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NSR database version of April 11, 2024.

Search: Author = L.Gaudefroy

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2024FR02      Phys.Rev.Lett. 132, 142501 (2024)

A.Francheteau, L.Gaudefroy, G.Scamps, O.Roig, V.Meot, A.Ebran, G.Belier

Scission Deformation of the 120Cd/132Sn Neutronless Fragmentation in 252Cf

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ. 120Cd, 132Sn; deduced total kinetic energy (TKE) versus the mass of the fragment, γ-ray energies in coincidence with the neutronless fission events, fragment energy levels and transitions, deformation parameter using a time-dependent collective Hamiltonian model. Twin Frisch-grid ionization chamber (TFGIC).

doi: 10.1103/PhysRevLett.132.142501
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2023FR05      Phys.Rev. C 108, 014610 (2023)

B.Fraisse, G.Belier, V.Meot, L.Gaudefroy, A.Francheteau, O.Roig

Complete neutron-multiplicity distributions in fast-neutron-induced fission

NUCLEAR REACTIONS 239Pu, 235U(n, F), E=1.3-12 MeV; analyzed experimental neutron counter data from 1969SO16; calculated average neutron multiplicity. Proposed procedure based on Tikhonov regularization to unfold the neutron-multiplicity distributions from the raw data of any neutron counter. Comparison to ENDF/B-VIII data and GEF calculations.

doi: 10.1103/PhysRevC.108.014610
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2021DA15      Phys.Rev. C 104, 024321 (2021)

J.M.Daugas, B.Rosse, D.L.Balabanski, D.Bucurescu, S.Kisyov, P.H.Regan, G.Georgiev, L.Gaudefroy, K.Gladnishki, V.Meot, P.Morel, S.Pietri, O.Roig, G.S.Simpson

Magnetic moment of the 11/2- isomeric state in 99Mo and neutron spin g factor quenching in A ≈ 100 nuclei

NUCLEAR MOMENTS 99mMo; measured Eγ, Iγ, γ(θ), Larmor precession, g factor of the 11/2- isomeric state at 684 keV using time-dependent perturbed angular distribution (TDPAD) method, and half-life of the decay of the isomer by γ(t) at the tandem accelerator of the CEA Bruyeres le Chatel; deduced magnetic dipole moment, configuration. Comparison with multishell Interacting boson-fermion model (IBFM-1) calculations. 99mMo produced in 98Mo(d, p), E=6 MeV reaction.

NUCLEAR STRUCTURE 99Mo; calculated levels, J, π, configurations, magnetic moments and g-factor quenching using Interacting boson-fermion model (IBFM-1), and ODDA, PBEM, and SPEC computer codes. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.024321
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021WI12      Nature(London) 590, 566 (2021)

J.N.Wilson, D.Thisse, M.Lebois, N.Jovancevic, D.Gjestvang, R.Canavan, M.Rudigier, D.Etasse, R.-B.Gerst, L.Gaudefroy, E.Adamska, P.Adsley, A.Algora, M.Babo, K.Belvedere, J.Benito, G.Benzoni, A.Blazhev, A.Boso, S.Bottoni, M.Bunce, R.Chakma, N.Cieplicka-Orynczak, S.Courtin, M.L.Cortes, P.Davies, C.Delafosse, M.Fallot, B.Fornal, L.Fraile, A.Gottardo, V.Guadilla, G.Hafner, K.Hauschild, M.Heine, C.Henrich, I.Homm, F.Ibrahim, L.W.Iskra, P.Ivanov, S.Jazrawi, A.Korgul, P.Koseoglou, T.Kroll, T.Kurtukian-Nieto, L.Le Meur, S.Leoni, J.Ljungvall, A.Lopez-Martens, R.Lozeva, I.Matea, K.Miernik, J.Nemer, S.Oberstedt, W.Paulsen, M.Piersa, Y.Popovitch, C.Porzio, L.Qi, D.Ralet, P.H.Regan, K.Rezynkina, V.Sanchez-Tembleque, S.Siem, C.Schmitt, P.-A.Suderstrom, C.Surder, G.Tocabens, V.Vedia, D.Verney, N.Warr, B.Wasilewska, J.Wiederhold, M.Yavahchova, F.Zeiser, S.Ziliani

Angular momentum generation in nuclear fission

NUCLEAR REACTIONS 232Th(n, F), E ∼ 1.9 MeV; measured reaction products, Eγ, Iγ. 82,84Ge, 84,86,88Se, 88,90,92,94Kr, 92,94,96,98Sr, 98,100Zr, 130,132Sn, 132,134,136,138Te, 138,140,142Xe, 142,144,146Ba, 148,150Ce; deduced average J, 0+ side-feeding, fission yields, the intensity ratio of the transition from the first excited state to the ground state, and the transition(s) feeding the first excited state, dependence of average spin on fragment mass. Comparison with statistical theory, 233Th.

NUCLEAR REACTIONS 238U(n, F), E ∼ 1.9 MeV; measured reaction products, Eγ, Iγ. 82Ge, 84,86,88Se, 88,90,92,94Kr, 94,96,98Sr, 98,100,102,104Zr, 102,104Mo, 130,132,134Sn, 132,134,136,138Te, 138,140,142Xe, 142,144,146,148Ba, 148,150Ce; deduced average J, 0+ side-feeding, fission yields, the intensity ratio of the transition from the first excited state to the ground state, and the transition(s) feeding the first excited state, dependence of average spin on fragment mass. Comparison with statistical theory, 239U.

RADIOACTIVITY 252Cf(SF); measured decay products, Eγ, Iγ, TOF. 94,96,98Sr, 98,100,102,104Zr, 102,104,106,108Mo, 108,110,112Ru, 112,114,116Pd, 130,132Sn, 134,136Te, 138,140,142Xe, 142,144,146Ba, 148,150Ce, 152,154Nd; deduced average J, 0+ side-feeding, fission yields, dependence of average spin on fragment mass. Comparison with statistical theory.

doi: 10.1038/s41586-021-03304-w
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2018FE05      Phys.Lett. B 779, 124 (2018)

B.Fernandez-Dominguez, B.Pietras, W.N.Catford, N.A.Orr, M.Petri, M.Chartier, S.Paschalis, N.Patterson, J.S.Thomas, M.Caamano, T.Otsuka, A.Poves, N.Tsunoda, N.L.Achouri, J.-C.Angelique, N.I.Ashwood, A.Banu, B.Bastin, R.Borcea, J.Brown, F.Delaunay, S.Franchoo, M.Freer, L.Gaudefroy, S.Heil, M.Labiche, B.Laurent, R.C.Lemmon, A.O.Macchiavelli, F.Negoita, E.S.Paul, C.Rodriguez-Tajes, P.Roussel-Chomaz, M.Staniou, M.J.Taylor, L.Trache, G.L.Wilson

Re-examining the transition into the N = 20 island of inversion: Structure of 30Mg

NUCLEAR REACTIONS C(31Mg, n)30Mg, E=55.1 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies and intensities, J, π, single-particle σ, spectroscopic factors. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2018.02.002
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetD0931. Data from this article have been entered in the XUNDL database. For more information, click here.


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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Data from this article have been entered in the XUNDL database. For more information, click here.


2016PE14      Phys.Rev. C 94, 024319 (2016)

C.Petrone, J.M.Daugas, G.S.Simpson, M.Stanoiu, C.Plaisir, T.Faul, C.Borcea, R.Borcea, L.Caceres, S.Calinescu, R.Chevrier, L.Gaudefroy, G.Georgiev, G.Gey, O.Kamalou, F.Negoita, F.Rotaru, O.Sorlin, J.C.Thomas

Nearly degenerate isomeric states of 75Cu

NUCLEAR REACTIONS 9Be(86Kr, X), E=60.4 MeV/nucleon; measured ΔE, Bρ and TOF to separate reaction products using LISE2k spectrometer, Eγ, Iγ, γγ-coin, delayed γ, half-lives of isomers by (ion)γ(t) at GANIL facility. 75Cu; deduced levels, B(M1), B(E2) for proposed level-scheme scenarios. Systematics of level energies and B(M1), B(E2) in 69,71,73,75Cu. Comparison with shell-model calculations using jj4b, JUN45 and SMI effective interactions.

doi: 10.1103/PhysRevC.94.024319
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015CA09      Phys.Rev. C 92, 014327 (2015)

