak, E.Clement, F.C.L.Crespi, G.de France, M.Doncel, S.Erturk, C.Fransen, A.Gadea, G.Georgiev, A.Goldkuhle, U.Jakobsson, G.Jaworski, P.R.John, I.Kuti, A.Lemasson, H.Li, A.Lopez-Martens, T.Marchi, D.Mengoni, C.Michelagnoli, T.Mijatovic, C.Muller-Gatermann, D.R.Napoli, J.Nyberg, M.Palacz, R.M.Perez-Vidal, B.Saygi, D.Sohler, S.Szilner, D.Testov

Lifetime measurements in the even-even 102-108Cd isotopes

NUCLEAR REACTIONS 92Mo(106Cd, 106Cd'), E=770 MeV; measured Eγ, Iγ, γγ-coin, level T1/2 by recoil-distance Doppler-shift (RDDS) method using the AGATA γ-ray spectrometer, VAMOS++ magnetic spectrometer, and Cologne plunger device at the GANIL facility. 102,104,106,108Cd; deduced levels, J, π, B(E2), B(M1). Comparison with beyond-mean-field calculations, and with previous experimental results for level half-lives. Systematics of the experimental B(E2) values for the first 2+ states in even-mass Cd and Sn isotopes.

NUCLEAR STRUCTURE 102,104,106,108,110,112,114,116,118,120,122,124,126,128,130Cd; calculated energies and B(E2) of the first 2+ and 4+ states, potential energy surfaces (PES) in (β2, γ) plane using particle-number variation-after-projection (PNVAP) method, and collective wave functions (CWFs) contours for the first 2+ and 4+ states in (β2, γ) plane. 106Cd; calculated levels, J, π, collective wave functions (CWFs) contours in (β2, γ) plane. State-of-the-art beyond mean-field calculations using the symmetry-conserving configuration-mixing (SCCM) approach, and Gogny-D1S interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.034320
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2021TE04      Phys.Rev. C 103, 044321 (2021)

D.A.Testov, S.Bakes, J.J.Valiente-Dobon, A.Goasduff, S.Frauendorf, F.Nowacki, T.R.Rodriguez, G.de Angelis, D.Bazzacco, C.Boiano, A.Boso, B.Cederwall, M.Cicerchia, P.Colovic, G.Colucci, F.Didierjean, M.Doncel, J.A.Duenas, F.Galtarossa, A.Gozzelino, K.Hadynska-Klek, G.Jaworski, P.R.John, S.Lenzi, H.Liu, S.Lunardi, R.Menegazzo, D.Mengoni, A.Mentana, D.R.Napoli, G.Pasqualato, F.Recchia, S.Riccetto, L.M.Robledo, M.Rocchini, B.Saygi, M.Siciliano, Yu.Sobolev, S.Szilner

Octupole correlations near 110Te

NUCLEAR REACTIONS 58Ni(58Ni, 2pα)110Te, E=250 MeV; measured Eγ, Iγ, γγ-coin, half-lives of levels by recoil distance Doppler-shift (RDDS) method using a plunger device and differential decay curve method (DDCM), GALILEO Ge-detector array for γ detection and EUCLIDES Si-array for particle detection and reaction channel selection at the XTU-Tandem accelerator facility of National Legnaro Laboratories. 110Te; deduced levels, J, π, B(E2); calculated collective wave functions in (β2, β3) plane for the two lowest negative parity states. Comparison with theoretical calculations using tilted axis cranking approach and the symmetry configuration mixing method with the Gogny D1S interaction. Discussed systematics of configurations, and octupole admixtures for the known bands in 109Te, 110Te and 111I.

doi: 10.1103/PhysRevC.103.044321
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2021WI01      Phys.Rev.Lett. 126, 072501 (2021)

K.Wimmer, W.Korten, P.Doornenbal, T.Arici, P.Aguilera, A.Algora, T.Ando, H.Baba, B.Blank, A.Boso, S.Chen, A.Corsi, P.Davies, G.de Angelis, G.de France, J.-P.Delaroche, D.T.Doherty, J.Gerl, R.Gernhauser, M.Girod, D.Jenkins, S.Koyama, T.Motobayashi, S.Nagamine, M.Niikura, A.Obertelli, J.Libert, D.Lubos, T.R.Rodriguez, B.Rubio, E.Sahin, T.Y.Saito, H.Sakurai, L.Sinclair, D.Steppenbeck, R.Taniuchi, R.Wadsworth, M.Zielinska

Shape Changes in the Mirror Nuclei 70Kr and 70Se

NUCLEAR REACTIONS 197Au, 209Bi(70Kr, 70Kr'), (70Br, 70Br'), (70Se, 70Se'), E=140 MeV/nucleon; measured reaction products, Eγ, Iγ. 70Kr, 70Br, 70Se; deduced γ-ray energies, σ, nuclear deformation lengths, B(E2) values. Comparison with available data.

doi: 10.1103/PhysRevLett.126.072501
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2020CO01      Phys.Lett. B 800, 135071 (2020)

M.L.Cortes, W.Rodriguez, P.Doornenbal, A.Obertelli, J.D.Holt, S.M.Lenzi, J.Menendez, F.Nowacki, K.Ogata, A.Poves, T.R.Rodriguez, A.Schwenk, J.Simonis, S.R.Stroberg, K.Yoshida, L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Wimmer, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, T.Koiwai, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, D.Sohler, P.-A.Soderstrom, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

Shell evolution of N=40 isotones towards 60Ca: First spectroscopy of 62Ti

NUCLEAR REACTIONS 1H(63V, 2p)62Ti, E≈200 MeV/nucleon, [secondary 63V beam from 9Be(70Zn, X), E=345 MeV/nucleon primary reaction followed by separation of fragments of interest event-by-event using BigRIPS spectrometer at RIBF-RIKEN]; measured yields of reaction products with Z=22-24 and A/Q=2.60 to 2.85, Eγ, Iγ, γγ-coin using MINOS device, SAMURAI dipole magnet, Time Projection Chamber (TPC), and DALI2+ array of 226 NaI(Tl) detectors. 62Ti; deduced first 2+ and 4+ levels, cross sections. Comparison with theoretical calculations for N=40, Z=20-32 (even) using large-scale shell model (LSSM), symmetry conserving configuration mixing (SCCM) with Gogny D1S effective interaction, and valence-space in-medium similarity renormalization group (VS-IMSRG).

doi: 10.1016/j.physletb.2019.135071
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2020GA06      Acta Phys.Pol. B51, 799 (2020)

P.E.Garrett, L.Makhathini, R.A.Bark, T.r.rodriguez, S.Valbuena, V.Bildstein, T.D.Bucher, C.Burbadge, R.Dubey, T.Faestermann, R.Hertenberger, M.Kamil, E.A.Lawrie, K.G.Leach, A.D.MacLean, C.Malotana, C.Mehl, S.H.Mthembu, J.Mukwevho, C.Ngwetsheni, S.S.Ntshangase, J.Ondze, J.N.Orce, B.Rebeiro, B.Singh, S.Triambak, E.C.Vyfers, H-F.Wirth

Shape Coexistence in the Ru Isotopes; Multi-spectroscopic Study of 98Ru and Beyond-mean-field Calculations

doi: 10.5506/APhysPolB.51.799
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2020GA10      Phys.Rev. C 101, 044302 (2020)

