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2024DE02      Phys.Rev. C 109, 014320 (2024)

J.-P.Delaroche, J.Libert, M.Girod, I.Deloncle, M.Dupuis

Investigations of electric monopole transitions in medium-mass to heavy nuclei: Beyond mean field calculations with the Gogny force

doi: 10.1103/PhysRevC.109.014320
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2022GE01      Phys.Rev. C 105, 024302 (2022)

R.-B.Gerst, A.Blazhev, K.Moschner, P.Doornenbal, A.Obertelli, K.Nomura, J.-P.Ebran, S.Hilaire, J.Libert, 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, 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, J.Jolie, A.Jungclaus, J.Lee, M.Lettmann, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, 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

γ-ray spectroscopy of low-lying yrast and non-yrast states in neutron-rich 94, 95, 96Kr

NUCLEAR REACTIONS 1H(94Kr, p), (95Kr, p)(95Kr, np), (97Rb, 2p), (96Kr, p), (96Kr, np), (97Rb, n2p), E≈180 MeV/nucleon [secondary beams from 9Be(238U, X), E=345 MeV/nucleon primary reaction]; measured reaction products, Eγ, Iγ, Ep, Ip, pp-coin, gγ∓coin, pγ-coin. 94,95,96Kr; deduced levels, J, π, T1/2 of isomer and levels in 95Kr. Comparison to five-dimensional collective Hamiltonian (5DCH) beyond-mean-field model and mapped IBM calculations. Beam delivered via the ZeroDegree spectrometer to the Euroball RIKEN Cluster Array (EURICA) at RIBF-RIKEN.

doi: 10.1103/PhysRevC.105.024302
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2021TU02      Phys.Rev. C 103, 044306 (2021)

A.Turturica, C.Costache, P.Petkov, J.-P.Delaroche, M.Girod, J.Libert, G.Cata-Danil, S.Pascu, C.Mihai, M.Boromiza, D.Bucurescu, C.Clisu, D.Filipescu, N.M.Florea, I.Gheorghe, A.Ionescu, R.Lica, N.M.Marginean, R.Marginean, R.E.Mihai, A.Mitu, A.Negret, C.R.Nita, A.Olacel, A.Oprea, T.Sava, C.Sotty, L.Stan, I.Stiru, R.Suvaila, S.Toma, G.V.Turturica, S.Ujeniuc

Collective properties of neutron-deficient Nd isotopes: Lifetime measurements of the yrast states in 136Nd

NUCLEAR REACTIONS 124Te(16O, 4n), E=80 MeV; measured Eγ, Iγ, γγ-coin, half-lives of levels by recoil distance Doppler shift (RDDS) and Doppler-shift attenuation (DSA) methods and analysis by differential decay curve method (DDCM) using ROSPHERE array at the tandem accelerator facility of IFINHH-Bucharest-Magurele. 136Nd; deduced levels, J, π, bands, B(E2). Comparison with five-dimensional collective Hamiltonian (5DCH) calculations with D1S Gogny force. Systematics of energies of ground state and γ bands, and other observables in 130,132,134,136,138,140Nd.

NUCLEAR STRUCTURE 130,132,134,136,138,140Nd; calculated potential energy surfaces (PES) in (β, γ) plane, mean β and γ deformations, moments of inertia for yrast bands, B(E2), even-odd staggering parameter, spectroscopic quadrupole moments, charge radii and isotope shifts, ρ2(E0) rates. Five-dimensional collective Hamiltonian (5DCH) calculations with D1S Gogny force. Comparison with experimental data.

doi: 10.1103/PhysRevC.103.044306
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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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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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2018BE10      Phys.Rev. C 97, 064310 (2018)

F.L.Bello Garrote, A.Gorgen, C.Mihai, T.Abraham, L.Crespo Campo, J.-P.Delaroche, D.Filipescu, N.M.Florea, I.Gheorghe, D.G.Ghita, M.Girod, T.Glodariu, K.Hadynska-Klek, M.Klintefjord, J.Libert, R.Lica, T.Marchlewski, N.Marginean, R.Marginean, I.Mitu, A.Negret, C.R.Nita, F.Nowacki, A.Olacel, S.Pascu, T.Renstrom, E.Sahin, S.Siem, J.Srebrny, A.Stolarz, L.Stroe, S.Toma, T.G.Tornyi, A.Tucholski

Lifetime measurements in 138Nd

NUCLEAR REACTIONS 123Sb(19F, 4n), E=68 MeV; measured Eγ, Iγ, γγ-coin, half-lives of excited levels by recoil-distance Doppler shift technique using the ROSPHERE array at IFIN-HH, Bucharest. 138Nd; deduced levels, J, π, B(E1), B(E2), configurations; calculated Potential energy surface (PES) for the ground-state. Comparison with large-scale shell model, and constrained Hartree-Fock-Bogoliubov calculations with the Gogny D1S interaction. Discussed onset of collectivity in Nd isotopes below the N=82 shell closure from B(E2) systematics in 132,134,136,138,140Nd, 136Ce, 140,142Sm.

doi: 10.1103/PhysRevC.97.064310
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2018GA18      Phys.Rev. C 97, 064317 (2018)

L.Gaudefroy, S.Peru, N.Arnal, J.Aupiais, J.-P.Delaroche, M.Girod, J.Libert

Impact of Coriolis mixing on a two-quasi-neutron isomer in 164Gd100 and other N=100 isotones

RADIOACTIVITY 252Cf(SF); measured fission fragments, Eγ, Iγ, (fragment)γ- and γγ-coin, half-life of a 4- isomer in 164Gd using a fission chamber consisting of a metalized polyethylene terephtalate film for detection of fission fragments, and an array of eight HPGe detectors for γ rays at CEA, DAM, DIF facility. 164Gd; deduced levels, J, π, 4- isomer, configuration. 160Nd, 162Sm, 164Gd, 166Dy, 168Er, 170Yb, 172Hf; calculated levels, J, π, T1/2 of 4- isomers, E1+M2+E3 admixtures in the γ transition from the 4- isomeric states, and compared with experimental data. Calculations involved K-mixing on top of axially symmetric-deformed QRPA approach with Gogny D1M interaction for excited states, and five-dimensional collective Hamiltonian 5DCH approach for ground states.

doi: 10.1103/PhysRevC.97.064317
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2018SI26      Phys.Rev.Lett. 121, 192501 (2018)

P.Singh, W.Korten, T.W.Hagen, A.Gorgen, L.Grente, M.-D.Salsac, F.Farget, E.Clement, G.de France, T.Braunroth, B.Bruyneel, I.Celikovic, O.Delaune, A.Dewald, A.Dijon, J.-P.Delaroche, M.Girod, M.Hackstein, B.Jacquot, J.Libert, J.Litzinger, J.Ljungvall, C.Louchart, A.Gottardo, C.Michelagnoli, C.Muller-Gatermann, D.R.Napoli, T.Otsuka, N.Pillet, F.Recchia, W.Rother, E.Sahin, S.Siem, B.Sulignano, T.Togashi, Y.Tsunoda, Ch.Theisen, J.J.Valiente-Dobon

Evidence for Coexisting Shapes through Lifetime Measurements in 98Zr

NUCLEAR REACTIONS 9Be(238U, X)98Zr, E=6.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced level lifetimes, B(E2) values. Comparison with available data. Recoil-distance Doppler shift method.

doi: 10.1103/PhysRevLett.121.192501
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2017DO01      Phys.Lett. B 766, 334 (2017)