L.Caceres, A.Lepailleur, O.Sorlin, M.Stanoiu, D.Sohler, Zs.Dombradi, S.K.Bogner, B.A.Brown, H.Hergert, J.D.Holt, A.Schwenk, F.Azaiez, B.Bastin, C.Borcea, R.Borcea, C.Bourgeois, Z.Elekes, Zs.Fulop, S.Grevy, L.Gaudefroy, G.F.Grinyer, D.Guillemaud-Mueller, F.Ibrahim, A.Kerek, A.Krasznahorkay, M.Lewitowicz, S.M.Lukyanov, J.Mrazek, F.Negoita, F.de Oliveira, Yu.-E.Penionzhkevich, Zs.Podolyak, M.G.Porquet, F.Rotaru, P.Roussel-Chomaz, M.G.Saint-Laurent, H.Savajols, G.Sletten, J.C.Thomas, J.Timar, C.Timis, Zs.Vajta

Nuclear structure studies of 24F

NUCLEAR REACTIONS 9Be(36S, X)24O/26F/27Ne/28Ne/29Na/30Na, E=77.6 MeV/nucleon; measured energy loss, TOF, yields using LISE achromatic spectrometer at GANIL facility. C(27Na, 24F), E=54-65 MeV/nucleon, [secondary cocktail beam of 25,26Ne, 27,28Na, 29,30Mg from C(36S, X), E=77.6 MeV/nucleon primary reaction, and separated using ALPHA and SPEG spectrometers]; measured Eγ, Iγ, (particle)γ-, γγ-coin using Chateau de Cristal array. 24F; deduced levels, J, π, branching ratios, configurations. Comparison with shell-model calculations using USDA and USDB interactions, and ab initio shell-model calculations, using interactions derived from chiral NN+3N forces by means of IM-SRG.

RADIOACTIVITY 24O(β-), (β-n)[from Be(36S, X), E=77.6 MeV/nucleon using LISE spectrometer at GANIL]; measured Eγ, Iγ, Eβ, βγ-, γγ-coin, (24O)β-correlations, half-life of 24O isotope from (24O)γ-correlated decay curve, β-delayed neutron emission probability Pn using four segmented Ge clover detectors of EXOGAM array for γ rays and DSSSDs for particles. 24F; deduced levels, J, π, branching ratios, β feedings, logft. Comparison with shell-model calculations.

doi: 10.1103/PhysRevC.92.014327
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015CA21      Phys.Rev. C 92, 034606 (2015)

M.Caamano, F.Farget, O.Delaune, K.-H.Schmidt, C.Schmitt, L.Audouin, C.-O.Bacri, J.Benlliure, E.Casarejos, X.Derkx, B.Fernandez-Dominguez, L.Gaudefroy, C.Golabek, B.Jurado, A.Lemasson, D.Ramos, C.Rodriguez-Tajes, T.Roger, A.Shrivastava

Characterization of the scission point from fission-fragment velocities

RADIOACTIVITY 240Pu(SF)[from 12C(238U, 10Be), E=6.1 MeV/nucleon]; 250Cf(SF)[from 12C(238U, X)250Cf*, E=6.1 MeV/nucleon]; measured fragment spectra using VAMOS spectrometer at GANIL; deduced velocity of fission fragments with Z=34-62 as a function of the neutron number of the fragment (N=45-100), average fragment velocity, average neutron excess of fragments, neutron multiplicity and total neutron evaporation multiplicity, total kinetic energy of fission fragments, total excitation energy at scission, post-neutron evaporation normalized yields, average difference between the ground states of the fissioning system and the fragments, and minimum energy released in neutron evaporation as functions of the fragment atomic number. Modeling of the fission process through correlated observables.

doi: 10.1103/PhysRevC.92.034606
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2160.


2015FA14      Eur.Phys.J. A 51, 175 (2015)

F.Farget, M.Caamano, D.Ramos, C.Rodriguez-Tajes, K.-H.Schmidt, L.Audouin, J.Benlliure, E.Casarejos, E.Clement, D.Cortina, O.Delaune, X.Derkx, A.Dijon, D.Dore, B.Fernandez-Dominguez, L.Gaudefroy, C.Golabek, A.Heinz, B.Jurado, A.Lemasson, C.Paradela, T.Roger, M.D.Salsac, C.Schmitt

Transfer-induced fission in inverse kinematics: Impact on experimental and evaluated nuclear data bases

doi: 10.1140/epja/i2015-15175-y
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2015LE17      Phys.Rev. C 92, 054309 (2015)

A.Lepailleur, K.Wimmer, A.Mutschler, O.Sorlin, J.C.Thomas, V.Bader, C.Bancroft, D.Barofsky, B.Bastin, T.Baugher, D.Bazin, V.Bildstein, C.Borcea, R.Borcea, B.A.Brown, L.Caceres, A.Gade, L.Gaudefroy, S.Grevy, G.F.Grinyer, H.Iwasaki, E.Khan, T.Kroll, C.Langer, A.Lemasson, O.Llidoo, J.Lloyd, E.Lunderberg, F.Negoita, F.de Oliveira Santos, G.Perdikakis, F.Recchia, T.Redpath, T.Roger, F.Rotaru, S.Saenz, M.-G.Saint-Laurent, D.Smalley, D.Sohler, M.Stanoiu, S.R.Stroberg, M.Vandebrouck, D.Weisshaar, A.Westerberg

Spectroscopy of 28Na: Shell evolution toward the drip line

NUCLEAR REACTIONS 9Be(36S, X)22N/24O, 26F/27Ne/28Ne/29Na/30Na, E=77.6 MeV/nucleon; measured production yields using LISE spectrometer at GANIL. 9Be(31Mg, 28Na), (32Mg, 28Na), E=95 MeV/nucleon, [secondary 31,32Mg beams from 9Be(48Ca, X), E=140 MeV/nucleon using A1900 separator at NSCL-MSU; measured Eγ, Iγ, (28Na)γ-, γγ-coin, level half-life using S800 spectrograph for 28Na and GRETINA array for γ detection. 28Na; deduced levels, J, π, multipolarity. Comparison with shell-model calculations using WBA-M and USDA interactions. Systematics of binding energies for 26F, 28Na, 30Al. 25O, 26F, 27Ne; calculated levels, J, π using shell-model with WBA-M interaction.

RADIOACTIVITY 28Ne(β-)[from 9Be(36S, X), E=77.6 MeV/nucleon at GANIL]; measured Eγ, Iγ, Eβ, βγ-coin, half-life of 28Ne activity using EXOGAM array for γ detection. 28Na; deduced levels, J, π, β feedings, logft. Comparison with shell model using the USDA interaction. 27,28Al, 27,28Mg, 28Si; observed γ rays from β decay of contaminants.

doi: 10.1103/PhysRevC.92.054309
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014CH21      Phys.Rev. C 89, 051301 (2014)

R.Chevrier, L.Gaudefroy

Shell model structure of 43S and 44S re-examined

NUCLEAR STRUCTURE 43,44S; calculated levels, J, π, B(E2), B(M1), quadrupole moment, β and γ deformation parameters. 44S, 46Ar, 48Ca; calculated level energies, spectroscopic quadrupole moments, correlation energies, shape parameters of 3+, 4+ and 5+ states. Shell model with quadrupole invariants. Discussed comparison with antisymmetrized molecular dynamics (AMD) and beyond-mean-field calculations.

doi: 10.1103/PhysRevC.89.051301
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2014PL01      Phys.Rev. C 89, 021302 (2014)

C.Plaisir, L.Gaudefroy, V.Meot, A.Blanc, J.M.Daugas, O.Roig, N.Arnal, T.Bonnet, F.Gobet, F.Hannachi, M.Tarisien, M.Versteegen, T.Roger, M.Rejmund, A.Navin, C.Schmitt, G.Fremont, J.Goupil, J.Pancin, C.Spitaels, M.Zielinska

In-flight fast-timing measurements in 152Sm

NUCLEAR REACTIONS 152Sm(136Xe, 152Sm'), E=5.09 MeV/nucleon; measured time-of-flight of recoiling nuclei using VAMOS spectrometer, Eγ, Iγ, γγ-coin level half-lives by in-flight fast-timing (IFFT) technique using LaBr3 detectors at GANIL facility. Coulomb excitation. 152Sm; deduced levels, J, π, transition quadrupole moments from level half-lives of ground-state band members. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.89.021302
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Data from this article have been entered in the XUNDL database. For more information, click here.