P.E.Garrett, T.R.Rodriguez, A.Diaz Varela, K.L.Green, J.Bangay, A.Finlay, R.A.E.Austin, G.C.Ball, D.S.Bandyopadhyay, V.Bildstein, S.Colosimo, D.S.Cross, G.A.Demand, P.Finlay, A.B.Garnsworthy, G.F.Grinyer, G.Hackman, B.Jigmeddorj, J.Jolie, W.D.Kulp, K.G.Leach, A.C.Morton, J.N.Orce, C.J.Pearson, A.A.Phillips, A.J.Radich, E.T.Rand, M.A.Schumaker, C.E.Svensson, C.Sumithrarachchi, S.Triambak, N.Warr, J.Wong, J.L.Wood, S.W.Yates

Shape coexistence and multiparticle-multihole structures in 110, 112Cd

RADIOACTIVITY 110,112In(β+), (EC)[from Ta(p, X), E=500 MeV]; 112Ag(β-)[from Ta(p, X), E=500 MeV]; measured Eγ, Iγ, and γγ-coin using 8π HPGe detector array at TRIUMF-ISAC. 110,112Cd; deduced levels, J, π, branching ratios, B(E2), configurations. Comparison of experimental B(E2) values with beyond mean-field calculations. Discussed shape-coexisting intruder band and multiparticle-multihole proton excitations for the second, third and fourth excited 0+ levels of 110,112Cd.

NUCLEAR REACTIONS 110,112Cd(n, n'), E=2.1-3.4 MeV; analyzed earlier γ(θ) and DSAM data; deduced half-lives of excited states.

NUCLEAR STRUCTURE 110,112Cd; calculated levels, J, π, B(E2), collective wave function contours in the (β2, γ) plane for excited states using symmetry conserving configuration mixing method (SCCM), B(E2) by beyond mean-field method. Comparison with experimental data.

doi: 10.1103/PhysRevC.101.044302
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2020GA26      Phys.Lett. B 809, 135762 (2020)

P.E.Garrett, L.Makhathini, R.A.Bark, T.R.Rodriguez, S.Valbuena, V.Bildstein, T.D.Bucher, C.Burbadge, R.Dubey, T.Faestermann, R.Hertenberger, M.Kamil, E.A.Lawrie, K.G.Leach, A.D.MacLean, C.Mehl, S.H.Mthembu, N.J.Mukwevho, C.Ngwetsheni, S.S.Ntshangase, J.C.Nzobadila Ondze, J.N.Orce, B.Rebeiro, B.Singh, S.Triambak, E.C.Vyfers, H.-F.Wirth

Observation of the 0+2 and γ bands in 98Ru, and shape coexistence in the Ru isotopes

RADIOACTIVITY 98Rh(β+), (EC) [from 89Y(12C, 3n), E=47.5 MeV]; measured decay products, Eγ, Iγ; deduced γ-ray energies and intensities, branching, σ(θ), J, π, bands. Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2020.135762
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2020LI15      Phys.Rev.Lett. 124, 222501 (2020)

C.Lizarazo, P.-A.Soderstrom, V.Werner, N.Pietralla, P.M.Walker, G.X.Dong, F.R.Xu, T.R.Rodriguez, F.Browne, P.Doornenbal, S.Nishimura, CC.Nija, A.Obertelli, T.Ando, T.Arici, G.Authelet, H.Baba, A.Blazhev, A.M.Bruce, D.Calvet, R.J.Caroll, F.Chateau, S.Chen, L.X.Chung, A.Corsi, M.L.Cortes, A.Delbart, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, J.Gerl, J.-M.Gheller, A.Giganon, A.Gillibert, M.Gorska, A.Gottardo, I.Kojouharov, N.Kurz, V.Lapoux, J.Lee, M.Lettmann, B.D.Linh, J.J.Liu, Z.Liu, S.Momiyama, K.Moschner, T.Motobayashi, S.Nagamine, N.Nakatsuka, M.Niikura, C.Nobs, L.Olivier, Z.Patel, N.Paul, Zs.Podolyak, J.-Y.Rousse, M.Rudigier, T.Y.Saito, H.Sakurai, C.Santamaria, H.Schaffner, C.Shand, I.Stefan, D.Steppenbeck, R.Taniuchi, T.Uesaka, V.Vaquero, K.Wimmer, Z.Xu

Metastable States of 92, 94Se: Identification of an Oblate K Isomer of 94Se and the Ground-State Shape Transition between N = 58 and 60

NUCLEAR REACTIONS 9Be(238U, X)92Se/94Se, 1H(92Se, 92Se'), (94Se, 94Se'), E<345 MeV/nucleon; measured reaction products. 92,94Se; deduced γ-ray energies, J, π, isomeric state T1/2. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.124.222501
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2020SI13      Phys.Rev. C 102, 014318 (2020)

M.Siciliano, I.Zanon, A.Goasduff, P.R.John, T.R.Rodriguez, S.Peru, I.Deloncle, J.Libert, M.Zielinska, D.Ashad, D.Bazzacco, G.Benzoni, B.Birkenbach, A.Boso, T.Braunroth, M.Cicerchia, N.Cieplicka-Orynczak, G.Colucci, F.Davide, G.de Angelis, B.de Canditiis, A.Gadea, L.P.Gaffney, F.Galtarossa, A.Gozzelino, K.Hadynska-Klek, G.Jaworski, P.Koseoglou, S.M.Lenzi, B.Melon, R.Menegazzo, D.Mengoni, A.Nannini, D.R.Napoli, J.Pakarinen, D.Quero, P.Rath, F.Recchia, M.Rocchini, D.Testov, J.J.Valiente-Dobon, A.Vogt, J.Wiederhold, W.Witt

Shape coexistence in neutron-deficient 188Hg investigated via lifetime measurements

NUCLEAR REACTIONS 158Gd(34S, 4n), E=165 MeV; 160Gd(34S, 6n), E=185 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by recoil-distance Doppler-shift (RDDS) method using the GALILEO γ-ray spectrometer, Neutron Wall array, and GALILEO plunger device at the INFN-LNL facility. 188Hg; deduced levels, J, π, B(E2), transition quadrupole moments, β2, shape coexistence, and deformations for normal and intruder configurations. Comparison with two-band mixing model with beyond-mean-field approaches, and with previous experimental results for level lifetimes. Systematics of levels in yrast bands in N=96-114 even-even mercury isotopes, and those of mean-square charge radii for N=96-114 even-even Hg, Pb and Po isotopes.