D.T.Doherty, J.M.Allmond, R.V.F.Janssens, W.Korten, S.Zhu, M.Zielinska, D.C.Radford, A.D.Ayangeakaa, B.Bucher, J.C.Batchelder, C.W.Beausang, C.Campbell, M.P.Carpenter, D.Cline, H.L.Crawford, H.M.David, J.P.Delaroche, C.Dickerson, P.Fallon, A.Galindo-Uribarri, F.G.Kondev, J.L.Harker, A.B.Hayes, M.Hendricks, P.Humby, M.Girod, C.J.Gross, M.Klintefjord, K.Kolos, G.J.Lane, T.Lauritsen, J.Libert, A.O.Macchiavelli, P.J.Napiorkowski, E.Padilla-Rodal, R.C.Pardo, W.Reviol, D.G.Sarantites, G.Savard, D.Seweryniak, J.Srebrny, R.Varner, R.Vondrasek, A.Wiens, E.Wilson, J.L.Wood, C.Y.Wu

Triaxiality near the 110Ru ground state from Coulomb excitation

NUCLEAR REACTIONS 208Pb(110Ru, 110Ru'), E=430 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energy spectrum, B(E2) using GOSIA fit of the experimental data, level scheme, J, π, triaxial deformation. Comparison with available data.

doi: 10.1016/j.physletb.2017.01.031
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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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2017KL01      Phys.Rev. C 95, 024312 (2017)

M.Klintefjord, J.Ljungvall, A.Gorgen, S.M.Lenzi, F.L.Bello Garrote, A.Blazhev, E.Clement, G.de France, J.-P.Delaroche, P.Desesquelles, A.Dewald, D.T.Doherty, C.Fransen, A.Gengelbach, G.Georgiev, M.Girod, A.Goasduff, A.Gottardo, K.Hadynska-Klek, B.Jacquot, T.Konstantinopoulos, A.Korichi, A.Lemasson, J.Libert, A.Lopez-Martens, C.Michelagnoli, A.Navin, J.Nyberg, R.M.Perez-Vidal, S.Roccia, E.Sahin, I.Stefan, A.E.Stuchbery, M.Zielinska, D.Barrientos, B.Birkenbach, A.Boston, L.Charles, M.Ciemala, J.Dudouet, J.Eberth, A.Gadea, V.Gonzalez, L.Harkness-Brennan, H.Hess, A.Jungclaus, W.Korten, R.Menegazzo, D.Mengoni, B.Million, A.Pullia, D.Ralet, F.Recchia, P.Reiter, M.D.Salsac, E.Sanchis, O.Stezowski, Ch.Theisen, J.J.Valiente Dobon

Measurement of lifetimes in 62, 64Fe, 61, 63Co, and 59Mn

NUCLEAR REACTIONS 64Ni(238U, X), E=6.5 MeV/nucleon; measured ΔE-E energy spectrum for target-like reaction products, mass-over-charge ratio of the ions from TOF, Eγ, Iγ, (recoil ions)γ-coin, level half-lives using recoil distance Doppler shift (RDDS) method using large-acceptance variable mode spectrometer VAMOS++, and AGATA array, and Orsay universal plunger system (OUPS) at GANIL facility. 62,64Fe, 61,63Co, 59Mn; deduced levels, J, π, B(E2). Comparison with previous experimental results, with large-scale shell-model calculations, and with beyond-mean-field CHFB+5DCH calculations using Gogny D1S interaction.

doi: 10.1103/PhysRevC.95.024312
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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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2016CL01      Phys.Rev.Lett. 116, 022701 (2016)

E.Clement, M.Zielinska, A.Gorgen, W.Korten, S.Peru, J.Libert, H.Goutte, S.Hilaire, B.Bastin, C.Bauer, A.Blazhev, N.Bree, B.Bruyneel, P.A.Butler, J.Butterworth, P.Delahaye, A.Dijon, D.T.Doherty, A.Ekstrom, C.Fitzpatrick, C.Fransen, G.Georgiev, R.Gernhauser, H.Hess, J.Iwanicki, D.G.Jenkins, A.C.Larsen, J.Ljungvall, R.Lutter, P.Marley, K.Moschner, P.J.Napiorkowski, J.Pakarinen, A.Petts, P.Reiter, T.Renstrom, M.Seidlitz, B.Siebeck, S.Siem, C.Sotty, J.Srebrny, I.Stefanescu, G.M.Tveten, J.Van de Walle, M.Vermeulen, D.Voulot, N.Warr, F.Wenander, A.Wiens, H.De Witte, K.Wrzosek-Lipska

Spectroscopic Quadrupole Moments in 96, 98Sr: Evidence for Shape Coexistence in Neutron-Rich Strontium Isotopes at N=60

NUCLEAR REACTIONS 109Ag, 120Sn(96Sr, 96Sr'), E=275 MeV;60Ni, 208Pb(98Sr, 98Sr'), E=276 MeV; measured reaction products, Eγ, Iγ. 96,98Sr; deduced B(E2) and B(M1)values, spectroscopic quadrupole moments. Comparison with beyond-mean-field calculations using the Gogny D1S interaction, least squares fitting code GOSIA.

NUCLEAR STRUCTURE 96,98Sr; calculated B(E2) values with the Gogny D1S interaction in a five-dimensional collective Hamiltonian (5DCH) formalism.

doi: 10.1103/PhysRevLett.116.022701
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2016KL05      Phys.Rev. C 93, 054303 (2016)

M.Klintefjord, K.Hadynska-Klek, A.Gorgen, C.Bauer, F.L.Bello Garrote, S.Bonig, B.Bounthong, A.Damyanova, J.-P.Delaroche, V.Fedosseev, D.A.Fink, F.Giacoppo, M.Girod, P.Hoff, N.Imai, W.Korten, A.-C.Larsen, J.Libert, R.Lutter, B.A.Marsh, P.L.Molkanov, H.Naidja, P.Napiorkowski, F.Nowacki, J.Pakarinen, E.Rapisarda, P.Reiter, T.Renstrom, S.Rothe, M.D.Seliverstov, B.Siebeck, S.Siem, J.Srebrny, T.Stora, P.Thole, T.G.Tornyi, G.M.Tveten, P.Van Duppen, M.J.Vermeulen, D.Voulot, N.Warr, F.Wenander, H.De Witte, M.Zielinska

Structure of low-lying states in 140Sm studied by Coulomb excitation

NUCLEAR REACTIONS 94Mo(140Sm, 140Sm'), (140Sm, 94Mo'), E=2.85 MeV/nucleon, [secondary 140Sm beam from Ta(p, X), E=1.4 GeV reaction at ISOLDE-CERN using RILIS, REXTRAP and EBIS]; measured scattered 140Sm and 94Mo particles, Eγ, Iγ, (particle)γ-coin, γ-yields using MINIBALL array for γ rays and DSSSD detectors for particle detection, γ spectra with laser on and off, γ-ray angular distributions. 140Sm; deduced E2 matrix elements, B(E2), spectroscopic quadrupole moment for the first two 2+ and the first 4+ states using coupled channel code GOSIA and normalized to γ-ray yield for first 2+ state in 94Mo target, and to known half-life for the first 2+ in 140Sm. Comparison with theoretical calculations using beyond-mean-field model with Gogny D1S interaction, shell model, interacting boson approximation (IBA), and E(5) symmetry. Calculated potential energy surface in (β, γ) plane for 140Sm. 95Mo; measured Iγ yield for 3/2+ to 5/2+ ground-state transition.

doi: 10.1103/PhysRevC.93.054303
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2016LI37      Eur.Phys.J. A 52, 197 (2016)