2013AL14      Phys.Rev. C 88, 034301 (2013)

T.Al Kalanee, J.Gibelin, P.Roussel-Chomaz, N.Keeley, D.Beaumel, Y.Blumenfeld, B.Fernandez-Dominguez, C.Force, L.Gaudefroy, A.Gillibert, J.Guillot, H.Iwasaki, S.Krupko, V.Lapoux, W.Mittig, X.Mougeot, L.Nalpas, E.Pollacco, K.Rusek, T.Roger, H.Savajols, N.de Sereville, S.Sidorchuk, D.Suzuki, I.Strojek, N.A.Orr

Structure of unbound neutron-rich 9He studied using single-neutron transfer

NUCLEAR REACTIONS 2H(8He, p), E=15 MeV/nucleon, [secondary 8He beam from C(13C, X), E=75 MeV/nucleon primary reaction]; 2H(16O, p), E=15 MeV/nucleon; measured proton spectra, kinetic energies and angles of recoiling protons, σ(θ) using MUST2 telescopes of Si-CsI detectors at GANIL facility. 9He, 17O; deduced levels from experimental missing mass spectra, J, π, widths, l-transfers, configurations, spectroscopic factors, parity inversion in 9He. DWBA and CCBA analyses of σ(θ) data. Reviewed previous measurements of level structure of 9He using different reactions. 16O(d, p) reaction in inverse kinematics used as a test case.

doi: 10.1103/PhysRevC.88.034301
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2169. Data from this article have been entered in the XUNDL database. For more information, click here.


2013CA16      Phys.Rev. C 88, 024605 (2013); Erratum Phys.Rev. C 89, 069903 (2014)

M.Caamano, O.Delaune, F.Farget, X.Derkx, K.-H.Schmidt, L.Audouin, C.-O.Bacri, G.Barreau, J.Benlliure, E.Casarejos, A.Chbihi, B.Fernandez-Dominguez, L.Gaudefroy, C.Golabek, B.Jurado, A.Lemasson, A.Navin, M.Rejmund, T.Roger, A.Shrivastava, C.Schmitt

Isotopic yield distributions of transfer- and fusion-induced fission from 238U+12C reactions in inverse kinematics

NUCLEAR REACTIONS 12C(238U, F)240Pu/241Pu/250Cf*, E=6.1 MeV/nucleon; measured particle and γ spectra, (fragment)γ-coin, energy loss, time-of-flight, yields and angular distributions of fragments of Z=30-64, A=80-160 from fission of 250Cf, 240,241Pu using SPIDER, VAMOS, and EXOGAM detector systems at GANIL facility. Inverse kinematics and multi-nucleon transfer-induced fission. 110Ru, 144Ce; deduced levels from (fragment)γ coin spectra. Z=30, A=70-82, 85; Z=31, A=70-85; Z=32, A=71-87; Z=33, A=73-89; Z=34, A=73, 75-90; Z=35, A=79-93; Z=36, A=81-96; Z=37, A=83-99; Z=38, A=86-102; Z=39, A=88-105; Z=40, A=90-107; Z=41, A=93-110; Z=42, A=95-113; Z=43, A=97-115; Z=44, A=100-118; Z=45, A=102-120; Z=46, A=104-122; Z=47, A=107-126; Z=48, A=109-127; Z=49, A=112-131; Z=50, A=114-133; Z=51, A=116-135; Z=52, A=118-138; Z=53, A=122-141; Z=54, A=123-143; Z=55, A=126-146; Z=56, A=130-148; Z=57, A=131-150; Z=58, A=134-152; Z=59, A=137-153; Z=60, A=139-156; Z=61, A=142-158; Z=62, A=144-159; Z=63, A=149-160; Z=64, A=151-159; measured yields from fission of compound nucleus 250Cf. Z=34, A=82-88; Z=35, A=85-92; Z=36, A=85-94; Z=37, A=87-97; Z=38, A=90-101; Z=39, A=91-102; Z=40, A=94-106; Z=41, A=95-109; Z=42, A=98-111; Z=43, A=101-112; Z=44, A=104-114; Z=45, A=105-114; Z=46, A=110-116; Z=47, A=114-119; Z=48, A=115, 118-122; Z=49, A=122-130; Z=50, A=125-134, 136; Z=51, A=125-137; Z=52, A=129-139; Z=53, A=128-140; Z=54, A=130-144; Z=55, A=133-145; Z=56, A=134-145; Z=57, A=138-149; Z=58, A=142-151; Z=59, A=145-152; Z=60, A=148-154; measured yields from fission of multi-nucleon transfer induced nuclei 240,241Pu.

doi: 10.1103/PhysRevC.88.024605
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2160.


2013LE03      Phys.Rev.Lett. 110, 082502 (2013)

A.Lepailleur, O.Sorlin, L.Caceres, B.Bastin, C.Borcea, R.Borcea, B.A.Brown, L.Gaudefroy, S.Grevy, G.F.Grinyer, G.Hagen, M.Hjorth-Jensen, G.R.Jansen, O.Llidoo, F.Negoita, F.de Oliveira, M.-G.Porquet, F.Rotaru, M.-G.Saint-Laurent, D.Sohler, M.Stanoiu, J.C.Thomas

Spectroscopy of 26F to Probe Proton-Neutron Forces Close to the Drip Line

RADIOACTIVITY 26F(β-), (β-n) [from Be(36S, X)26F, E=77.6 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced decay scheme, J, π, long-lived isomer T1/2. Comparison with available data.

doi: 10.1103/PhysRevLett.110.082502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2013PE03      Acta Phys.Pol. B44, 637 (2013)

C.Petrone, J.M.Daugas, M.Stanoiu, F.Negoita, G.Simpson, C.Borcea, R.Borcea, L.Caceres, S.Calinescu, R.Chevrier, L.Gaudefroy, G.Georgiev, G.Gey, O.Kamalou, C.Plaisir, F.Rotaru, O.Sorlin, J.C.Thomas

Gamma Spectroscopy of Low-energy Isomeric States in Neutron-rich Nuclei: 75Cu

NUCLEAR REACTIONS Be(86Kr, X)75Cu, E=60.4 MeV/nucleon; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced level scheme, J, π, B(M1), B(E2). Comparison with available data.

doi: 10.5506/APhysPolB.44.637
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2012BA38      Eur.Phys.J. A 48, 113 (2012)

E.Bauge, G.Belier, J.Cartier, A.Chatillon, J.M.Daugas, J.P.Delaroche, P.Dossantos-Uzarralde, H.Duarte, N.Dubray, M.Ducauze-Philippe, L.Gaudefroy, G.Gosselin, T.Granier, S.Hilaire, H.-T.P.Chau, J.M.Laborie, B.Laurent, X.Ledoux, C.Le Luel, V.Meot, P.Morel, B.Morillon, O.Roig, P.Romain, J.Taieb, C.Varignon, N.Authier, P.Casoli, B.Richard

Coherent investigation of nuclear data at CEA DAM: Theoretical models, experiments and evaluated data

NUCLEAR REACTIONS 175,176Lu(n, γ), E≈0.02-100 eV; measured Eγ, Iγ, γγ-coin; deduced σ, resonances. Compared with ENDF/B-VII.0 with SAMMY7. 176Lu(n, γ), E=80-40000 eV; measured Eγ, Iγ, γγ-coin; deduced σ. Compared with ENDF/B-VII.0 and other data. 174Lu(3He, p), E=60-600 keV; measured prompt and delayed Eγ, Iγ, γγ-coin; deduced γ ray emission probability vs energy; calculated γ ray emission probability using TALYS.177mLu(n, γ), (n, X), E=thermal; measured measured Eγ, Iγ, γγ-coin; deduced σ, resonance parameters. 239Pu(n, F), E not given; measured prompt En, In using FIGARO. Compared with other data, ENDF/B-VII and BRC evaluation. 2H(n, 2n), E=4-26 MeV; measured En, In using CARMEN; deduced σ. Compared with other data, ENDF/B-VII, Ac18, NJOY. 234U(n, F), E=0.15-1.2 MeV;236U(n, F), E=0.75-2.0 MeV;238U(n, F), E=0.01-1 MeV; calculated σ using TALYS. Compared with data. 238U(n, F), E=2, 2.9, 6.01, 7.02, 8.01, 8.94, 14.3, 14.7 MeV; calculated prompt fission σ(n, En). Compared with data. 239Pu(n, γ), (n, F), (n, n'), (n, 2n), (n, 3n), E=0.001-20 MeV; calculated σ, uncertainties, correlation matrix using BFMC.

doi: 10.1140/epja/i2012-12113-7
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2012CA09      Phys.Rev. C 85, 024311 (2012); Pub.Note Phys.Rev. C 85, 039901 (2012)