NUCLEAR STRUCTURE 180,182,184,186,188Hg; calculated levels, J, π, rotational bands built on the first two 0+ states using the two-band mixing model, potential energy surfaces (PES) in (β2, γ) plane, single-proton and neutron energies as function of the deformation β2. Two state-of-the-art beyond mean-field calculations using the symmetry-conserving configuration-mixing (SCCM) approach for axial shapes and the five-dimensional collective Hamiltonian (5DCH).

doi: 10.1103/PhysRevC.102.014318
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2020WI05      Eur.Phys.J. A 56, 159 (2020)

K.Wimmer, T.Arici, W.Korten, P.Doornenbal, J.-P.Delaroche, M.Girod, J.Libert, T.R.Rodriguez, P.Aguilera, A.Algora, T.Ando, H.Baba, B.Blank, A.Boso, S.Chen, A.Corsi, P.Davies, G.de Angelis, G.de France, D.T.Doherty, J.Gerl, R.Gernhauser, T.Goigoux, D.Jenkins, G.Kiss, S.Koyama, T.Motobayashi, S.Nagamine, M.Niikura, S.Nishimura, A.Obertelli, D.Lubos, V.H.Phong, B.Rubio, E.Sahin, T.Y.Saito, H.Sakurai, L.Sinclair, D.Steppenbeck, R.Taniuchi, V.Vaquero, R.Wadsworth, J.Wu, M.Zielinska

Shape coexistence revealed in the N = Z isotope 72Kr through inelastic scattering

doi: 10.1140/epja/s10050-020-00171-3
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2020YA16      Phys.Rev.Lett. 124, 232501 (2020)

J.M.Yao, B.Bally, J.Engel, R.Wirth, T.R.Rodriguez, H.Hergert

Ab Initio Treatment of Collective Correlations and the Neutrinoless Double Beta Decay of 48Ca

RADIOACTIVITY 48Ca(2β-); calculated particle-number projected potential energy surfaces. 48Ti; deduced nuclear matrix elements correlations with B(E2).

doi: 10.1103/PhysRevLett.124.232501
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2019BA42      Phys.Rev. C 100, 044308 (2019)

B.Bally, A.Sanchez-Fernandez, T.R.Rodriguez

Variational approximations to exact solutions in shell-model valence spaces: Calcium isotopes in the pf shell

NUCLEAR STRUCTURE 48Ca; calculated total energy surfaces (TES) as a function of the quadrupole degrees of freedom in the (β2, γ) plane, intrinsic pairing energy, particle-number projected, and particle-number and angular-momentum projected total energy surfaces as a function of the axial quadrupole (β2, γ=0 or 180 degrees) and nn-pairing degrees of freedom, levels, J, π, wave functions, B(E2), spectroscopic electric quadrupole moments, occupation numbers. 42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60Ca; calculated ground-state energies, energy difference between the approximate and exact ground-state energies computed with different variational approaches, excitation energies as a function of the angular momentum. Calculations used several projected generator coordinate methods (PGCM) in reproducing the exact eigenstates of the shell-model Hamiltonian KB3G in the pf-shell valence space.

doi: 10.1103/PhysRevC.100.044308
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2019GA28      Phys.Rev.Lett. 123, 142502 (2019)

P.E.Garrett, T.R.Rodriguez, A.Diaz Varela, K.L.Green, J.Bangay, A.Finlay, R.A.E.Austin, G.C.Ball, D.S.Bandyopadhyay, V.Bildstein, S.Colosimo, D.S.Cross, G.A.Demand, P.Finlay, A.B.Garnsworthy, G.F.Grinyer, G.Hackman, B.Jigmeddorj, J.Jolie, W.D.Kulp, K.G.Leach, A.C.Morton, J.N.Orce, C.J.Pearson, A.A.Phillips, A.J.Radich, E.T.Rand, M.A.Schumaker, C.E.Svensson, C.Sumithrarachchi, S.Triambak, N.Warr, J.Wong, J.L.Wood, S.W.Yates

Multiple Shape Coexistence in 110, 112Cd

RADIOACTIVITY 110,112In(β+), (EC), 112Ag(β-); measured decay products, Eγ, Iγ; deduced γ-ray energies, weak decay branches from nonyrast states.

NUCLEAR REACTIONS 110,112Cd(n, n'), E not given; measured reaction products, Eγ, Iγ; deduced γ-ray energies, branching ratios and level T1/2, intruder γ-bands. The Doppler-shift attenuation method, comparison with Monte Carlo shell model (MCSM) calculations.

doi: 10.1103/PhysRevLett.123.142502
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2019GO20      Phys.Rev. C 100, 034302 (2019)

A.Goasduff, J.Ljungvall, T.R.Rodriguez, F.L.Bello Garrote, A.Etile, G.Georgiev, F.Giacoppo, L.Grente, M.Klintefjord, A.Kusoglu, I.Matea, S.Roccia, M.-D.Salsac, C.Sotty

B(E2) anomalies in the yrast band of 170Os

NUCLEAR REACTIONS 142Nd(32S, 4n)170Os, E=170 MeV; measured Eγ, Iγ, γγ-coin, half-lives of the first 2+ and 4+ levels by recoil-distance Doppler-shift (RDDS) method using the Orsay universal plunger system, enriched target and ORGAM germanium detector array with ten Compton-suppressed HPGe detectors at the ALTO facility of IPN, Orsay. 170Os; deduced levels, B(E2). Comparison with state-of-the-art beyond-mean-field calculations.

NUCLEAR STRUCTURE 162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198Os; calculated energies of the first 2+ and 4+ levels and their ratios, B(E2) for the first 2+ and 4+ states for 168,170,172Os, and PN-VAP potential energy surfaces for g.s., first 2+ and 4+ states in 170Os. Symmetry conserving configuration mixing (SCCM) calculations using the generator coordinate method (GCM) framework with Hartree-Fock-Bogoliubov states from variation after particle number projection (PN-VAP). Comparison with available experimental data.

doi: 10.1103/PhysRevC.100.034302
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2019RO01      J.Phys.(London) G46, 013001 (2019)

L.M.Robledo, T.R.Rodriguez, R.R.Rodriguez-Guzman

Mean field and beyond description of nuclear structure with the Gogny force: a review

doi: 10.1088/1361-6471/aadebd
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2018TH06      Phys.Rev. C 98, 064304 (2018)

G.Thiamova, Y.Grachev, M.Abolghasem, P.Alexa, P.-G.Reinhard, T.R.RodrIguez, G.S.Simpson

Macroscopic and microscopic description of low-energy collective states in 86, 88Se

NUCLEAR STRUCTURE 86,88Se; calculated levels, J, π, B(E2), potential energy curves (PEC), collective wave function contours in (β2, γ) plane using Algebraic collective model (ACM) with five-dimensional collective Hamiltonian, and symmetry conserving configuration mixing (SCCM) method with Gogny energy density functionals (EDF). Comparison with experimental data. 74,76,78,80,82,84,86,88,90,92,94,96,98,100Se; calculated energies of the first 2+ states, triaxiality, deformation β2, oblate and prolate potential energy curve minima using Skyrme-Hartree-Fock model (SHF) with two parametrizations SVbas and sym34. 82,84,86Ge, 84,86,88Se, 86,88,90,92,94Kr, 88,90,92,94,96Sr; compiled systematics of experimental energies of the first 2+ states, E(first 4+)/E(first 2+) and E(second 2+)/E(first 2+) ratios.

doi: 10.1103/PhysRevC.98.064304
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2017BE08      Acta Phys.Pol. B48, 249 (2017)

R.N.Bernard, L.M.Robledo, T.R.Rodriguez

Octupole Correlations in a Symmetry Conserving Framework

NUCLEAR STRUCTURE 144Ba; calculated potential surface vs deformation β2 and β3 parameters, mass excess, levels, J, π, potential surface vs deformation β2 and β3 parameters, mass excess for specified states J, π, transition strength matrix elements using microscopic framework involving angular momentum, parity and particle number projected intrinsic HFB states, Gogny D1S interaction; deduce strong octupole collectivity

doi: 10.5506/APhysPolB.48.249
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2017BU07      Phys.Rev.Lett. 118, 152504 (2017)