J.Libert, J.-P.Delaroche, M.Girod

Five-dimensional collective Hamiltonian with the Gogny force: An ongoing saga

NUCLEAR STRUCTURE 238U; calculated Thouless-Valatin dynamical contribution and Inglis-Belyaev moments of inertia vs quadrupole deformation, positive parity collective levels, yrast and vibrational bands for normal and superdeformed shapes. 192Hg; calculated kinetic moment of inertia vs angular momentum. 194Pb; calculated positive parity levels, J, π for different deformations. 226,228,230,232,234,236Th, 228,230,232,234,236,238,240,242,244,246U, 232,234,236,238,240,242,244,246Pu, 238,240,242,244,246,248,250Cm, 238,240,242,244,246,248,250,252Cf, 238,240,242,244,246,248,250Fm, 250,252,254No; calculated excited levels, deformation, mass excess, shape isomers. Z=2-102; calculated B(E2), yrast 2+ excitation energies. Z=16-98; calculated 0+, 2+, 3+ members of γ-bands energy, Five-dimensional collective Hamiltonian (5DCH) with Gogny force. Compared with available data.

doi: 10.1140/epja/i2016-16197-7
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2015BE25      Phys.Rev. C 92, 024317 (2015)

F.L.Bello Garrote, A.Gorgen, J.Mierzejewski, C.Mihai, J.P.Delaroche, M.Girod, J.Libert, E.Sahin, J.Srebrny, T.Abraham, T.K.Eriksen, F.Giacoppo, T.W.Hagen, M.Kisielinski, M.Klintefjord, M.Komorowska, M.Kowalczyk, A.C.Larsen, T.Marchlewski, I.O.Mitu, S.Pascu, S.Siem, A.Stolarz, T.G.Tornyi

Lifetime measurement for the 2+1 state in 140Sm and the onset of collectivity in neutron-deficient Sm isotopes

NUCLEAR REACTIONS 124Te(20Ne, 4n), E=82 MeV; measured Eγ, Iγ, γγ-coin, lifetime of the first 2+ state by recoil-distance Doppler shift technique using Koln-Bucharest Plunger device coupled to the EAGLE spectrometer at Heavy Ion Laboratory of the University of Warsaw. 140Sm; deduced levels, B(E2). Systematics of energies and B(E2) of first 2+ states, and E(4+)/E(2+) in 134,136,138,140,142,144,146,148,150,152,154Sm. 141Sm, 197Au; observed γ. Fit of B(E2) and E(2+) with modified Grodzins formula. Comparison with calculations based on a mapped collective Hamiltonian in five quadrupole coordinates (5DCH) and the Gogny D1S interaction.

doi: 10.1103/PhysRevC.92.024317
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2013CO23      Phys.Rev. C 88, 044311 (2013)

A.Corsi, J.-P.Delaroche, A.Obertelli, T.Baugher, D.Bazin, S.Boissinot, F.Flavigny, A.Gade, M.Girod, T.Glasmacher, G.F.Grinyer, W.Korten, J.Libert, J.Ljungvall, S.McDaniel, A.Ratkiewicz, A.Signoracci, R.Stroberg, B.Sulignano, D.Weisshaar

Collectivity of light Ge and As isotopes

NUCLEAR REACTIONS 9Be, 197Au(66Ge, 66Ge'), (67As, 67As'), (68Se, 67As), [secondary cocktail beam of 66Be, 67As, 68Se from 9Be(78Kr, X), E=150 meV/nucleon primary reaction], E=70 MeV/nucleon; measured particle spectra, Eγ, Iγ, (particle)γ-coin, Coulomb excitation and inelastic scattering cross sections at NSCL, MSU facility. SeGA array for γ-ray detection. 66Ge, 67As; deduced levels, J, π, B(E2). Comparison with shell-model calculations, and with earlier experimental results.

NUCLEAR STRUCTURE 64,66,68,70,72Ge; calculated potential energy surface (PES) contours in (β, γ) plane, spectroscopic quadrupole moments, staggering parameter and branching ratios using shell model for first and second 2+ states. 65,67,69As; calculated levels, J, π, spectroscopic quadrupole moments of low-lying negative-parity states using shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.88.044311
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2013LO04      Phys.Rev. C 87, 054302 (2013)

C.Louchart, A.Obertelli, A.Gorgen, W.Korten, D.Bazzacco, B.Birkenbach, B.Bruyneel, E.Clement, P.J.Coleman-Smith, L.Corradi, D.Curien, G.de Angelis, G.de France, J.-P.Delaroche, A.Dewald, F.Didierjean, M.Doncel, G.Duchene, J.Eberth, M.N.Erduran, E.Farnea, C.Finck, E.Fioretto, C.Fransen, A.Gadea, M.Girod, A.Gottardo, J.Grebosz, T.Habermann, M.Hackstein, T.Huyuk, J.Jolie, D.Judson, A.Jungclaus, N.Karkour, S.Klupp, R.Krucken, A.Kusoglu, S.M.Lenzi, J.Libert, J.Ljungvall, S.Lunardi, G.Maron, R.Menegazzo, D.Mengoni, C.Michelagnoli, B.Million, P.Molini, O.Moller, G.Montagnoli, D.Montanari, D.R.Napoli, R.Orlandi, G.Pollarolo, A.Prieto, A.Pullia, B.Quintana, F.Recchia, P.Reiter, D.Rosso, W.Rother, E.Sahin, M.-D.Salsac, F.Scarlassara, M.Schlarb, S.Siem, P.P.Singh, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, B.Sulignano, S.Szilner, Ch.Theisen, C.A.Ur, J.J.Valiente-Dobon, M.Zielinska

Collective nature of low-lying excitations in 70, 72, 74Zn from lifetime measurements using the AGATA spectrometer demonstrator

NUCLEAR REACTIONS 238U(76Ge, X), E=577 MeV; measured Eγ, Iγ, (ion)γ-coin, level half-lives of first 2+, 4+ and 6+ states by recoil-distance Doppler shift method using a plunger device, AGATA array and PRISMA magnetic spectrometer at INFN, Legnaro facility. 70,72,74Zn, 76Ge; deduced levels, J, π, B(E2). Comparison with previous experimental studies, and with the state-of-the-art shell-model calculations. Discussed need for new measurements of level half-lives.

doi: 10.1103/PhysRevC.87.054302
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2011DA08      Phys.Rev. C 83, 054312 (2011)

J.M.Daugas, I.Matea, J.-P.Delaroche, M.Pfutzner, M.Sawicka, F.Becker, G.Belier, C.R.Bingham, R.Borcea, E.Bouchez, A.Buta, E.Dragulescu, G.Georgiev, J.Giovinazzo, M.Girod, H.Grawe, R.Grzywacz, F.Hammache, F.Ibrahim, M.Lewitowicz, J.Libert, P.Mayet, V.Meot, F.Negoita, F.de Oliveira Santos, O.Perru, O.Roig, K.Rykaczewski, M.G.Saint-Laurent, J.E.Sauvestre, O.Sorlin, M.Stanoiu, I.Stefan, Ch.Stodel, Ch.Theisen, D.Verney, J.Zylicz

β-decay measurements for N > 40 Mn nuclei and inference of collectivity for neutron-rich Fe isotopes

RADIOACTIVITY 58,59,60,61Ti, 61,62,63,64V, 63,64,65,66Cr, 64,65,66,67,68,69Mn, 67,68,69,70,71Fe, 69,70,71,72,73,74Co(β-)[from 86Kr(Ta, X), E=57.8 MeV/nucleon]; measured β spectra, Eγ, Iγ, βγ-coin, half-lives. Comparison with previous half-life measurements. 67Mn(β-n); measured beta-delayed neutron emission probability. 66,67,68Fe; deduced levels, J, π, multipolarity. Comparison with mean-field calculations.