L.Caceres, D.Sohler, S.Grevy, O.Sorlin, Zs.Dombradi, B.Bastin, N.L.Achouri, J.C.Angelique, F.Azaiez, D.Baiborodin, R.Borcea, C.Bourgeois, A.Buta, A.Burger, R.Chapman, J.C.Dalouzy, Z.Dlouhy, A.Drouard, Z.Elekes, S.Franchoo, L.Gaudefroy, S.Iacob, B.Laurent, M.Lazar, X.Liang, E.Lienard, J.Mrazek, L.Nalpas, F.Negoita, F.Nowacki, N.A.Orr, Y.Penionzhkevich, Zs.Podolyak, F.Pougheon, A.Poves, P.Roussel-Chomaz, M.G.Saint-Laurent, M.Stanoiu, I.Stefan

In-beam spectroscopic studies of the 44S nucleus

NUCLEAR REACTIONS 9Be(45Cl, 44S), [45Cl secondary beam from C(48Ca, X), E=60 MeV/nucleon primary reaction], E=42 MeV/nucleon; measured energy loss, time of flight, particle spectra, Eγ, Iγ, γγ-, (44S)γ-coin at GANIL. 44S; deduced levels, J, π. 45Cl; deduced spin and parity of the ground state. One proton knock-out reaction. Comparison with previous measurements, and with shell-model calculations using SDPF-U interaction.

doi: 10.1103/PhysRevC.85.024311
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2012CH16      Phys.Rev.Lett. 108, 162501 (2012)

R.Chevrier, J.M.Daugas, L.Gaudefroy, Y.Ichikawa, H.Ueno, M.Hass, H.Haas, S.Cottenier, N.Aoi, K.Asahi, D.L.Balabanski, N.Fukuda, T.Furukawa, G.Georgiev, H.Hayashi, H.Iijima, N.Inabe, T.Inoue, M.Ishihara, Y.Ishii, D.Kameda, T.Kubo, T.Nanao, G.Neyens, T.Ohnishi, M.M.Rajabali, K.Suzuki, H.Takeda, M.Tsuchiya, N.Vermeulen, H.Watanabe, A.Yoshimi

Is the 7/21-1 Isomer State of 43S Spherical?

NUCLEAR MOMENTS 43S; measured isomer deexciting Eγ, Iγ; deduced spectroscopic quadrupole moment. Comparison with SDPF-U interaction shell model calculations.

doi: 10.1103/PhysRevLett.108.162501
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2012GA45      Phys.Rev.Lett. 109, 202503 (2012)

L.Gaudefroy, W.Mittig, N.A.Orr, S.Varet, M.Chartier, P.Roussel-Chomaz, J.P.Ebran, B.Fernandez-Dominguez, G.Fremont, P.Gangnant, A.Gillibert, S.Grevy, J.F.Libin, V.A.Maslov, S.Paschalis, B.Pietras, Yu.-E.Penionzhkevich, C.Spitaels, A.C.C.Villari

Direct Mass Measurements of 19B, 22C, 29F, 31Ne, 34Na and Other Light Exotic Nuclei

ATOMIC MASSES 19B, 20,22C, 22,23N, 27,29F, 30,31Ne, 33,34Na, 43,44S, 45,46Cl, 47Ar; measured TOF for reaction products; deduced masses, two-neutron separation energies, matter radii, Borromean systems. Comparison with available data.

doi: 10.1103/PhysRevLett.109.202503
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2012MO29      Phys.Lett. B 718, 441 (2012)

X.Mougeot, V.Lapoux, W.Mittig, N.Alamanos, F.Auger, B.Avez, D.Beaumel, Y.Blumenfeld, R.Dayras, A.Drouart, C.Force, L.Gaudefroy, A.Gillibert, J.Guillot, H.Iwasaki, T.Al Kalanee, N.Keeley, L.Nalpas, E.C.Pollacco, T.Roger, P.Roussel-Chomaz, D.Suzuki, K.W.Kemper, T.J.Mertzimekis, A.Pakou, K.Rusek, J.-A.Scarpaci, C.Simenel, I.Strojek, R.Wolski

New excited states in the halo nucleus 6He

NUCLEAR REACTIONS 1H(8He, t)6He, E=15.4 MeV/nucleon; measured reaction products, Et, It; deduced σ(θ), energy levels, J, π, resonances. Comparison with available data.

doi: 10.1016/j.physletb.2012.10.054
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2012NI09      Phys.Rev. C 85, 054321 (2012)

M.Niikura, B.Mouginot, S.Franchoo, I.Matea, I.Stefan, D.Verney, F.Azaiez, M.Assie, P.Bednarczyk, C.Borcea, A.Burger, G.Burgunder, A.Buta, L.Caceres, E.Clement, L.Coquard, G.de Angelis, G.de France, F.de Oliveira Santos, A.Dewald, A.Dijon, Z.Dombradi, E.Fiori, C.Fransen, G.Friessner, L.Gaudefroy, G.Georgiev, S.Grevy, M.Hackstein, M.N.Harakeh, F.Ibrahim, O.Kamalou, M.Kmiecik, R.Lozeva, A.Maj, C.Mihai, O.Moller, S.Myalski, F.Negoita, D.Pantelica, L.Perrot, Th.Pissulla, F.Rotaru, W.Rother, J.A.Scarpaci, C.Stodel, J.C.Thomas, P.Ujic

First direct lifetime measurement of the 21+ state in 72, 74Zn: New evidence for a shape transition between N=40 and N=42 close to Z=28

NUCLEAR REACTIONS 9Be(73Zn, X), (74Zn, X), (72Cu, X), [73,74Zn, 72Cu secondary cocktail beam from 9Be(76Ge, X), E=60 MeV/nucleon primary reaction], E not given; measured Eγ, Iγ, half-lives of first 2+ states by RDDS method using LISE spectrometer, plunger device, and EXOGAM array at GANIL facility. 72,74Zn; deduced B(E2), β2; discussed static quadrupole moments for first 2+ states. Systematics of level energies, B(E2), Q(2+), β2, occupation numbers for even-even N=32-48, Z=28-38 nuclei. Comparison of B(E2) values for first 2+ states in 72,74Zn with previous studies and shell-model calculations.

doi: 10.1103/PhysRevC.85.054321
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2012OU01      Phys.Rev. C 85, 035804 (2012)

N.Oulebsir, F.Hammache, P.Roussel, M.G.Pellegriti, L.Audouin, D.Beaumel, A.Bouda, P.Descouvemont, S.Fortier, L.Gaudefroy, J.Kiener, A.Lefebvre-Schuhl, V.Tatischeff

Indirect study of the 12C(α, γ)16O reaction via the 12C(7Li, t)16O transfer reaction

NUCLEAR REACTIONS 12C(7Li, t)16O, E=28, 34 MeV; measured E(t), I(t), σ(θ) using Enge split-pole magnetic spectrometer; deduced levels, J, π, yields, width, spectroscopic factors, ANC, α-reduced width. HF+FR-DWBA analysis of σ(θ) data. 12C(α, α'), E(cm)=1-5 MeV; analyzed data by R-matrix analysis; deduced E2 and E1 components. 12C(α, γ)16O, E(cm)=0.3-3.5 MeV; deduced astrophysical S factor with R-matrix calculations of the E2 and E1 components. Comparison with earlier results and NACRE evaluation.

RADIOACTIVITY 16N(β-); analyzed β-delayed α spectrum by R-matrix fit for validation purpose.

doi: 10.1103/PhysRevC.85.035804
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2012SH22      Phys.Lett. B 714, 246 (2012)

K.Shimada, H.Ueno, G.Neyens, K.Asahi, D.L.Balabanski, J.M.Daugas, M.Depuydt, M.De Rydt, L.Gaudefroy, S.Grevy, Y.Hasama, Y.Ichikawa, D.Kameda, P.Morel, T.Nagatomo, L.Perrot, Ch.Stodel, J.-C.Thomas, Y.Utsuno, W.Vanderheijden, N.Vermeulen, P.Vingerhoets, E.Yagi, K.Yoshida, A.Yoshimi

Erosion of N = 20 shell in 33Al investigated through the ground-state electric quadrupole moment

NUCLEAR MOMENTS 33Al; measured NMR spectrum; deduced ground state electric quadrupole moment. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2012.07.030
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2012UJ01      J.Phys.:Conf.Ser. 337, 012015 (2012)

P.Ujic, F.de Oliveira, A.Lagoyannis, T.J.Mertzimekis, S.Harissopulos, P.Demetriou, A.Spyrou, C.Stodel, M.G.Saint-Laurent, O.Kamalou, A.Lefebvre-Schuhl, S.Grevy, L.Caceres, M.Lewitowicz, M.A.Amthor, L.Perot, A.Coc, V.Tatischeff, J.Kiener, O.Sorlin, A.Lepailleur, M.Assie, B.Bastin, L.Achouri, R.Borcea, C.Borcea, M.Stanoiu, G.de France, E.Clement, A.Pautrat, A.Buta, L.Gaudefroy, V.Meot, I.Deloncle

Astrophysical(α, γ) reaction in inverse kinematics; Electron screening effect in the beta-decay

NUCLEAR REACTIONS 4He(78Kr, γ), E=1.73 MeV/nucleon; measured E(82Sr), I(82Sr) using LISE3 spectrometer. Feasibility study of (α, γ) reaction measurements in inverse kinematics.