B.Bucher, S.Zhu, C.Y.Wu, R.V.F.Janssens, R.N.Bernard, L.M.Robledo, T.R.Rodriguez, D.Cline, A.B.Hayes, A.D.Ayangeakaa, M.Q.Buckner, C.M.Campbell, M.P.Carpenter, J.A.Clark, H.L.Crawford, H.M.David, C.Dickerson, J.Harker, C.R.Hoffman, B.P.Kay, F.G.Kondev, T.Lauritsen, A.O.Macchiavelli, R.C.Pardo, G.Savard, D.Seweryniak, R.Vondrasek

Direct Evidence for Octupole Deformation in 146Ba and the Origin of Large E1 Moment Variations in Reflection-Asymmetric Nuclei

NUCLEAR REACTIONS 208Pb(146Ba, 146Ba'), E=659 MeV; measured reaction products, Eγ, Iγ. 144,146,148Ba; deduced energy levels, J, π, B(Eλ), quadrupole and octupole deformation parameters. Calculated HFB potential energy surfaces, neutron single-particle energies. Coulomb excitation, comparison with available data.

doi: 10.1103/PhysRevLett.118.152504
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2017CH18      Phys.Rev. C 95, 041302 (2017)

S.Chen, P.Doornenbal, A.Obertelli, T.R.Rodriguez, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.M.Bruce, R.Caroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.R.Nita, C.Nobs, L.Olivier, R.Orlandi, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, V.Vaquero, V.Werner, K.Wimmer, Z.Xu

Low-lying structure and shape evolution in neutron-rich Se isotopes

NUCLEAR REACTIONS 1H(89Se, np), (91Br, 2p), (94Br, n2p), (95Br, 2p), E=270 MeV/nucleon, [secondary 89Se, 91,94,95Br beams from 9Be(238U, F), E=345 MeV/nucleon using BigRIPS fragment separator at RIBF-RIKEN facility]; measured particle spectra using time projection chamber (TPC) of the MINOS ensemble, and Doppler-corrected gamma spectra, Eγ, Iγ, γγ-coin using DALI2 array of 186 NaI(Tl) detectors. 88,90,92,94Se; deduced levels, J, π, triaxiality; calculated potential energy surfaces for g.s., first and second 2+ states. Comparison with self-consistent beyond-mean-field calculations using Gogny D1S interaction. Systematics of first 2+ states and E(first 4+)/E(first 2+) for N=50-60 even-A Zr, Sr, Kr, and Se isotopes.

doi: 10.1103/PhysRevC.95.041302
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2017FL03      Phys.Rev.Lett. 118, 242501 (2017)

F.Flavigny, P.Doornenbal, A.Obertelli, J.-P.Delaroche, M.Girod, J.Libert, T.R.Rodriguez, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.Bruce, R.Carroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, C.R.Nobs, L.Olivier, R.Orlandi, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.A.Soderstrom, I.Stefan, V.Vaquero, V.Werner, K.Wimmer, Z.Xu

Shape Evolution in Neutron-Rich Krypton Isotopes Beyond N=60: First Spectroscopy of 98, 100Kr

NUCLEAR REACTIONS 1H(99Rb, 2p)98Kr, E=260 MeV/nucleon; 1H(101Rb, 2p)100Kr, E=170 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced energy levels, J, π. Comparison with state-of-the-art beyond-mean-field calculations using the Gogny D1S interaction.

doi: 10.1103/PhysRevLett.118.242501
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2017JO07      Phys.Rev. C 95, 064321 (2017)

P.R.John, J.J.Valiente-Dobon, D.Mengoni, V.Modamio, S.Lunardi, D.Bazzacco, A.Gadea, C.Wheldon, T.R.Rodriguez, T.Alexander, G.de Angelis, N.Ashwood, M.Barr, G.Benzoni, B.Birkenbach, P.G.Bizzeti, A.M.Bizzeti-Sona, S.Bottoni, M.Bowry, A.Bracco, F.Browne, M.Bunce, F.Camera, L.Corradi, F.C.L.Crespi, B.Melon, E.Farnea, E.Fioretto, A.Gottardo, L.Grente, H.Hess, Tz.Kokalova, W.Korten, A.Kusoglu, S.Lenzi, S.Leoni, J.Ljungvall, R.Menegazzo, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, D.R.Napoli, Zs.Podolyak, G.Pollarolo, F.Recchia, P.Reiter, O.J.Roberts, E.Sahin, M.-D.Salsac, F.Scarlassara, M.Sferrazza, P.-A.Soderstrom, A.M.Stefanini, S.Szilner, C.A.Ur, A.Vogt, J.Walshe

In-beam γ-ray spectroscopy of the neutron-rich platinum isotope 200Pt toward the N=126 shell gap

NUCLEAR REACTIONS 198Pt(82Se, 80Se)200Pt, E=426 MeV; measured Eγ, Iγ, (80Se recoils)γγ-coin using PRISMA spectrometer for 80Se recoils and AGATA array for Doppler-corrected γ rays at XTU Tandem-ALPI accelerator of LNL-Legnaro facility. 200Pt; deduced levels, J, π, ground-state band, structure above the 17-ns, 7- isomer. Comparison with theoretical model calculations.

NUCLEAR STRUCTURE 190,192,194,196,198,200,202,204Pt; calculated particle-number-projected potential energy surfaces in (β2, γ) plane, yrast band excitation energies. Beyond mean-field, symmetry-conserving configuration-mixing (SCCM) calculations based on Gogny D1S energy density functionals. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.064321
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2017LE08      Phys.Rev. C 96, 011301 (2017)

M.Lettmann, V.Werner, N.Pietralla, P.Doornenbal, A.Obertelli, T.R.Rodriguez, K.Sieja, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.Bruce, R.J.Caroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, C.R.Nobs, L.Olivier, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, V.Vaquero, K.Wimmer, Z.Xu

Triaxiality of neutron-rich 84, 86, 88Ge from low-energy nuclear spectra

NUCLEAR REACTIONS 1H(85Ge, np), (87As, 2p), (89As, 2p), E≈270 MeV/nucleon reduced to ≈70 MeV/nucleon through the target, [85Ge, 87As and 89As secondary beams from 9Be(238U, F), E=345 MeV primary reaction at RIBF-RIKEN facility]; measured yields of fission fragments using time-of-flight method and BigRIPS magnetic spectrometer, particle spectra using ZeroDegree spectrometer and Doppler-corrected Eγ, Iγ, γγ-coin using DALI2 array of NaI detectors. 84,86,88Ge; deduced levels, J, π. Systematics of energies of first 2+ and 4+ states in even-even Z=32-40, N=50-60 nuclei. 86,88Ge; calculated potential energy surfaces in (β2, γ) plane using particle number variation after projection (PN-VAP) approach. Discussed triaxiality in even-even Ge nuclei based upon the observation of a tentative 3+ state in 86Ge. Comparison with shell-model, and symmetry-conserving configuration mixing Gogny (SCCM) model.

doi: 10.1103/PhysRevC.96.011301
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2017PA01      Phys.Rev.Lett. 118, 032501 (2017)