NUCLEAR STRUCTURE 66,68Fe; calculated levels, J, π, PES, neutron single-particle levels. Application to 67Fe structure. Beyond-mean-field calculations with the Gogny D1S force. Systematics of first 2+ states in N=24-50 Fe isotopes.

doi: 10.1103/PhysRevC.83.054312
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2011DI04      Acta Phys.Pol. B42, 829 (2011)

A.Dijon, J.Ljungvall, E.Clement, G.de France, P.Van Isacker, A.Gorgen, A.Obertelli, W.Korten, J.P.Delaroche, A.Dewald, A.Gadea, L.Gaudefroy, M.Girod, M.Hackstein, J.Libert, D.Mengoni, T.Pissula, F.Recchia, M.Rejmund, W.Rother, E.Sahin, C.Schmitt, A.Shrivastava, J.J.Valiente-Dobon, K.O.Zell, M.Zielinska

Lifetime Measurements in Neutron-rich Fe and Co Isotopes

NUCLEAR REACTIONS 64Ni(238U, X)62Fe/64Fe/63Co/65Co, E=6.5 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced lifetimes of yrast states, B(E2).

doi: 10.5506/APhysPolB.42.829
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2011WI12      J.Phys.:Conf.Ser. 312, 092065 (2011)

A.N.Wilson, A.Korichi, S.Siem, A.Astier, D.Bazzacco, P.Bednarczyk, M.H.Bergstrom, S.Chmel, D.M.Cullen, P.M.Davidson, A.Gorgen, F.Hannachi, H.Hubel, N.Kintz, T.Lauritsen, A.Lopez-Martens, S.Lunardi, S.Naguleswaran, B.M.Nyako, M.Rejmund, G .Schonwasser, C.Schuck, J.F.Sharpey-Schafer, J.Timar, R.Wadsworth, J.Libert

Two-Particle Separation Energies in the Superdeformed Well

NUCLEAR STRUCTURE 190,192,194Hg, 192,194,196Pb; calculated superdeformed quasi-vacuum states using HFB with Skyrme and Gogny forces and GCM. 188,190,192,194,196Hg, 190,192,194,196,198Pb; calculated mass excess, 2n and 2p separation energies. Compared with data.

doi: 10.1088/1742-6596/312/9/092065
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2010DE02      Phys.Rev. C 81, 014303 (2010)

J.-P.Delaroche, M.Girod, J.Libert, H.Goutte, S.Hilaire, S.Peru, N.Pillet, G.F.Bertsch

Structure of even-even nuclei using a mapped collective Hamiltonian and the D1S Gogny interaction

NUCLEAR STRUCTURE A=2-250; analyzed charge radii, two-particle separation energies, correlation energies, excitation energies, transition matrix elements, deformation parameters, and transition strengths using the Hartree-Fock-Bogoliubov theory by the generator coordinate method and mapped onto a five-dimensional collective quadrupole Hamiltonian. Calculated properties of 1712 even-even nuclei.Evaluated performance of the CHFB+5DCH theory based on the Gogny D1S interaction.

doi: 10.1103/PhysRevC.81.014303
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2010LA17      Nucl.Phys. A845, 33 (2010)

H.Laftchiev, J.Libert, P.Quentin, T.L.Ha

A particle-number conserving description of rotational correlated states

doi: 10.1016/j.nuclphysa.2010.04.014
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2010LA18      J.Phys.:Conf.Ser. 205, 012005 (2010)

H.Laftchiev, J.Libert, P.Quentin, T.L.Ha

Higher Tamm-Dankoff approximation for rotational nuclear states

NUCLEAR STRUCTURE 192,194Pb; calculated moments of inertia, pairing strength using Cr.HTDA (Cranking version of Higher Tamm-Dankoff approximation). Compared with data.

doi: 10.1088/1742-6596/205/1/012005
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2010LI51      J.Phys.:Conf.Ser. 205, 012007 (2010)

J.Libert, J.-P.Delaroche, M.Girod, H.Goutte, S.Hilaire, S.Peru, N.Pillet, G.F.Bertsch

Microscopic study of low energy collective states in even-even nuclei: A prospective analysis of dynamical corrections to vibrational mass parameters

NUCLEAR STRUCTURE 110Ru; calculated levels, J, π, inertia moment, deformation. 150,152,154,156,158,160,162,164Gd;calculated low-lying levels, J, π, rotational band. Z=20-110; calculated even-even nuclei 0+, 2+ levels. GCM mapped onto 5-Dimensional Collective Quadrupole Hamiltonian with quadrupole constraints deduced from Cogny D1S force. Compared with data.

doi: 10.1088/1742-6596/205/1/012007
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2010LJ01      Phys.Rev. C 81, 061301 (2010)

J.Ljungvall, A.Gorgen, A.Obertelli, W.Korten, E.Clement, G.de France, A.Burger, J.-P.Delaroche, A.Dewald, A.Gadea, L.Gaudefroy, M.Girod, M.Hackstein, J.Libert, D.Mengoni, F.Nowacki, T.Pissulla, A.Poves, F.Recchia, M.Rejmund, W.Rother, E.Sahin, C.Schmitt, A.Shrivastava, K.Sieja, J.J.Valiente-Dobon, K.O.Zell, M.Zielinska

Onset of collectivity in neutron-rich Fe isotopes: Toward a new island of inversion?

NUCLEAR REACTIONS 64Ni(238U, X), E=6.5 MeV/nucleon; measured Eγ, Iγ, (recoil)γ-coin, γ(θ), half-lives of first 2+ states by RDDS method using the Exogam array. 62,64Fe; deduced B(E2). Z=24-30, N=32-42; systematics of energies and B(E2) of first 2+ states in even-even nuclei. Comparison with large-scale shell-model and Hartree-Fock-Bogolyubov based configuration-mixing calculations using the Gogny D1S interaction. New Island of inversion.

doi: 10.1103/PhysRevC.81.061301
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2010WI02      Phys.Rev.Lett. 104, 162501 (2010)

A.N.Wilson, A.Korichi, S.Siem, A.Astier, D.Bazzacco, P.Bednarczyk, M.H.Bergstrom, S.Chmel, D.M.Cullen, P.M.Davidson, A.Gorgen, F.Hannachi, H.Hubel, N.Kintz, T.Lauritsen, A.Lopez-Martens, S.Lunardi, S.Naguleswaran, B.M.Nyako, M.Rejmund, G.Schonwasser, C.Schuck, J.F.Sharpey-Schafer, J.Timar, R.Wadsworth, J.Libert

Two-Particle Separation Energy Trends in the Superdeformed Well

NUCLEAR REACTIONS 160Gd(34S, 4n), E=156 MeV; measured Eγ, Iγ, γγ-coin.; 190Hg deduced energy and J of superdeformed and normal states, two-proton separation energies, critical tests of nuclear models.

doi: 10.1103/PhysRevLett.104.162501
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2009GA41      Phys.Rev. C 80, 064313 (2009)

L.Gaudefroy, A.Obertelli, S.Peru, N.Pillet, S.Hilaire, J.-P.Delaroche, M.Girod, J.Libert

Collective structure of the N=40 isotones

NUCLEAR STRUCTURE 58Ar, 60Ca, 62Ti, 64Cr, 66Fe, 68Ni, 70Zn, 72Ge, 74Se, 76Kr, 78Sr, 80Zr, 82Mo; calculated single-particle energies, Nilsson diagrams, potential energy curves, neutron and proton pairing energy curves, excitation energies, spectroscopic quadrupole moments, and B(E2) using Hartree-Fock-Bogoliubov (HFB) approach using the Gogny D1S effective interaction Comparison with experimental data.

doi: 10.1103/PhysRevC.80.064313
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2009LE26      Phys.Rev. C 80, 044308 (2009)

M.Lebois, D.Verney, F.Ibrahim, S.Essabaa, F.Azaiez, M.C.Mhamed, E.Cottereau, P.V.Cuong, M.Ferraton, K.Flanagan, S.Franchoo, D.Guillemaud-Mueller, F.Hammache, C.Lau, F.Le Blanc, J.-F.Le Du, J.Libert, B.Mouginot, C.Petrache, B.Roussiere, L.Sagui, N.de Sereville, I.Stefan, B.Tastet

Experimental study of 84Ga beta decay: Evidence for a rapid onset of collectivity in the vicinity of 78Ni

RADIOACTIVITY 84gGa, 84mGa(β-), (β-n), 84Ge(β-)[from U(γ, X), E=0-50 MeV]; measured Eγ, Iγ, βγ-coin, half-lives. 84Ga, 84Ge, 84As, 83Ge; deduced levels, J, π, delayed-neutron emission probabilities, logft. 83Ge, 84As, 89,90,93,94,96Rb(β-); measured Eγ. PARRNe-ALTO facility. Implications for structure near doubly-magic 78Ni nucleus. Z=32-40 (even), N=52; N=42-54, Z=32; systematics of first 2+ and 4+ states.