RADIOACTIVITY 19O(β-);19Ne(EC), (β+); measured decay products; deduced T1/2 in different environments and temperatures. Deduced also 19O branching ratio, but not reported.

doi: 10.1088/1742-6596/337/1/012015
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2012WE08      J.Phys.:Conf.Ser. 337, 012018 (2012)

L.Weissman, U.Bergmann, J.Cederkall, L.Fraile, S.Franchoo, H.O.U.Fynbo, T.Fritioff, U.Koster, O.Arnd, I.Dillman, O.Hallmann, K.-L.Kratz, B.Pfeiffer, A.Wohr, L.Gaudefroy, O.Sorlin, for the ISOLDE collaboration

Decay of 48-50Ar isotopes

RADIOACTIVITY 48,49,50Ar(β-)[from mass separator]; measured β-gated Eγ, Iγ, γγ-coin, Eβ, Iβ, βγ-coin using βγ detector, β telescope and secondary ECR ion source; deduced T1/2.

doi: 10.1088/1742-6596/337/1/012018
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2011BA27      Phys.Rev. C 84, 015803 (2011)

A.Banu, L.Trache, F.Carstoiu, N.L.Achouri, A.Bonaccorso, W.N.Catford, M.Chartier, M.Dimmock, B.Fernandez-Dominguez, M.Freer, L.Gaudefroy, M.Horoi, M.Labiche, B.Laurent, R.C.Lemmon, F.Negoita, N.A.Orr, S.Paschalis, N.Patterson, E.S.Paul, M.Petri, B.Pietras, B.T.Roeder, F.Rotaru, P.Roussel-Chomaz, E.Simmons, J.S.Thomas, R.E.Tribble

Structure of 23Al from the one-proton breakup reaction and astrophysical implications

NUCLEAR REACTIONS 12C(23Al, 22Mg), [23Al secondary beam from C(32S, X)E=95 MeV/nucleon primary reaction], E=57 MeV/nucleon; measured fragment spectra, inclusive and exclusive longitudinal momentum distributions, and widths, Eγ, (fragment)γ-coin. 22Mg; deduced levels, J, π, σ, spectroscopic factors, asymptotic normalization coefficients. 23Al; deduced g.s. Jπ, configuration mixing. Comparison with Glauber and large-scale shell model calculations. 22Mg(p, γ)23Al, E<1 MeV; deduced stellar reaction rates; discussed astrophysical significance of 22Na nucleosynthesis in ONe novae.

doi: 10.1103/PhysRevC.84.015803
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2011BO30      J.Korean Phys.Soc. 59, 1924s (2011)

G.Boutoux, B.Jurado, V.Meot, M.Aiche, A.Bail, G.Barreau, E.Bauge, J.T.Burke, N.Capellan, I.Companis, S.Czajkowski, J.M.Daugas, D.Dassie, X.Derkx, T.Faul, B.Haas, L.Gaudefroy, F.Gunsing, I.Matea, L.Mathieu, P.Morel, N.Pillet, M.G.Porquet, O.Roig, P.Romain, O.Serot, J.Taieb, L.Tassan-Got, C.Theroine

Neutron-Induced Capture Cross Sections via the Surrogate Reaction Method

NUCLEAR REACTIONS 174Yb(3He, pγ), E=24 MeV; measured Ep, Ip(θ) using Si(Li), Eγ, Iγ using C6D6, pγ-coin, γγ-coin. 176Lu deduced γ emission probability, 175Lu(n, γ) σ using surrogate reaction; calculated 176Lu γ emission probability, 175Lu(n, γ) σ using TALYS.

doi: 10.3938/jkps.59.1924
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2011CA04      Acta Phys.Pol. B42, 533 (2011)

L.Caceres, D.Sohler, S.Grevy, C.Force, O.Sorlin, Zs.Dombradi, L.Gaudefroy, N.L.Achouri, J.C.Angelique, F.Azaiez, D.Bayborodin, B.Bastin, R.Borcea, C.Bourgeois, A.Buta, A.Burger, R.Chapman, J.C.Dalouzy, Z.Dlouhy, A.Drouard, Z.Elekes, S.Franchoo, S.Iacob, B.Laurent, M.Lazar, X.Liang, E.Lienard, J.Mrazek, L.Nalpas, F.Negoita, N.A.Orr, Y.Penionzhkevich, Zs.Podolyak, F.Pougheon, P.Roussel-Chomaz, M.G.Saint-Laurent, M.Stanoiu, I.Stefan, F.Nowacki, A.Poves

Shells and Shapes in the 44S Nucleus

NUCLEAR REACTIONS 9Be(48Ca, X)44S, E=60 MeV/nucleon; measured reaction fragments, Eγ, Iγ; deduced T1/2 for the isomeric state, B(E2). Comparison with Large Scale Shell Model using the SDPF-U interaction.


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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2011DI08      Phys.Rev. C 83, 064321 (2011)

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

Lifetime measurements in 63Co and 65Co

NUCLEAR REACTIONS 64Ni(238U, X), E=6.5 MeV/nucleon; measured particle spectra, Eγ, Iγ, γγ-coin, half-lives by recoil distance Doppler shift and the differential decay curve methods with a plunger device EXOGAM array. 63,65Co; deduced levels, J, π, B(E2). Systematics of excitation energies and B(E2) values in the even-N Fe, Co, and Ni nuclides. Comparison with large-scale shell model calculations in the pf and pfg9/2 valence space.

doi: 10.1103/PhysRevC.83.064321
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2011NI03      Acta Phys.Pol. B42, 537 (2011)

M.Niikura, B.Mouginot, F.Azaiez, G.De Angelis, M.Assie, P.Bednarczyk, C.Borcea, A.Burger, G.Burgunder, A.Buta, L.Caceres, E.Clement, L.Coquard, G.De France, F.De Oliveira, A.Dewald, A.Dijon, Z.Dombradi, E.Fiori, S.Franchoo, C.Fransen, G.Friessner, L.Gaudefroy, G.Georgiev, S.Grevy, M.Hackstein, M.N.Harakeh, F.Ibrahim, M.Kmiecik, R.Lozeva, A.Maj, I.Matea, C.Mihai, O.Moller, S.Myalski, F.Negoita, D.Pantelica, L.Perrot, T.Pissula, F.Rotaru, W.Rother, J.A.Scarpaci, I.Stefan, C.Stodel, J.C.Thomas, P.Ujic, D.Verney

Lifetime Measurement of 2+1 State in 74Zn with Differential Plunger Technique

NUCLEAR REACTIONS 9Be(76Ge, X)73Zn/74Zn, E=60 MeV/nucleon; measured reaction fragments, Eγ, Iγ; deduced B(E2), γ-ray yields.

doi: 10.5506/APhysPolB.42.537
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2011SO22      Phys.Lett. B 703, 417 (2011)

D.Sohler, S.Grevy, Zs.Dombradi, O.Sorlin, L.Gaudefroy, B.Bastin, N.L.Achouri, J.C.Angelique, F.Azaiez, D.Baiborodin, R.Borcea, C.Bourgeois, A.Buta, A.Burger, L.Caceres, R.Chapman, J.C.Dalouzy, Z.Dlouhy, A.Drouard, Z.Elekes, S.Franchoo, S.Iacob, I.Kuti, B.Laurent, M.Lazar, X.Liang, E.Lienard, S.M.Lukyanov, J.Mrazek, L.Nalpas, F.Negoita, F.Nowacki, N.A.Orr, Yu.E.Penionzkhevitch, Zs.Podolyak, F.Pougheon, A.Poves, P.Roussel-Chomaz, M.Stanoiu, I.Stefan, M.G.St-Laurent