N.Paul, A.Corsi, A.Obertelli, P.Doornenbal, G.Authelet, H.Baba, B.Bally, M.Bender, D.Calvet, F.Chateau, S.Chen, J.-P.Delaroche, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, M.Girod, P.-H.Heenen, V.Lapoux, J.Libert, T.Motobayashi, M.Niikura, T.Otsuka, T.R.Rodriguez, J.-Y.Rousse, H.Sakurai, C.Santamaria, N.Shimizu, D.Steppenbeck, R.Taniuchi, T.Togashi, Y.Tsunoda, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.M.Bruce, R.Carroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, C.R.Nobs, L.Olivier, Z.Patel, Z.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, R.Orlandi, V.Vaquero, V.Werner, K.Wimmer, Z.Xu

Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of 110Zr

NUCLEAR REACTIONS H(113Tc, p)112Mo, (111Nb, p)110Zr, E=260 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced 2+ state energies, R4/2 energy ratio. Comparison with Monte Carlo shell model predictions.

doi: 10.1103/PhysRevLett.118.032501
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2017RO05      J.Phys.(London) G44, 034002 (2017)

T.R.Rodriguez

Role of triaxiality in 76Ge and 76Se nuclei studied with Gogny energy density functionals

NUCLEAR STRUCTURE 76Ge, 76Se; calculated energy levels, J, π, energy ratios, quadrupole and magnetic dipole moments, occupation numbers. Comparison with available data.

doi: 10.1088/1361-6471/aa57d3
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2016AR15      Phys.Rev. C 94, 054319 (2016)

A.Arzhanov, T.R.Rodriguez, G.Martinez-Pinedo

Systematic study of infrared energy corrections in truncated oscillator spaces with Gogny energy density functionals

NUCLEAR STRUCTURE 16,18,20,22,24O, 90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152Cd; calculated HFB energies as function of oscillator length, convergence pattern of HFB energies as a function of maximum number of SHO shells, S(2n). Z=48, 50, 52, N=40-130; calculated infra red (IR) extrapolations. Self-consistent mean-field calculations based on the Hartree-Fock-Bogolyubov (HFB) method with Gogny type effective interactions.

doi: 10.1103/PhysRevC.94.054319
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2016BE18      Phys.Rev. C 93, 061302 (2016)

R.N.Bernard, L.M.Robledo, T.R.Rodriguez

Octupole correlations in the 144Ba nucleus described with symmetry-conserving configuration-mixing calculations

NUCLEAR STRUCTURE 144Ba; calculated HFB potential energy surface (PES), particle number, parity, and angular momentum PES in (β2, β3) plane, levels, J, π, B(E1), B(E2), B(E3), collective wave functions for the ground state and first excited negative-parity bands. Symmetry-conserving configuration-mixing method (SCCM) based on a Gogny energy density functional (EDF). Comparison with experimental data.

doi: 10.1103/PhysRevC.93.061302
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2016EG01      Phys.Rev.Lett. 116, 052502 (2016)

J.L.Egido, M.Borrajo, T.R.Rodriguez

Collective and Single-Particle Motion in Beyond Mean Field Approaches

NUCLEAR STRUCTURE 44S; calculated energy levels, J, π, bands. Symmetry conserving configuration mixing (SCCM) method, comparison with available data.

doi: 10.1103/PhysRevLett.116.052502
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2016HA23      Phys.Rev.Lett. 117, 062501 (2016)

K.Hadynska-Klek, P.J.Napiorkowski, M.Zielinska, J.Srebrny, A.Maj, F.Azaiez, J.J.Valiente Dobon, M.Kicinska-Habior, F.Nowacki, H.Naidja, B.Bounthong, T.R.Rodriguez, G.de Angelis, T.Abraham, G.Anil Kumar, D.Bazzacco, M.Bellato, D.Bortolato, P.Bednarczyk, G.Benzoni, L.Berti, B.Birkenbach, B.Bruyneel, S.Brambilla, F.Camera, J.Chavas, B.Cederwall, L.Charles, M.Ciemala, P.Cocconi, P.Coleman-Smith, A.Colombo, A.Corsi, F.C.L.Crespi, D.M.Cullen, A.Czermak, P.Desesquelles, D.T.Doherty, B.Dulny, J.Eberth, E.Farnea, B.Fornal, S.Franchoo, A.Gadea, A.Giaz, A.Gottardo, X.Grave, J.Grebosz, A.Gorgen, M.Gulmini, T.Habermann, H.Hess, R.Isocrate, J.Iwanicki, G.Jaworski, D.S.Judson, A.Jungclaus, N.Karkour, M.Kmiecik, D.Karpinski, M.Kisielinski, N.Kondratyev, A.Korichi, M.Komorowska, M.Kowalczyk, W.Korten, M.Krzysiek, G.Lehaut, S.Leoni, J.Ljungvall, A.Lopez-Martens, S.Lunardi, G.Maron, K.Mazurek, R.Menegazzo, D.Mengoni, E.Merchan, W.Meczynski, C.Michelagnoli, J.Mierzejewski, B.Million, S.Myalski, D.R.Napoli, R.Nicolini, M.Niikura, A.Obertelli, S.F.Ozmen, M.Palacz, L.Prochniak, A.Pullia, B.Quintana, G.Rampazzo, F.Recchia, N.Redon, P.Reiter, D.Rosso, K.Rusek, E.Sahin, M.-D.Salsac, P.-A.Soderstrom, I.Stefan, O.Stezowski, J.Styczen, Ch.Theisen, N.Toniolo, C.A.Ur, V.Vandone, R.Wadsworth, B.Wasilewska, A.Wiens, J.L.Wood, K.Wrzosek-Lipska, M.Zieblinski

Superdeformed and Triaxial States in 42Ca

NUCLEAR REACTIONS 208Pb, 197Au(42Ca, 42Ca'), E=170 MeV; measured reaction products, Eγ, Iγ. 42Ca; deduced γ-ray energies, B(E2), superdeformed bands. Comparison with available data.

doi: 10.1103/PhysRevLett.117.062501
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2016ME02      Phys.Rev. C 93, 014305 (2016)

J.Menendez, No.Hinohara, J.Engel, G.Martinez-Pinedo, T.R.Rodriguez

Testing the importance of collective correlations in neutrinoless ββ decay

RADIOACTIVITY 42,44,46,48,50,52,54,56,58,60Ca, 44,46,48,50,52,54,56,58Ti, 46,48,50,52,54,56,58,60Cr(2β-); calculated Gamow-Teller part of the 0νββ decay matrix elements, percentage of ground state in daughter nuclei belonging to SU(4) irreducible representations using shell model with KB3G interaction, full collective interaction Hcoll, Hcoll with the quadrupole-quadrupole term removed, Hcoll with the isoscalar pairing term removed, and Hcoll with both the isoscalar-pairing and spin-isospin removed. 48Ca, 76Ge, 82Se, 124Sn, 130Te, 136Xe(2β-); calculated Gamow-Teller matrix elements for 0νββ decay and estimated effect of isoscalar pairing. Role of collective correlations in 0νββ decay. Comparison of GCM calculations for fp shell nuclei with full shell-model calculations.