NUCLEAR STRUCTURE 74,76,78,80,82,84Ge; calculated potential energy surfaces (PES) and B(E2) using HFB+GCM approach.

doi: 10.1103/PhysRevC.80.044308
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2009ZI01      Phys.Rev. C 80, 014317 (2009)

M.Zielinska, A.Gorgen, E.Clement, J.-P.Delaroche, M.Girod, W.Korten, A.Burger, W.Catford, C.Dossat, J.Iwanicki, J.Libert, J.Ljungvall, P.J.Napiorkowski, A.Obertelli, D.Pietak, R.Rodriguez-Guzman, G.Sletten, J.Srebrny, Ch.Theisen, K.Wrzosek

Shape of 44Ar: Onset of deformation in neutron-rich nuclei near 48Ca

NUCLEAR REACTIONS 109Ag(44Ar, 44Ar'), E=2.68 MeV/nucleon; 208Pb(44Ar, 44Ar'), E=3.68 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin, γ yields. 44Ar; deduced levels, B(E2) matrix elements, spectroscopic quadrupole moments. Comparisons with experimental data for neighboring A=42-46 Ar, S and Si nuclides and GCM(GOA), AMPGCM, and Shell model calculations.

NUCLEAR STRUCTURE 42Si, 44S, 42,44,46Ar; calculated potential energy surfaces, energies of first 2+ states, B(E2) and quadrupole moments using Hartree-Fock-Bogoliubov formalism with Gogny DIS interaction. 38,40,4244,46,48Ar; calculated mean-square charge radii using GCM(GOA) and spherical Skyrme SGII Hartree-Fock formalism. Comparisons with experimental data.

doi: 10.1103/PhysRevC.80.014317
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2007CA04      Eur.Phys.J. A 31, 141 (2007)

M.A.Cardona, D.Hojman, B.Roussiere, J.Libert, J.Genevey, J.Sauvage, the the ISOCELE and ISOLDE Collaborations

Low-spin states in 182Os and Kπ = 0+, 2+ excited bands

RADIOACTIVITY 182Ir(β+), (EC) [from Pt(p, xn) and subsequent decay]; measured Eγ, Iγ, E(ce), I(ce); deduced log ft. 182Os deduced levels, J, π, ICC. Level systematics in neighboring isotopes discussed.

doi: 10.1140/epja/i2006-10153-2
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2007GU09      Phys.Rev. C 75, 044303 (2007)

C.Guenaut, G.Audi, D.Beck, K.Blaum, G.Bollen, P.Delahaye, F.Herfurth, A.Kellerbauer, H.-J.Kluge, J.Libert, D.Lunney, S.Schwarz, L.Schweikhard, C.Yazidjian

High-precision mass measurements of nickel, copper, and gallium isotopes and the purported shell closure at N = 40

ATOMIC MASSES 57,60,64,65,66,67,68,69Ni, 65,66,67,68,69,70,71,72,73,74,76Cu, 63,64,65,68,69,70,71,72,73,74,75,76,77,78Ga; measured masses; analyzed the resulting mass surface for signs of magicity, compared the behavior of N=40 with that of the known magic numbers and with midshell behavior.

NUCLEAR STRUCTURE Z=28, 29, 31; analyzed two-neutron separation energies, pairing energies, masses, compared with mass models, found no evidence for shell closure at N=40.

doi: 10.1103/PhysRevC.75.044303
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2007LI14      Nucl.Phys. A786, 47 (2007)

J.Libert, B.Roussiere, J.Sauvage

Signs of dynamical effects for Cd, Sn, Te, Xe, Ba and Sm nuclear charge radii

NUCLEAR STRUCTURE Cd, Sn, Te, Xe, Ba, Sm; calculated radii, level energies, transitions B(E2), deformation. 98,130Cd, 116Sn, 116,118Te, 124,126Xe, 126Ba, 154Sm; calculated potential energy surfaces. Microscopic configuration mixing approach.

doi: 10.1016/j.nuclphysa.2007.01.089
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2006DE23      Nucl.Phys. A771, 103 (2006)

J.-P.Delaroche, M.Girod, H.Goutte, J.Libert

Structure properties of even-even actinides at normal and super deformed shapes analysed using the Gogny force

NUCLEAR STRUCTURE 226,228,230,232,234,236Th, 228,230,232,234,236,238,240,242U, 232,234,236,238,240,242,244,246Pu, 238,240,242,244,246,248,250Cm, 238,240,242,244,246,248,250,252,254,256Cf, 242,244,246,248,250,252,254,256,258Fm, 250,252,254,256,258,260,262No; calculated single-particle and pairing energies, potential energy surfaces, excitation energies, potential barrier heights, rotational bands kinetic moments of inertia, T1/2, J, π; deduced charge multipole moments. Hartree-Fock-Bogolyubov approach, Gogny force, comparison with data.

doi: 10.1016/j.nuclphysa.2006.03.004
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2004PR01      Nucl.Phys. A730, 59 (2004)

L.Prochniak, P.Quentin, D.Samsoen, J.Libert

A self-consistent approach to the quadrupole dynamics of medium heavy nuclei

NUCLEAR STRUCTURE 102Zr, 104Mo, 110Ru, 110Pd, 124Xe, 126Ba; calculated levels, J, π, deformation, B(E2). Self-consistent model, Skyrme forces.

doi: 10.1016/j.nuclphysa.2003.10.011
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2004QU01      Nucl.Phys. A734, 477 (2004)

P.Quentin, H.Laftchiev, D.Samsoen, I.N.Mikhailov, J.Libert

Pairing correlations in high spin states

NUCLEAR STRUCTURE 192Hg; calculated rotational bands moments of inertia, pairing correlation effects. Relativistic HFB and TDA approaches.

doi: 10.1016/j.nuclphysa.2004.01.130
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2003PR15      Acta Phys.Pol. B34, 2461 (2003)

L.Prochniak, P.Quentin, D.Samsoen, J.Libert

Quadrupole collective excitations in medium heavy transitional nuclei with in a selfconsistent approach with Skyrme forces

NUCLEAR STRUCTURE 102Zr, 104Mo, 110Ru, 110Pd, 124Xe, 126Ba; calculated levels, J, B(E2), collective features. Comparison with data.