Spectroscopy of 39, 41Si and the border of the N=28 island of inversion

NUCLEAR REACTIONS Be(40P, p), (41P, np), (42S, n2p), (43S, 2n2p), (42P, p), (43S, np), (44S, 2np), E=41.5 MeV/nucleon; measured reaction products, Eγ, Iγ. 39,41Si; deduced level scheme, J, π, low-lying intruder and deformed states. 48Ca secondary beams.

doi: 10.1016/j.physletb.2011.08.004
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2010DE11      Phys.Rev. C 81, 034308 (2010), Publishers Note Phys.Rev. C 81, 059903 (2010)

M.De Rydt, J.M.Daugas, F.de Oliveira Santos, L.Gaudefroy, S.Grevy, D.Kameda, V.Kumar, R.Lozeva, T.J.Mertzimekis, P.Morel, T.Nagatomo, G.Neyens, L.Perrot, O.Sorlin, C.Stodel, J.C.Thomas, N.Vermeulen, P.Vingerhoets

g factor of the 44Cl ground state: Probing the reduced Z=16 and N=28 gaps

NUCLEAR REACTIONS 9Be(48Ca, X)44Cl, E=60 MeV/nucleon; measured β-NMR resonance Larmor frequency; deduced g factor, levels, J, π, configurations.

NUCLEAR MOMENTS 44Cl; measured g factor by Larmor frequency using β-NMR method. Comparison with systematics of 39,41,43,45Cl, 46K and with shell-model calculations.

NUCLEAR STRUCTURE 39,41,43,44,45Cl, 46K; calculated levels, J, π, g factors and configurations using large-scale shell-model approach with the SDPF-U residual interaction.

doi: 10.1103/PhysRevC.81.034308
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2010FO04      Phys.Rev.Lett. 105, 102501 (2010)

C.Force, S.Grevy, L.Gaudefroy, O.Sorlin, L.Caceres, F.Rotaru, J.Mrazek, N.L.Achouri, J.C.Angelique, F.Azaiez, B.Bastin, R.Borcea, A.Buta, J.M.Daugas, Z.Dlouhy, Zs.Dombradi, F.De Oliveira, F.Negoita, Y.Penionzhkevich, M.G.Saint-Laurent, D.Sohler, M.Stanoiu, I.Stefan, C.Stodel, F.Nowacki

Prolate-Spherical Shape Coexistence at N=28 in 44S

NUCLEAR REACTIONS Be(48Ca, X)44S, E=60 MeV/nucleon; measured electron spectra, Eγ, Iγ. 44S; deduced J, π, level scheme, B(E2), monopole strength, deformation parameter. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.105.102501
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2010GA15      Phys.Rev. C 81, 064329 (2010)

L.Gaudefroy

Shell model study of N ≈ 28 neutron-rich nuclei

NUCLEAR STRUCTURE 42,44P, 44,45,46Cl, 46,47,48K; calculated levels, J, π. 43P; calculated levels, J, π, B(M1), B(E2), intrinsic quadrupole moments. 41,42Si, 43,44,45S, 45,46,47Ar, 47,48,49Ca; discussed structure. Shell-model calculations using the SDPF-U interaction. Intruder ground states.

doi: 10.1103/PhysRevC.81.064329
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2010GO18      Eur.Phys.J. A 43, 251 (2010)

C.Golabek, S.Heinz, W.Mittig, F.Rejmund, A.C.C.Villari, S.Bhattacharyva, D.Boilley, G.De France, A.Drouart, L.Gaudefroy, L.Giot, V.Maslov, M.Morjean, G.Mukherjee, Yu.Penionzkevich, P.Roussel-Chomaz, C.Stodel

Investigation of deep inelastic reactions in 238U + 238U at Coulomb barrier energies

NUCLEAR REACTIONS 238U(238U, X), E=6.09-7.35 MeV/nucleon; measured reaction product yields, mass and energy distributions, σ(θ) using VAMOS detector; deduced reaction mechanism features, di-nuclear system formation. Comparison with data and models.

doi: 10.1140/epja/i2010-10911-5
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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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2009DE25      Phys.Lett. B 678, 344 (2009)

M.De Rydt, G.Neyens, K.Asahi, D.L.Balabanski, J.M.Daugas, M.Depuydt, L.Gaudefroy, S.Grevy, Y.Hasama, Y.Ichikawa, P.Morel, T.Nagatomo, T.Otsuka, L.Perrot, K.Shimada, C.Stodel, J.C.Thomas, H.Ueno, Y.Utsuno, W.Vanderheijden, N.Vermeulen, P.Vingerhoets, A.Yoshimi

Precision measurement of the electric quadrupole moment of 31Al and determination of the effective proton charge in the sd-shell

RADIOACTIVITY 31Al(β-); measured electric quadrupole coupling constant; deduced quadrupole moment, proton effective charge using two β-NQR techniques. Comparison with shell model. Quadrupole systematics in nearby nuclei discussed.

doi: 10.1016/j.physletb.2009.06.043
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2009FR04      Acta Phys.Pol. B40, 419 (2009)

S.Franchoo, N.L.Achouri, A.Algora, A.Al-Khatib, J.-C.Angelique, F.Azaiez, D.Baiborodin, B.Bastin, D.Beaumel, M.Belleguic, G.Benzoni, Y.Blumenfeld, C.Borcea, R.Borcea, C.Bourgeois, P.Bringel, B.A.Brown, A.Burger, A.Buta, R.Chapman, E.Clement, J.-C.Dalouzy, Z.Dlouhy, Z.Dombradi, A.Drouart, Z.Elekes, C.Engelhardt, S.Fortier, Z.Fulop, L.Gaudefroy, M.Gelin, J.Gibelin, A.Gorgen, S.Grevy, D.Guillemaud-Mueller, F.Hammache, H.Hubel, S.Iacob, F.Ibrahim, K.Kemper, A.Kerek, W.Korten, A.Krasznahorkay, K.-L.Kratz, B.Laurent, M.Lazar, D.Lebhertz, M.Lewitowicz, X.Liang, E.Lienard, S.Lukyanov, S.Mandal, C.Monrozeau, J.Mrazek, L.Nalpas, A.Navin, F.Negoita, F.Nowacki, N.Orr, A.Ostrowski, T.Otsuka, D.Pantelica, Y.Penionzhkevich, J.Piekarewicz, Z.Podolyak, E.Pollacco, F.Pougheon, A.Poves, F.Rotaru, P.Roussel-Chomaz, E.Rich, J.-A.Scarpaci, M.-G.Saint-Laurent, H.Savajols, G.Sletten, D.Sohler, O.Sorlin, M.Stanoiu, I.Stefan, T.Suzuki, C.Theisen, J.Timar, C.Timis, E.Tryggestad, D.Verney, S.Williams, A.Yamamoto

Recent Results from GANIL


2009GA05      Phys.Rev.Lett. 102, 092501 (2009)

L.Gaudefroy, J.M.Daugas, M.Hass, S.Grevy, Ch.Stodel, J.C.Thomas, L.Perrot, M.Girod, B.Rosse, J.C.Angelique, D.L.Balabanski, E.Fiori, C.Force, G.Georgiev, D.Kameda, V.Kumar, R.L.Lozeva, I.Matea, V.Meot, P.Morel, B.S.Nara Singh, F.Nowacki, G.Simpson

Shell Erosion and Shape Coexistence in 4316S27

RADIOACTIVITY 43S(IT); measured Eγ, Iγ(θ), g-factor using the time dependent perturbed angular distribution method; deduced B(E2), B(M1).

doi: 10.1103/PhysRevLett.102.092501
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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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2009GR04      Phys.Rev. C 79, 034318 (2009)

M.Grasso, L.Gaudefroy, E.Khan, T.Niksic, J.Piekarewicz, O.Sorlin, N.Van Giai, D.Vretenar

Nuclear "bubble" structure in 34Si

NUCLEAR STRUCTURE 22,24O, 34,36Si; calculated neutron densities, charge densities, binding energies, charge radii, neutron skin thickness. Shell model, non-relativistic mean-field approach and relativistic mean-field approach calculations.

doi: 10.1103/PhysRevC.79.034318
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2009GR16      Int.J.Mod.Phys. E18, 2009 (2009)

M.Grasso, E.Khan, J.Margueron, N.Van Giai, L.Gaudefroy, T.Niksic, D.Vretenar, J.Piekarewicz, O.Sorlin

Bubbles in exotic nuclei

NUCLEAR STRUCTURE 46,68Ar; calculated proton densities with SkI5, SLy4 interactions in the HF approach.

doi: 10.1142/S0218301309014184
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2009NA41      Eur.Phys.J. A 42, 383 (2009)

T.Nagatomo, K.Shimada, K.Asahi, D.L.Balabanski, J.M.Daugas, M.Depuydt, M.De Rydt, L.Gaudefroy, S.Grevy, Y.Hasama, Y.Ichikawa, D.Kameda, P.Morel, L.Perrot, C.Stodel, J.C.Thomas, W.Vanderheijden, N.Vermeulen, P.Vingerhoets, A.Yoshimi, G.Neyens, H.Ueno

Electric quadrupole moment of the neutron-rich 33Al

RADIOACTIVITY 33Al(β-)[from Be(36S, X), E=77.5 MeV/nucleon]; measured β-NQR spectra from polarized 33Al nuclei. LISE spectrometer at GANIL.