NUCLEAR STRUCTURE 46,48,50,52,54,56,58,60Cr; calculated B(E2) for first 2+ states using shell model with KB3G interaction, full collective interaction Hcoll, and by Hcoll without the quadrupole-quadrupole part. Comparison with experimental values.

doi: 10.1103/PhysRevC.93.014305
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2016RO11      Phys.Rev. C 93, 054316 (2016)

T.R.Rodriguez, A.Poves, F.Nowacki

Occupation numbers of spherical orbits in self-consistent beyond-mean-field methods

NUCLEAR STRUCTURE 64Cr; calculated HFB-potential energy surface and HFB single-particle energies for protons and neutrons levels as function of quadrupole deformation, levels, J, π, number of particles occupying spherical single-particle (SSP) levels. 60Ca, 62Ti, 64Cr, 66Fe, 68Ni; calculated HFB-spherical single-particle energies for proton and neutron levels, neutron occupation numbers for N=40 isotones. Self-consistent mean-field calculations with a symmetry conserving configuration mixing (SCCM) method based on the Gogny energy density functional (EDF). Comparison with experimental data.

doi: 10.1103/PhysRevC.93.054316
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2016RO17      Eur.Phys.J. A 52, 190 (2016)

T.R.Rodriguez

Precise description of nuclear spectra with Gogny energy density functional methods

NUCLEAR STRUCTURE 20,22,24,26,28,30,32,34,36,38,40Mg; calculated 2+ and 4+ excitation energies, axial, triaxial and triaxial-plus-cranking J=0 states using SCCM (Symmetry-Conserving Configuration Mixing). Compared with published data.

doi: 10.1140/epja/i2016-16190-2
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2015JO04      Acta Phys.Pol. B46, 613 (2015)

P.R.John, V.Modamio, J.J.Valiente-Dobon, D.Mengoni, S.Lunardi, T.R.Rodriguez, and the AGATA Collaboration

Shape Evolution in the Neutron-rich Osmium Isotopes: Prompt γ-ray Spectroscopy of 196Os

NUCLEAR REACTIONS 198Pt(82Se, 84Kr)196Os, E=426 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, yrast band excitations. Comparison with previous results.

doi: 10.5506/APhysPolB.46.613
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2015RO07      Phys.Rev. C 91, 044315 (2015)

T.R.Rodriguez, A.Arzhanov, G.Martinez-Pinedo

Toward global beyond-mean-field calculations of nuclear masses and low-energy spectra

NUCLEAR STRUCTURE Z=10-105, N=10-170; calculated shell effects, masses, S(2n), and energies of first 2+ states in even-even nuclei; deduced rms comparison between theoretical calculations and experimental data for total energies, S(2n), and S(2p). 120Cd; calculated potential energy surfaces as a function of the axial quadrupole deformation with HFB, PN-VAP, and PNAMP approximations. 120Cd, 194Po; calculated convergence of the energy as a function of the number of major oscillator shells. Self-consistent mean-field (MF) and beyond-mean-field (BMF) calculations with Gogny D1S and D1M parametrizations. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.044315
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2014IL01      Phys.Rev. C 89, 014313 (2014)

S.Ilieva, M.Thurauf, Th.Kroll, R.Krucken, T.Behrens, V.Bildstein, A.Blazhev, S.Bonig, P.A.Butler, J.Cederkall, T.Davinson, P.Delahaye, J.Diriken, A.Ekstrom, F.Finke, L.M.Fraile, S.Franchoo, Ch.Fransen, G.Georgiev, R.Gernhauser, D.Habs, H.Hess, A.M.Hurst, M.Huyse, O.Ivanov, J.Iwanicki, P.Kent, O.Kester, U.Koster, R.Lutter, M.Mahgoub, D.Martin, P.Mayet, P.Maierbeck, T.Morgan, O.Niedermeier, M.Pantea, P.Reiter, T.R.Rodriguez, Th.Rolke, H.Scheit, A.Scherillo, D.Schwalm, M.Seidlitz, T.Sieber, G.S.Simpson, I.Stefanescu, S.Thiel, P.G.Thirolf, J.Van de Walle, P.Van Duppen, D.Voulot, N.Warr, W.Weinzierl, D.Weisshaar, F.Wenander, A.Wiens, S.Winkler

Coulomb excitation of neutron-rich Cd isotopes

NUCLEAR REACTIONS 108Pd(122Cd, 122Cd'), 64Zn, 104Pd(124Cd, 124Cd'), 64Zn(126Cd, 126Cd'), E=2.85 MeV/nucleon, [secondary 122,124,126Cd beams from 238U(p, X), E=1.2 GeV primary reaction]; measured Eγ, Iγ, particle spectra, γγ-, (particle)γ-coin, γ-ray yields, γ(θ), σ(θ), half-life of first 2+ state of 126Cd by DSAM using REXTRAP and EBIS setup, Miniball array for γ rays and DSSDs for particle detection at REX-ISOLDE-CERN facility. 122,124,126Cd; deduced levels, Coulomb-excitation σ, transition and diagonal matrix elements, static quadrupole moments, and B(E2) for first 2+ states. Comparison with shell model and beyond mean field calculations. Discussed onset of collectivity in the vicinity of Z=50 and N=82 shell closures. Systematics of experimental and theoretical values of B(E2) for first 2+ states in A=116-130 even Cd isotopes.

doi: 10.1103/PhysRevC.89.014313
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2014IL02      Phys.Rev. C 89, 054316 (2014)

A.Illana, A.Jungclaus, R.Orlandi, A.Perea, C.Bauer, J.A.Briz, J.L.Egido, R.Gernhauser, J.Leske, D.Mucher, J.Pakarinen, N.Pietralla, M.Rajabali, T.R.Rodriguez, D.Seiler, C.Stahl, D.Voulot, F.Wenander, A.Blazhev, H.De Witte, P.Reiter, M.Seidlitz, B.Siebeck, M.J.Vermeulen, N.Warr

Low-velocity transient-field technique with radioactive ion beams: g factor of the first excited 2+ state in 72Zn

NUCLEAR MOMENTS 72Zn; measured Eγ, Iγ, (particle)γ-coin, γγ(θ, H), precession angles, g factor using the transient-field (TF) technique and MINIBALL cluster Ge detectors at REX-ISOLDE-CERN facility. 72Zn beam of 2.94 MeV/nucleon was obtained from bombardment of UCx target with 1.4-GeV protons using RILIS ion source, REXTRAP, and EBIS ion source. Comparison with shell-model and triaxial beyond-mean-field calculations, and with previous experimental results. Systematics of g factors of first 2+ states in even-even N=32-66 Zn, Ge, Se, Kr and Sr isotopes.

doi: 10.1103/PhysRevC.89.054316
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2014JO05      Phys.Rev. C 90, 021301 (2014)

P.R.John, V.Modamio, J.J.Valiente-Dobon, D.Mengoni, S.Lunardi, T.R.Rodriguez, D.Bazzacco, A.Gadea, C.Wheldon, T.Alexander, G.de Angelis, N.Ashwood, M.Barr, G.Benzoni, B.Birkenbach, P.G.Bizzeti, A.M.Bizzeti-Sona, S.Bottoni, M.Bowry, A.Bracco, F.Browne, M.Bunce, F.Camera, B.Cederwall, L.Corradi, F.C.L.Crespi, P.Desesquelles, J.Eberth, E.Farnea, E.Fioretto, A.Gorgen, A.Gottardo, J.Grebosz, L.Grente, H.Hess, A.Jungclaus, Tz.Kokalova, A.Korichi, W.Korten, A.Kusoglu, S.Lenzi, S.Leoni, J.Ljungvall, G.Maron, W.Meczynski, B.Melon, R.Menegazzo, C.Michelagnoli, T.Mijatovic, B.Million, P.Molini, G.Montagnoli, D.Montanari, D.R.Napoli, P.Nolan, C.Oziol, Zs.Podolyak, G.Pollarolo, A.Pullia, B.Quintana, F.Recchia, P.Reiter, O.J.Roberts, D.Rosso, E.Sahin, M.-D.Salsac, F.Scarlassara, M.Sferrazza, J.Simpson, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, Ch.Theisen, C.A.Ur, J.Walshe

Shape evolution in the neutron-rich osmium isotopes: Prompt γ-ray spectroscopy of 196Os

NUCLEAR REACTIONS 198Pt(82Se, X), E=426 MeV; measured Eγ, Iγ, γγ-, (84Kr)γ-coin using PRISMA spectrometer for fragments and AGATA array for γ rays at Tandem-ALPI-LNL accelerator facility. 196Os; deduced levels, J, π, γ-unstable/triaxial rotor yrast band. Comparison with state-of-the-art beyond-mean-field calculations.