2002GI11      Eur.Phys.J. A 15, 209 (2002)

M.Girod, J.Libert, J.P.Delaroche, P.Romain

Microscopic structure of superdeformed states in Th, U, Pu and Cm isotopes with Gogny force

NUCLEAR STRUCTURE 226,228,230,232,234Th, 230,232,234,236,238,240U, 240,242,244,246Pu, 242,244,246,248Cm; calculated normal and superdeformed level energies, collective features. Microscopic mean-field approach, Gogny force. Comparisons with data.

doi: 10.1140/epja/i2001-10256-2
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2002PI01      Nucl.Phys. A697, 141 (2002)

N.Pillet, P.Quentin, J.Libert

Pairing Correlations in an Explicitly Particle-Number Conserving Approach

NUCLEAR STRUCTURE 178Hf; calculated pair correlation energies vs quadrupole moment, total deformation energy, level energies and configurations. Particle-number conserving approach.

doi: 10.1016/S0375-9474(01)01240-4
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2001KH17      Nucl.Phys. A694, 103 (2001)

E.Khan, T.Suomijarvi, Y.Blumenfeld, V.G.Nguyen, N.Alamanos, F.Auger, E.Bauge, D.Beaumel, J.P.Delaroche, P.Delbourgo-Salvador, A.Drouart, S.Fortier, N.Frascaria, A.Gillibert, M.Girod, C.Jouanne, K.W.Kemper, A.Lagoyannis, V.Lapoux, A.Lepine-Szily, I.Lhenry, J.Libert, F.Marechal, J.M.Maison, A.Musumarra, S.Ottini-Hustache, P.Piattelli, S.Pita, E.C.Pollacco, P.Roussel-Chomaz, D.Santonocito, J.E.Sauvestre, J.A.Scarpaci, T.Zerguerras

Proton Scattering from the Unstable Nuclei 30S and 34Ar: Structural evolution along the sulfur and argon isotopic chains

NUCLEAR REACTIONS 1H(30S, 30S'), (32S, 32S'), E=53 MeV/nucleon; 1H(34Ar, 34Ar'), E=47 MeV/nucleon; measured recoil proton spectra, σ(E, θ). 30,32S, 34Ar deduced levels, J, π, deformation. Optical model analysis.

NUCLEAR STRUCTURE 30,32,34,36,38,40,42,44S, 34,36,38,40,42,44,46Ar; calculated proton and neutron radii, density distributions. Quasiparticle RPA, Skyrme interaction.

doi: 10.1016/S0375-9474(01)00981-2
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2001RO23      Yad.Fiz. 64, No 6, 1123 (2001); Phys.Atomic Nuclei 64, 1048 (2001)

B.Roussiere, F.Ibrahim, J.Libert, J.Sauvage, D.Verney, L.Cabaret, J.E.Crawford, J.Genevey, D.Hojman, G.Huber, A.Knipper, F.Le Blanc, J.K.P.Lee, G.Marguier, J.Oms, J.Pinard, A.Wojtasiewicz

Properties of the Low-Lying Levels in the Transitional Ir and Au Nuclei

NUCLEAR STRUCTURE 183,185,187,189,191,193Ir, 183,185,187,189,191,193,195,197Au; calculated levels, J, π, μ, quadrupole moments. Axial rotor plus one or two quasiparticles, comparisons with data.

doi: 10.1134/1.1383615
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2001SA44      Yad.Fiz. 64, No 6, 1210 (2001); Phys.Atomic Nuclei 64, 1134 (2001)

J.Sauvage, J.Libert, B.Roussiere, D.Verney, L.Cabaret, J.E.Crawford, J.Genevey, G.Huber, F.Ibrahim, F.Le Blanc, J.K.P.Lee, J.Oms, J.Pinard, and the ISOLDE Collaboration

Deformation Properties of the Neutron-Deficient Odd-A Pt and Hg Nuclei

NUCLEAR STRUCTURE 176,178,180,182,184,186,188,190,192,194,196,198Pt, 180,182,184,186,188,190,192,194,196,198,200Hg; analyzed level energies, radii, deformation. 179,181,183,185,187,191,193,195Pt, 189Os, 193Hg; calculated μ, quadrupole moments. Comparisons with data.

doi: 10.1134/1.1383630
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2001SC01      Phys.Rev. C63, 014604 (2001)

H.Scheit, F.Marechal, T.Glasmacher, E.Bauge, Y.Blumenfeld, J.P.Delaroche, M.Girod, R.W.Ibbotson, K.W.Kemper, J.Libert, B.Pritychenko, T.Suomijarvi

Proton Scattering by the Unstable Neutron-Rich Isotopes 42, 44Ar

NUCLEAR REACTIONS 1H(36Ar, 36Ar'), E=33.6 MeV/nucleon; 1H(42Ar, 42Ar'), E=33.0 MeV/nucleon; 1H(44Ar, 44Ar'), E=33.2 MeV/nucleon; measured excitation energy spectra, angular distributions. 36,42,44Ar(p, p), (p, p'), E(cm) ≈ 33 MeV/nucleon; deduced σ(θ). 42,44Ar deduced quadrupole deformation, B(E2). Secondary beams from 48Ca fragmentation. Comparison with coupled-channels calculations.

NUCLEAR STRUCTURE 36,40,42,44Ar; calculated radii, deformation. Microscopic collective models.

doi: 10.1103/PhysRevC.63.014604
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2001YU07      Ukr.J.Phys. 46, 21 (2001)

E.Kh.Yuldashbaeva, J.Libert, P.Quentin, M.Girod, B.K.Poluanov

Strong variations of adiabatic mass parameters

NUCLEAR STRUCTURE 110Cd, 148,150,152Gd, 238U; calculated pairing energies, mass parameters vs deformation.


2000SA58      Hyperfine Interactions 129, 303 (2000)

J.Sauvage, N.Boos, L.Cabaret, J.E.Crawford, H.T.Duong, J.Genevey, M.Girod, G.Huber, F.Ibrahim, M.Krieg, F.Le Blanc, J.K.P.Lee, J.Libert, D.Lunney, J.Obert, J.Oms, S.Peru, J.Pinard, J.C.Putaux, B.Roussiere, V.Sebastian, D.Verney, S.Zemlyanoi, J.Arianer, N.Barre, M.Ducourtieux, D.Forkel-Wirth, G.Le Scornet, J.Lettry, C.Richard-Serre, C.Veron, and the ISOLDE Collaboration

COMPLIS experiments: Collaboration for spectroscopy Measurements using a Pulsed Laser Ion Source

NUCLEAR MOMENTS 182,183,184,185,186,187,188,189,191,193Ir, 179,181,183,183m,185,185m,187,189Pt, 184,184m,191,193,195Au; measured hfs, isotope shifts by Resonance Ionization Spectroscopy (RIS); deduced μ, quadrupole moments, and changes in mean square charge radii, deformation parameter. Comparisons with model calculations.

doi: 10.1023/A:1012618001695
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1999LI38      Phys.Rev. C60, 054301 (1999)

J.Libert, M.Girod, J.-P.Delaroche

Microscopic Descriptions of Superdeformed Bands with Gogny Force: Configuration mixing calculations in the A ∼ 190 mass region

NUCLEAR STRUCTURE 190,192,194Hg, 192,194,196Pb, 196,198Po; calculated potential energy surfaces, superdeformed bands excitation energies, moments of inertia, transition quadrupole moments, related features. Constrained HFB calculations, Gogny force.

doi: 10.1103/PhysRevC.60.054301
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1999YU09      Phys.Lett. 461B, 1 (1999)

E.Kh.Yuldashbaeva, J.Libert, P.Quentin, M.Girod

Mass Parameters for Large Amplitude Collective Motion: A perturbative microscopic approach

NUCLEAR STRUCTURE 110Cd, 150Gd, 238U; calculated mass parameters, pairing energy vs deformation. Time-dependent HFB.

doi: 10.1016/S0370-2693(99)00836-9
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1997BA50      Int.J.Mod.Phys. E6, 89 (1997)