NUCLEAR MOMENTS 33Al; measured electric quadrupole moment by β-ray detected nuclear quadrupole resonance (β-NQR) method. Relevance to 'Island of Inversion'. Polarized 33Al nuclei.

doi: 10.1140/epja/i2009-10885-3
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2009SH42      Phys.Rev. C 80, 051305 (2009)

A.Shrivastava, M.Caamano, M.Rejmund, A.Navin, F.Rejmund, K.-H.Schmidt, A.Lemasson, C.Schmitt, L.Gaudefroy, K.Sieja, L.Audouin, C.O.Bacri, G.Barreau, J.Benlliure, E.Casarejos, X.Derkx, B.Fernandez-Dominguez, C.Golabek, B.Jurado, T.Roger, J.Taieb

Prompt γ-ray spectroscopy of isotopically identified fission fragments

NUCLEAR REACTIONS 12C(238U, X), E=1.45 GeV; measured Eγ, Iγ using EXOGAM array, fission fragments using VAMOS detector. 134Xe; deduced levels, J, π. 100Zr, 106,107,108,109Ru, 133Xe, 138Xe; measured Eγ. Comparison with shell model calculations for Z>49, N<83 nuclei.

doi: 10.1103/PhysRevC.80.051305
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2008GA24      Phys.Rev. C 78, 034307 (2008)

L.Gaudefroy, O.Sorlin, F.Nowacki, D.Beaumel, Y.Blumenfeld, Z.Dombradi, S.Fortier, S.Franchoo, S.Grevy, F.Hammache, K.W.Kemper, K.L.Kratz, M.G.St.Laurent, S.M.Lukyanov, L.Nalpas, A.N.Ostrowski, Yu.-E.Penionzhkevich, E.C.Pollacco, P.Roussel, P.Roussel-Chomaz, D.Sohler, M.Stanoiu, E.Tryggestad

Structure of the N = 27 isotones derived from the 44Ar(d, p)45Ar reaction

NUCLEAR REACTIONS 40,44Ar(d, p), E=10 MeV/nucleon; measured proton spectra, σ(θ). 41,45Ar; deduced levels energies, angular momenta, spectroscopic factors. 41Si, 43S, 47Ca; systematics of excitation energies. Comparison with shell model calculations.

doi: 10.1103/PhysRevC.78.034307
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2008GO33      Int.J.Mod.Phys. E17, 2235 (2008)

C.Golabek, A.C.C.Villari, S.Heinz, W.Mittig, S.Bhattacharyya, D.Boilley, G.De France, A.Drouart, L.Gaudefroy, L.Giot, A.Marchix, V.Maslov, M.Morjean, G.Mukherjee, A.Navin, Yu.Penionzkevich, F.Rejmund, M.Rejmund, P.Roussel-Chomaz, C.Stodel

Search for a long living giant system in 238U + 238U collisions near the coulomb barrier

NUCLEAR REACTIONS 238U(238U, X), E=6.09-7.35 MeV/nucleon; measured mass spectra; deduced total kinetic energy loss, production yields, σ(θ).

doi: 10.1142/S0218301308011409
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2008PE09      Phys.Rev. C 77, 042801 (2008)

M.G.Pellegriti, F.Hammache, P.Roussel, L.Audouin, D.Beaumel, P.Descouvemont, S.Fortier, L.Gaudefroy, J.Kiener, A.Lefebvre-Schuhl, M.Stanoiu, V.Tatischeff, M.Vilmay

Indirect study of the 13C(α, n)16O reaction via the 13C(7Li, t)17O transfer reaction

NUCLEAR REACTIONS 13C(7Li, t), (7Li, 7Li), E=28, 34 MeV; measured σ(θ). 17O; deduced levels, J, α spectroscopic factors, asymptotic normalization factors. 12C(7Li, t), (7Li, 7Li), E=28 MeV; measured yields. 13C(α, n); deduced astrophysical S-factor, reaction rates. Comparison with recommended values. DWBA analysis.

doi: 10.1103/PhysRevC.77.042801
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2007RE19      Phys.Rev. C 76, 021304 (2007)

M.Rejmund, S.Bhattacharyya, A.Navin, W.Mittig, L.Gaudefroy, M.Gelin, G.Mukherjee, F.Rejmund, P.Roussel-Chomaz, Ch.Theisen

Shell evolution and the N = 34 "magic number"

NUCLEAR REACTIONS 48Ca(238U, X), E=1.31 GeV/nucleon; measured Eγ, Iγ, (particle)γ-coinc. 50,51,52Ca deduced levels, J, π. Compared results to model calculations.

doi: 10.1103/PhysRevC.76.021304
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2007VE08      Phys.Rev. C 76, 054312 (2007)

D.Verney, F.Ibrahim, C.Bourgeois, S.Essabaa, S.Gales, L.Gaudefroy, D.Guillemaud-Mueller, F.Hammache, C.Lau, F.Le Blanc, A.C.Mueller, O.Perru, F.Pougheon, B.Roussiere, J.Sauvage, O.Sorlin, for the PARRNe Collaboration

Low-energy states of 8131Ga50 Proton structure of the nuclei close to 78Ni

RADIOACTIVITY 81Zn, 81Ga, 81Ge, 81As (β-) [from U(d, F), E=26 MeV]; 81Zn, 81Ga (β-n); measured Eγ, Iγ, γγ-, βγ-coin, half-lives. 81Ga; deduced levels, J, π, configurations. 81Ga, 83As; calculated levels, J, π, configurations. 80Zn, 81Ga, 82Ge, 83As, 84Se, 85Br, 86Kr, 87Rb; systematics.

doi: 10.1103/PhysRevC.76.054312
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2006GA28      Phys.Rev.Lett. 97, 092501 (2006)

L.Gaudefroy, O.Sorlin, D.Beaumel, Y.Blumenfeld, Z.Dombradi, S.Fortier, S.Franchoo, M.Gelin, J.Gibelin, S.Grevy, F.Hammache, F.Ibrahim, K.W.Kemper, K.-L.Kratz, S.M.Lukyanov, C.Monrozeau, L.Nalpas, F.Nowacki, A.N.Ostrowski, T.Otsuka, Yu.-E.Penionzhkevich, J.Piekarewicz, E.C.Pollacco, P.Roussel-Chomaz, E.Rich, J.A.Scarpaci, M.G.St.Laurent, D.Sohler, M.Stanoiu, T.Suzuki, E.Tryggestad, D.Verney

Reduction of the Spin-Orbit Splittings at the N = 28 Shell Closure

NUCLEAR REACTIONS 2H(46Ar, p), E=10.7 MeV/nucleon; measured Ep, σ(E, θ), (Argon)p-coin, excitation energy spectra. 47Ar deduced single-neutron level energies, spectroscopic factors, shell gap reduction, spin-orbit interaction features.

doi: 10.1103/PhysRevLett.97.092501
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2006GA30      Eur.Phys.J. A 27, Supplement 1, 309 (2006)

L.Gaudefroy, O.Sorlin, D.Beaumel, Y.Blumenfeld, Z.Dombradi, S.Fortier, S.Franchoo, M.Gelin, J.Gibelin, S.Grevy, F.Hammache, F.Ibrahim, K.Kemper, K.L.Kratz, S.M.Lukyanov, C.Monrozeau, L.Nalpas, F.Nowacki, A.N.Ostrowski, Yu.-E.Penionzhkevich, E.Pollacco, P.Roussel-Chomaz, E.Rich, J.A.Scarpaci, M.G.St.Laurent, T.Rauscher, D.Sohler, M.Stanoiu, E.Tryggestad, D.Verney