NUCLEAR STRUCTURE 188,190,192,194,196,198Os; calculated particle number projected potential energy surfaces in (β2, γ) plane, level energies in the yrast bands using Gogny D1S interaction. State-of-the-art beyond-meanfield calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.90.021301
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2014ME11      Phys.Rev. C 90, 024311 (2014)

J.Menendez, T.R.Rodriguez, G.Martinez-Pinedo, A.Poves

Correlations and neutrinoless ββ decay nuclear matrix elements of pf-shell nuclei

RADIOACTIVITY 42,44,46,48,50,52,54,56Ca, 44,46,48,50,52,54,56,58Ti, 46,48,50,52,54,56,58,60Cr(2β-); calculated Fermi and Gamow-Teller parts of nuclear matrix elements (NMEs) for 0νββ decay mode, particle-number and angular-momentum projected (J=0) potential energy surfaces and ground-state collective wave functions. Shell model and energy density functional methods.

doi: 10.1103/PhysRevC.90.024311
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2014RO21      Phys.Rev. C 90, 034306 (2014)

T.R.Rodriguez

Structure of krypton isotopes calculated with symmetry-conserving configuration-mixing methods

NUCLEAR STRUCTURE 68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98Kr; calculated potential energy surfaces contours in (β2, γ) plane, neutron single-particle energies as function of β2 parameter, wavefunction contours for low-lying 0+ and 2+ levels in (β2, γ) plane, positive-parity levels up to 8+, quasi γ bands, B(E2), ρ2(E0), quadrupole moments, g factors, deduced shape transitions and shape coexistence. Beyond-self-consistent mean-field, symmetry-conserving configuration mixing (SCCM) methods based on the Gogny D1S interaction. Comparison with experimental results.

doi: 10.1103/PhysRevC.90.034306
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2013BE38      Phys.Rev.Lett. 111, 172501 (2013)

J.Beller, N.Pietralla, J.Barea, M.Elvers, J.Endres, C.Fransen, J.Kotila, O.Moller, A.Richter, T.R.Rodriguez, C.Romig, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, V.Werner, A.Zilges, M.Zweidinger

Constraint on 0νββ Matrix Elements from a Novel Decay Channel of the Scissors Mode: The Case of 154Gd

NUCLEAR REACTIONS 154Gd(γ, γ'), E<4.5 MeV; measured reaction products, Eγ, Iγ; deduced level energies, J, π, B(M1), B(E1). Comparison with IBM-2 and EDF calculations.

RADIOACTIVITY 154Sm(2β-); calculated neutrinoless nuclear matrix elements.

doi: 10.1103/PhysRevLett.111.172501
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2013LO12      Phys.Rev.Lett. 111, 142501 (2013)

N.Lopez Vaquero, T.R.Rodriguez, J.L.Egido

Shape and Pairing Fluctuation Effects on Neutrinoless Double Beta Decay Nuclear Matrix Elements

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 124Sn, 128,130Te, 136Xe, 150Nd(2β-); calculated nuclear matrix elements, binding energies, T1/2. Energy density functional methods, comparison with available data.

doi: 10.1103/PhysRevLett.111.142501
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2013LO15      Phys.Rev. C 88, 064311 (2013)

N.Lopez Vaquero, J.L.Egido, T.R.Rodriguez

Large-amplitude pairing fluctuations in atomic nuclei

NUCLEAR STRUCTURE 24,32Mg, 50,52,54Ca, 52Ti, 54Cr; calculated lowest 0+, 2+, 4+ and 6+ states, potential energy curves, potential energy contours, wavefunctions of lowest 0+ states for 52Ti. 24,26,28,30,32,34Mg, 28,30Si, 32,34S, 50,52,54Ca; calculated energies of 0+ states and E0 strengths for Mg, Si and S isotopes, B(E2) for first 2+ states in Mg and Ca isotopes, rms charge radii and S(2n) for Mg isotopes. 18O; calculated potential energy surfaces. Pairing degree of freedom in beyond-mean-field theories (BMFTs) with finite-range density-dependent Gogny forces. Variation after the projection (VAP), particle-number (PN), angular-momentum projection (AMP), and various other approaches.

doi: 10.1103/PhysRevC.88.064311
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2013SI25      Phys.Rev. C 88, 034327 (2013)

K.Sieja, T.R.Rodriguez, K.Kolos, D.Verney

Laboratory versus intrinsic description of nonaxial nuclei above doubly magic 78Ni

NUCLEAR STRUCTURE 82,84Zn, 84,86Ge, 86,88Se, 88,90Kr; calculated levels, J, π, yrast and excited bands, intrinsic and spectroscopic quadrupole moments, B(E2), deformation parameters β and γ, potential energy surface contours in (β, γ) plane. Algebraic pseudo-SU(3) model, shell model with space outside the 78Ni core, and the particle and angular momentum symmetry conserving beyond-mean field calculations with Gogny forces. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.034327
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2012BA40      Phys.Rev. C 86, 034310 (2012)

C.Bauer, T.Behrens, V.Bildstein, A.Blazhev, B.Bruyneel, J.Butterworth, E.Clement, L.Coquard, J.L.Egido, A.Ekstrom, C.R.Fitzpatrick, C.Fransen, R.Gernhauser, D.Habs, H.Hess, J.Leske, T.Kroll, R.Krucken, R.Lutter, P.Marley, T.Moller, T.Otsuka, N.Patronis, A.Petts, N.Pietralla, T.R.Rodriguez, N.Shimizu, C.Stahl, I.Stefanescu, T.Stora, P.G.Thirolf, D.Voulot, J.van de Walle, N.Warr, F.Wenander, A.Wiens

Prolate shape of 140Ba from a first combined Doppler-shift and Coulomb-excitation measurement at the REX-ISOLDE facility

NUCLEAR REACTIONS 96Mo(140Ba, 140Ba'), [140Ba secondary beam from U(p, X), E=1.4 GeV primary beam], E=392 MeV; measured Eγ, Iγ, (particle)γ-coin, yields in different angular ranges, differential σ(θ), half-life of first 2+ state by DSAM using REX-ISOLDE and MINIBALL setup at ISOLDE-CERN. 140Ba; deduced level, E2 matrix element, B(E2), and static quadrupole moment of first 2+ state. Z=56, A=130=146; systematics of energies and B(E2) of first 2+ states. Comparison with Monte Carlo shell-model approach and beyond-mean-field calculations. Gogny energy density functionals and distribution of probability contours in the triaxial (β, γ) plane for 0+, 2+ and 4+ states first two bands.