S.I.Bastrukov, J.Libert, I.V.Molodtsova

Elastodynamic Features of Nuclear Matter from Macroscopic Model of Giant Magnetic Resonances

NUCLEAR STRUCTURE A=40-220; calculated torsional moment of inertia, stiffness magnetic dipole resonances energy vs mass, B(M1). 208Pb calculated M1 resonance form factors. Macroscopic approach, collective model.

doi: 10.1142/S0218301397000068
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1997GI06      Z.Phys. A358, 177 (1997)

M.Girod, J.P.Delaroche, J.F.Berger, S.Peru, J.Libert

Microscopic Descriptions of Collective SD Bands in the A = 190 Mass Rgion with the Gogny Force

NUCLEAR STRUCTURE 190,192,194Hg, 194Pb; calculated yrast superdeformed bands moments of inertia. 194Pb calculated excited superdeformed bands. HFB, generator coordinate method, Gaussian overlap approximation, Gogny force.

doi: 10.1007/s002180050298
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1995SA42      Nucl.Phys. A592, 221 (1995)

J.Sauvage, D.Hojman, F.Ibrahim, B.Roussiere, P.Kilcher, F.Le Blanc, J.Oms, J.Libert, and the ISOCELE Collaboration

The Low-Spin States in the Doubly Odd 182Ir Nucleus and the Influence of the Proton-Neutron Interaction

RADIOACTIVITY 182Pt(β+), (EC) [from Pt(p, xn)182Au(β+-, EC-decay), on-line mass separation]; measured Eγ, Iγ, γγ(t), (X-ray)γ(t). 182Ir deduced levels, J, π, γ-multipolarity. Hyperpure Ge detector. Semi-microscopic rotor-plus-two-quasiparticle model, Hartree-Fock+BCS approximation.

doi: 10.1016/0375-9474(95)00293-A
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1994DE25      Phys.Rev. C50, 2332 (1994)

J.P.Delaroche, M.Girod, G.Bastin, I.Deloncle, F.Hannachi, J.Libert, M.G.Porquet, C.Bourgeois, D.Hojman, P.Kilcher, A.Korichi, F.Le Blanc, N.Perrin, B.Roussiere, J.Sauvage, H.Sergolle

Evidence for γ Vibrations and Shape Evolutions Through the Transitional 184,186,188,190Hg Nuclei

NUCLEAR STRUCTURE 184,186,188,190Hg; calculated levels, potential energy surfaces, B(λ). Constrained HFB calculations.

RADIOACTIVITY 190,190m,186,186mTl(β+), (EC) [from 197Au(3He, xn), E=280 MeV]; measured γγ(t), Eγ, Iγ. 190,186Hg deduced levels, J, π, B(λ), band structure. Constrained HFB calculations.

doi: 10.1103/PhysRevC.50.2332
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1994GI05      Phys.Lett. 325B, 1 (1994)

M.Girod, J.P.Delaroche, J.F.Berger, J.Libert

Self-Consistent Cranking Hartree-Fock-Bogoliubov Description of Superdeformed Rotational States in 194Hg with the Gogny Force

NUCLEAR STRUCTURE 194Hg; calculated yrast superdeformed band dynamic moment of inertia. Self-consistent cranking HFB calculations, Gogny force.

doi: 10.1016/0370-2693(94)90062-0
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1994IB01      Z.Phys. A350, 9 (1994)

F.Ibrahim, P.Kilcher, B.Roussiere, J.Sauvage, J.Genevey, A.Gizon, A.Knipper, G.Marguier, D.Barneoud, R.Beraud, G.Cata-Danil, J.Blachot, I.Deloncle, R.Duffait, A.Emsallem, D.Hojman, A.J.Kreiner, F.Le Blanc, J.Libert, J.Oms

Spin and Parity of Isomeric and Ground States of the Doubly-Odd Nucleus 184Au

RADIOACTIVITY 184Hg(β+), (EC) [from 148Sm(40Ar, X), E=185 MeV]; measured γγ(t), γ(X-ray)(t), Eγ, Iγ, E X-ray, I X-ray. 184Au deduced levels, J, π, isomer T1/2.

doi: 10.1007/BF01285045
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1994MI12      Nucl.Phys. A574, 593 (1994)

I.N.Mikhailov, E.Kh.Yuldashbaeva, J.Piperova, J.Libert

Towards a New Model of Nuclear Fusion

NUCLEAR REACTIONS 16O(16O, X), 40Ca(40Ca, X), 58Ni(58Ni, X), 90Zr(90Zr, X), 208Pb(208Pb, X), E not given; calculated diabatic, adiabatic colliding pair properties. Generalized virial theorems.

doi: 10.1016/0375-9474(94)90246-1
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1993LI09      Nucl.Phys. A553, 523c (1993)

J.Libert, J.F.Berger, J.P.Delaroche, M.Girod

Microscopic Description of Superdeformed Bands in 190,192,194Hg

NUCLEAR STRUCTURE 190,192,194Hg; calculated levels, normal, superdeformation bands. Microscopic model.

doi: 10.1016/0375-9474(93)90652-E
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1992GI01      Phys.Rev. C45, R1420 (1992)

M.Girod, J.P.Delaroche, J.Libert, I.Deloncle

Ab Initio Calculation of Superdeformed Bands in 192Hg

NUCLEAR STRUCTURE 192Hg; calculated levels, kinematic moment of inertia, B(λ); deduced superdeformed bands. Griffin-Hill-Wheeler equation, Gaussian overlap approximation, constrained Hartree-Fock-Bogoliubov calculation based potential, tensor of inertia, Gogny's force.

doi: 10.1103/PhysRevC.45.R1420
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1992ME01      Phys.Rev. C45, 233 (1992)

M.Meyer, N.Redon, P.Quentin, J.Libert

Superdeformed Single-Particle Orbitals in the A = 190 Region from Hartree-Fock Plus BCS Calculations

NUCLEAR STRUCTURE 192,194,196,198,200Pb, 194,192,190Hg; calculated superdeformed nucleon state components, spectra; deduced particle number symmetry restoration role. Self-consistent axial Hartree-Fock plus BCS.

doi: 10.1103/PhysRevC.45.233
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1989DE35      Phys.Lett. 232B, 145 (1989)

J.P.Delaroche, M.Girod, J.Libert, I.Deloncle

Collective Structure of Iπ = 0+ Shape Isomers in the 190,192,194Hg Isotopes

NUCLEAR STRUCTURE 190,192,194Hg; calculated levels, potential energy surfaces; deduced shape isomers. Griffin-Hill-Wheeler equation, gaussian overlap approximation.

doi: 10.1016/0370-2693(89)91675-4
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1989DE44      Phys.Lett. 233B, 16 (1989)

I.Deloncle, J.Libert, L.Bennour, P.Quentin

The Low Energy Spectra of Heavy Transitional Even Nuclei from an Effective Nucleon-Nucleon Interaction

NUCLEAR STRUCTURE 74Ge, 76Se, 110Cd, 186Pt; calculated levels, potential energy surfaces. Adiabatic, time-dependent HFB theory.

doi: 10.1016/0370-2693(89)90608-4
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1988QU03      J.Phys.(London) G14, Supplement S47 (1988)

P.Quentin, L.Bennour, J.Libert, M.-G.Porquet, D.E.Medjadi, M.Meyer

Low-Energy Coupling of Individual and Collective Degrees of Freedom: A general microscopic approach

NUCLEAR STRUCTURE 234Pa, 238Np, 240,242,244Am, 248,250Bk; calculated levels; deduced coupling effects. Microscopic model.

doi: 10.1088/0305-4616/14/S/005
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1987BE51      Nucl.Phys. A465, 35 (1987)