NUCLEAR MOMENTS 140Ba; measured static quadrupole moment of first 2+ state by reorientation analysis of Coulomb-excitation yields.

doi: 10.1103/PhysRevC.86.034310
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2012RO11      Phys.Rev. C 85, 044310 (2012)

T.R.Rodriguez, G.Martinez-Pinedo

Calculation of nuclear matrix elements in neutrinoless double electron capture

NUCLEAR STRUCTURE 152Gd, 152Sm, 164Er, 164Dy, 180W, 180Hf; calculated binding energies, rms charge radii, level energies and B(E2) for first 2+ states, collective wave functions, pairing energies, single-particle energies as function of deformation. Gogny D1S and D1M parameterization. Comparison with experimental data.

RADIOACTIVITY 152Gd, 164Er, 180W(2EC); calculated nuclear matrix elements, T1/2, intensity contours of Gamow-Teller part of the 0νECEC NME. Advanced energy density functional method. Gogny D1S and D1M parameterization.

doi: 10.1103/PhysRevC.85.044310
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2012SM07      Phys.Rev. C 86, 044604 (2012)

C.Smorra, T.R.Rodriguez, T.Beyer, K.Blaum, M.Block, Ch.E.Dullmann, K.Eberhardt, M.Eibach, S.Eliseev, K.Langanke, G.Martinez-Pinedo, Sz.Nagy, W.Nortershauser, D.Renisch, V.M.Shabaev, I.I.Tupitsyn, N.A.Zubova

Q value and half-life of double-electron capture in 184Os

ATOMIC MASSES 184Os, 184W; measured time-of-flight and cyclotron frequency ratios using Penning-trap mass spectrometer TRIGA-TRAP; deduced mass excess, Q value for 2β decay.

RADIOACTIVITY 184Os(2EC); measured Q-value using Penning-trap; calculated nuclear matrix element, T1/2. Energy density functional (EDF) calculations.

doi: 10.1103/PhysRevC.86.044604
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2011RO48      Phys.Rev. C 84, 051307 (2011)

T.R.Rodriguez, J.L.Egido

Configuration mixing description of the nucleus 44S

NUCLEAR STRUCTURE 44S; calculated potential energy surfaces (PES) in β-γ plane, levels, J, π, B(E2), spectroscopic quadrupole moments, collective wave function contours in the triaxial plane for ground, first excited and γ bands. symmetry conserving configuration mixing (SCCM) calculations based on Gogny D1S interaction, including beyond-mean-field effects. Comparison with experimental data.

doi: 10.1103/PhysRevC.84.051307
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2011RO59      J.Phys.:Conf.Ser. 312, 092009 (2011)

T.R.Rodriguez, J.L.Egido

Collective motion in complex nuclei

NUCLEAR STRUCTURE 24Mg; calculated levels, J, π, γ transitions, B(E2) using triaxial GCM-PNAMP (particle number and angular momentum projection restoration). 126Xe; calculated deformation energy surfaces, levels, J, π, B(E2) using PN-VAP (particle number variation after projection); compared to data. 24Mg; calculated collective probability distribution vs deformation.

doi: 10.1088/1742-6596/312/9/092009
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2010RO20      Phys.Rev. C 81, 064323 (2010)

T.R.Rodriguez, J.L.Egido

Triaxial angular momentum projection and configuration mixing calculations with the Gogny force

NUCLEAR STRUCTURE 24Mg; calculated potential energy surfaces as function of the β deformation and in β-γ plane, levels, J, π, bands, expectation values of the total angular momentum operator, B(E2), spectroscopic quadrupole moments for axial and triaxial approximations. Generator coordinate method in the β-γ plane with full triaxial angular momentum and particle number projected wave functions using the Gogny force. RVAMPIR approach. Comparison with experimental data.

doi: 10.1103/PhysRevC.81.064323
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2010RO28      Phys.Rev.Lett. 105, 252503 (2010)

T.R.Rodriguez, G.Martinez-Pinedo

Energy Density Functional Study of Nuclear Matrix Elements for Neutrinoless ββ Decay

RADIOACTIVITY 48Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 124Sn, 128,130Te, 136Xe, 150Nd(2β-); calculated T1/2, 0ν nuclear matrix elements. Gogny D1S functional.

doi: 10.1103/PhysRevLett.105.252503
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2009JU02      Acta Phys.Pol. B40, 427 (2009)

A.Jungclaus, T.R.Rodriguez, J.L.Egido

Isomer Spectroscopy and Shell Structure Around Doubly-Magic 132Sn

NUCLEAR REACTIONS 136Xe(Be, X), 238U(Be, X), E=650, 750 MeV/nucleon;126,128,130Cd; measured Eγ, Iγ; deduced Jπ. Beyond mean field calculations, Gogny force.


2009SC11      Phys.Rev.Lett. 103, 012501 (2009)

W.Schwerdtfeger, P.G.Thirolf, K.Wimmer, D.Habs, H.Mach, T.R.Rodriguez, V.Bildstein, J.L.Egido, L.M.Fraile, R.Gernhauser, R.Hertenberger, K.Heyde, P.Hoff, H.Hubel, U.Koster, T.Kroll, R.Krucken, R.Lutter, T.Morgan, P.Ring

Shape Coexistence Near Neutron Number N = 20: First Identification of the E0 Decay from the Deformed First Excited Jπ = 0+ State in 30Mg

RADIOACTIVITY 30Na(β-); measured Eγ, Iγ; deduced J, π, monopole strength, partial E0 lifetime. Comparison with beyond mean field calculations.

doi: 10.1103/PhysRevLett.103.012501
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2007RO19      Phys.Rev.Lett. 99, 062501 (2007)

T.R.Rodriguez, J.L.Egido

New Beyond-Mean-Field Theories: Examination of the Potential Shell Closures at N = 32 or 34

NUCLEAR STRUCTURE Ca, Ti, Cr; calculated level energies and B(E2) using a beyond-mean-field-theory.

doi: 10.1103/PhysRevLett.99.062501
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2006RO45      Phys.Scr. T125, 216 (2006)

T.R.Rodriguez, J.L.Egido, L.M.Robledo

Towards full variation after projection solutions through restricted variational spaces

doi: 10.1088/0031-8949/2006/T125/058
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2005RO10      Phys.Rev. C 71, 044313 (2005)

T.R.Rodriguez, J.L.Egido, L.M.Robledo, R.Rodriguez-Guzman

Quality of the restricted variation after projection method with angular momentum projection

NUCLEAR STRUCTURE 32,34Mg; calculated level energies, quadrupole moments. Role of additional variational coordinates discussed.

doi: 10.1103/PhysRevC.71.044313
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2005RO44      Phys.Rev. C 72, 064303 (2005)

T.R.Rodriguez, J.L.Egido, L.M.Robledo

Restricted variation after projection and the Lipkin-Nogami methods

doi: 10.1103/PhysRevC.72.064303
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2004RO11      Int.J.Mod.Phys. E13, 165 (2004)

T.R.Rodriguez, J.L.Egido, L.M.Robledo, R.R.Rodriguez-Guzman

On the stability of projection after variation solutions

NUCLEAR STRUCTURE 32Mg; calculated deformation energy curves. Projection after variation, stability of solution discussed.

doi: 10.1142/S0218301304001898
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