L.Bennour, J.Libert, M.Meyer, P.Quentin

A Self-Consistent Description of the Spectroscopic Properties of Odd-Odd Nuclei

NUCLEAR STRUCTURE 172Yb, 174Hf, 158Gd, 162Dy; calculated n, p single particle energies. 172,174Yb, 174,176Hf; calculated charge radii, quadrupole moments, charge distribution deformation parameter. 174Lu, 238Np, 160Tb; calculated levels, bandhead energies. Rotor plus two-quasiparticle model.

doi: 10.1016/0375-9474(87)90298-3
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1986DE28      Phys.Rev. C34, 1706 (1986)

J.de Bettencourt, Ch.Briancon, J.Libert, J.P.Thibaud, R.J.Walen, A.Gizon, M.Meyer, Ph.Quentin

Coulomb Excitation Study of 235U: Assessment of theoretical quasiparticle states

NUCLEAR REACTIONS 235U(84Kr, 84Kr'), E=370, 450 MeV; measured Eγ, Iγ, γγ-, γ(particle)-coin, Coulomb excitation. 235U deduced levels, band structure, J, π, γ-branching, Nilsson assigments, intraband B(λ), ground state band magnetic dipole, quadrupole moments. Enriched target, γ-ray spectroscopy. Rotor-plus-quasiparticle approach.

doi: 10.1103/PhysRevC.34.1706
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1986ME15      Phys.Lett. 181B, 185 (1986)

D.E.Medjadi, P.Quentin, M.Meyer, J.Libert

A Microscopic Approach to the Coupling of Collective and Individual Degrees of Freedom to Describe Low Energy Excitations of Odd-Even Nuclei

NUCLEAR STRUCTURE 107,109,110,111Cd; calculated levels. Microscopic approach, collective, individual degrees of freedom coupling.

doi: 10.1016/0370-2693(86)90028-6
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1982LI01      Phys.Rev. C25, 571 (1982)

J.Libert, P.Quentin

Self-Consistent Description of Heavy Nuclei. I. Static Properties of Some Even Nuclei

NUCLEAR STRUCTURE 224Ra, 230,232Th, 232,234,236,238U, 238,240,244Pu, 244,248Cm, 252Cf, 258Fm, 260Rf; calculated binding energy, charge radii, quadrupole, hexadecapole moments, single particle energies. Hartree-Fock plus BCS, Skyrme forces.

doi: 10.1103/PhysRevC.25.571
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1982LI02      Phys.Rev. C25, 586 (1982)

J.Libert, M.Meyer, P.Quentin

Self-Consistent Description of Heavy Nuclei. II. Spectroscopic Properties of Some Odd Nuclei

NUCLEAR STRUCTURE 229,231,233Th, 237,239,241Pu, 233,235,237,239U, 233,235,237,239Np; calculated levels. 229Th, 233,235U, 239,241Pu, 231,233Pa, 237,239Np, 241Am; calculated μ, quadrupole moment. 229Th, 233U, 231Pa, 237Np, 239Pu calculated B(λ), δ. 235U calculated B(λ). Rotor plus quasiparticle model, self-consistent approach.

doi: 10.1103/PhysRevC.25.586
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1982LI11      Z.Phys. A306, 315 (1982)

J.Libert, P.Quentin

A General Solution of the Bohr Collective Hamiltonian

NUCLEAR STRUCTURE 154,156,158Er, 232Th; calculated levels, potential energy surfaces. Collective Hamiltonian.

doi: 10.1007/BF01432372
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1980LI15      Phys.Lett. B95, 175 (1980)

J.Libert, M.Meyer, P.Quentin

Spectroscopic Properties of 237,239Pu Fission Isomers from Self-Consistent Calculations

NUCLEAR STRUCTURE 237,239Pu; calculated levels, B(λ), fission isomer spectroscopic properties. Rotor plus quasiparticle model, self-consistent single particle states.

doi: 10.1016/0370-2693(80)90463-3
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1980SI16      Z.Phys. A298, 121 (1980)

R.S.Simon, F.Folkmann, C.Briancon, J.Libert, J.P.Thibaud, R.J.Walen, S.Frauendorf

Rotational Band Crossings in the Actinides

NUCLEAR REACTIONS 237Np(84Kr, 84Kr'), E=5.36 MeV/nucleon; 235U(208Pb, 208Pb'), E=4.8 MeV/nucleon; measured 84Kr γ-coin, recoil, Eγ, Iγ, Coulomb excitation. 237Np, 235U deduced levels, J, π, yrast bands, band crossing effects.

doi: 10.1007/BF01554052
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1977AG01      J.Phys.(Paris) 38, 435 (1977)

P.Aguer, G.Bastin, C.F.Liang, J.Libert, P.Paris, A.Peghaire

Etude de la Decroissance de 157Tm (T1/2 = 3, 3 min) et de 155Tm (T1/2 = 25 s)

RADIOACTIVITY 155,157Tm; measured Eγ, Iγ, γγ-coin, I(ce). 155,157Er deduced levels, ICC, J, π, λ.

doi: 10.1051/jphys:01977003805043500
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1975AG01      Nucl.Phys. A249, 239 (1975)

P.Aguer, C.F.Liang, J.Libert, P.Paris, A.Peghaire, A.Charvet, R.Duffait, G.Marguier

The Decay of 4 min 158Tm

RADIOACTIVITY 158Tm [from 162Er(p, 5n)]; measured T1/2, Eγ, Iγ, γγ-coin, E(ce), I(ce); deduced ICC, log ft. 158Er deduced levels, J, π, λ. On-line mass-separated sources, Ge(Li), Si(Li).

doi: 10.1016/0375-9474(75)90185-2
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1975AG02      Nucl.Phys. A252, 293 (1975)

P.Aguer, C.F.Liang, J.Libert, P.Paris, A.Peghaire, A.Charvet, R.Duffait, G.Marguier

The Decay of 80 s 156Tm

RADIOACTIVITY 156Tm [from natural Er(p, xn)]; measured Eγ, Iγ, γγ-coin, E(ce), I(ce); deduced ICC, log ft. 156Er deduced levels, J, π, λ. On-line mass-separated sources, Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(75)90500-X
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1975AG03      C.R.Acad.Sci., Ser.B 281, 509 (1975)

P.Aguer, G.Bastin, Chin Fan Liang, J.Libert, P.Paris, A.Peghaire

Etude du Schema de Desintegration du Thulium-159

RADIOACTIVITY 159Tm[from Er(p, xn)]; measured Eγ, Iγ, I(ce), γγ-coin; deduced log ft. 159Er deduced levels, J, π, λ.


1974LI09      Nucl.Phys. A223, 620 (1974)

J.Libert, G.Klotz, P.Baumann, G.Walter

Un Nouvel Embranchement dans la Desintegration β- de 37S

RADIOACTIVITY 37S [from 37Cl(n, p)]; measured Eγ, Iγ; deduced log ft. 37Cl deduced levels, J, π. Natural target.

doi: 10.1016/0375-9474(74)90711-8
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1968LI09      Nucl.Phys. A118, 185 (1968)

J.Libert

Transition Gamma dans 37Cl, Suite a la Radioactivite Beta de 37S

RADIOACTIVITY 37S [from 37Cl(n, p)]; measured Eγ. 37Cl deduced level. Natural target, Ge(Li) detectors.

doi: 10.1016/0375-9474(68)90196-6
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1967LI10      Nucl.Phys. A102, 477 (1967)

J.Libert

Energie de la Transition Isomerique dans 109Ag

RADIOACTIVITY 109Cd; measured Eγ. 109Ag deduced level. Ge(Li) detector.

doi: 10.1016/0375-9474(67)90038-3
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