Study of the N = 28 shell closure in the Ar isotopic chain: A SPIRAL experiment for nuclear astrophysics

NUCLEAR REACTIONS 2H(46Ar, 47Ar), E=10 MeV/nucleon; measured particle spectra, σ(E, θ). 47Ar deduced levels, spectroscopic factors. Astrophysical implications discussed.

doi: 10.1140/epja/i2006-08-047-0
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2006PE13      Phys.Rev.Lett. 96, 232501 (2006)

O.Perru, O.Sorlin, S.Franchoo, F.Azaiez, E.Bouchez, C.Bourgeois, A.Chatillon, J.M.Daugas, Z.Dlouhy, Zs.Dombradi, C.Donzaud, L.Gaudefroy, H.Grawe, S.Grevy, D.Guillemaud-Mueller, F.Hammache, F.Ibrahim, Y.Le Coz, S.M.Lukyanov, I.Matea, J.Mrazek, F.Nowacki, Yu.-E.Penionzhkevich, F.de Oliveira Santos, F.Pougheon, M.G.Saint-Laurent, G.Sletten, M.Stanoiu, C.Stodel, Ch.Theisen, D.Verney

Enhanced Core Polarization in 70Ni and 74Zn

NUCLEAR REACTIONS 208Pb(70Ni, 70Ni'), (74Zn, 74Zn'), (76Ge, 76Ge'), E not given; measured Eγ, Iγ, (particle)γ-coin following projectile Coulomb excitation. 70Ni, 74Zn deduced transitions B(E2), enhanced core polarization.

doi: 10.1103/PhysRevLett.96.232501
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2005GA01      Eur.Phys.J. A 23, 41 (2005)

L.Gaudefroy, O.Sorlin, C.Donzaud, J.C.Angelique, F.Azaiez, C.Bourgeois, V.Chiste, Z.Dlouhy, S.Grevy, D.Guillemaud-Mueller, F.Ibrahim, K.-L.Kratz, M.Lewitowicz, S.M.Lukyanov, I.Matea, J.Mrazek, F.Nowacki, F.de Oliveira Santos, Yu.-E.Penionzhkevich, B.Pfeiffer, F.Pougheon, M.G.Saint-Laurent, M.Stanoiu

Beta-decay studies of neutron-rich Sc-Cr nuclei

RADIOACTIVITY 57,58Sc, 58,59,60Ti, 61V, 62,63,64,65,66Cr(β-) [from 58Ni(76Ge, X)]; measured Eγ, Eβ, βγ-coin, T1/2. 58V, 61Cr, 62Mn deduced levels, J, π. 58V, 61Cr, 62,63,64,65Mn deduced transitions. 60V, 62Mn deduced isomeric states. Comparison with model predictions.

NUCLEAR REACTIONS 58Ni(76Ge, X)57Sc/58Sc/58Ti/59Ti/60Ti/60V/61V/62V/63V/62Cr/63Cr/64Cr/65Cr/66Cr/65Mn/66Mn, E=61.8 MeV/nucleon; measured yields.

doi: 10.1140/epja/i2004-10068-x
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2005GA45      J.Phys.(London) G31, S1623 (2005)

L.Gaudefroy, O.Sorlin, D.Beaumel, Y.Blumenfeld, Z.Dombradi, S.Fortier, S.Franchoo, M.Gelin, J.Gibelin, S.Grevy, F.Hammache, F.Ibrahim, K.Kemper, K.L.Kratz, S.M.Lukyanov, C.Monrozeau, L.Nalpas, F.Nowacki, A.N.Ostrowski, Yu.-E.Penionzhkevich, E.Pollacco, P.Roussel-Chomaz, E.Rich, J.A.Scarpaci, M.G.St Laurent, D.Sohler, M.Stanoiu, E.Tryggestad, D.Verney

Study of 45Ar through (d, p) reaction at SPIRAL

NUCLEAR REACTIONS 2H(44Ar, 45Ar), (40Ar, 41Ar), E=10 MeV/nucleon; measured particle spectra, σ(E, θ). 45Ar deduced levels, spectroscopic factors.

doi: 10.1088/0954-3899/31/10/044
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2005KO43      Eur.Phys.J. A 25, Supplement 1, 729 (2005)

U.Koster, O.Arndt, U.C.Bergmann, R.Catherall, J.Cederkall, I.Dillmann, M.Dubois, F.Durantel, L.Fraile, S.Franchoo, G.Gaubert, L.Gaudefroy, O.Hallmann, C.Huet-Equilbec, B.Jacquot, P.Jardin, K.L.Kratz, N.Lecesne, R.Leroy, A.Lopez, L.Maunoury, J.Y.Pacquet, B.Pfeiffer, M.G.Saint-Laurent, C.Stodel, A.C.C.Villari, L.Weissman

ISOL beams of neutron-rich oxygen isotopes

NUCLEAR REACTIONS U(p, X)19O/20O/21O/22O, E=1.4GeV; measured yields.

doi: 10.1140/epjad/i2005-06-199-4
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2005WE06      J.Phys.(London) G31, 553 (2005)

L.Weissman, A.F.Lisetskiy, O.Arndt, U.Bergmann, B.A.Brown, J.Cederkall, I.Dillmann, O.Hallmann, L.Fraile, S.Franchoo, L.Gaudefroy, U.Koster, K.-L.Kratz, B.Pfeiffer, O.Sorlin, and the ISOLDE Collaboration

β-decay of 22O

RADIOACTIVITY 22O, 22F(β-) [from U(p, X) and subsequent decay]; measured Eγ, Iγ, γγ-, βγ-coin, T1/2. 22F deduced levels, J, π, β-feeding intensities. 22Ne deduced transitions. Mass separator, comparison with model predictions.

doi: 10.1088/0954-3899/31/7/002
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2004SO30      Eur.Phys.J. A 22, 173 (2004)

O.Sorlin, Zs.Dombradi, D.Sohler, F.Azaiez, J.Timar, Yu.-E.Penionzhkevich, F.Amorini, D.Baiborodin, A.Bauchet, F.Becker, M.Belleguic, C.Borcea, C.Bourgeois, Z.Dlouhy, C.Donzaud, J.Duprat, L.Gaudefroy, D.Guillemaud-Mueller, F.Ibrahim, M.J.Lopez, R.Lucas, S.M.Lukyanov, V.Maslov, J.Mrazek, C.Moore, F.Nowacki, F.Pougheon, M.G.Saint-Laurent, F.Sarazin, J.A.Scarpaci, G.Sletten, M.Stanoiu, C.Stodel, M.Taylor, Ch.Theisen

Structure of the neutron-rich 37, 39P and 43, 45Cl nuclei

NUCLEAR REACTIONS 9Be(48Ca, X)37P/39P/43Cl/45Cl, E=60.3 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin. 37,39P, 43,45Cl deduced levels, J, π. Comparison with shell model predictions.

doi: 10.1140/epja/i2004-10019-7
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2004VE14      Braz.J.Phys. 34, 979 (2004)

D.Verney, F.Ibrahim, O.Perru, O.Bajeat, C.Bourgeois, F.Clapier, E.Cottereau, C.Donzaud, S.Du, M.Ducourtieux, S.Essabaa, S.Gales, L.Gaudefroy, D.Guillemaud-Mueller, F.Hammache, F.Hosni, C.Lau, H.Lefort, F.Le Blanc, A.C.Mueller, N.Pauwels, J.C.Potier, F.Pougheon, J.Proust, B.Roussiere, J.Sauvage, O.Sorlin

Study of the N=50 Shell Closure Close to 78Ni

RADIOACTIVITY 83Ga, 81Zn(β-) [from U(d, X)]; measured Eγ, Iγ, γγ-, βγ-coin, T1/2. 81Ga, 83As deduced levels.

doi: 10.1590/S0103-97332004000500075
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2004WE09      Phys.Rev. C 70, 024304 (2004)

L.Weissman, O.Arndt, U.Bergmann, A.Brown, R.Catherall, J.Cederkall, I.Dillmann, O.Hallmann, L.Fraile, S.Franchoo, L.Gaudefroy, U.Koster, K.-L.Kratz, B.Pfeiffer, O.Sorlin

β decay of 47Ar

RADIOACTIVITY 47Ar(β-) [from 238U(p, X)]; measured Eγ, Iγ, T1/2; deduced logft, neutron emission probability upper limit. 47Ar deduced ground-state J, π. 47K deduced levels, J, π.

doi: 10.1103/PhysRevC.70.024304
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2004WE11      Phys.Rev. C 70, 057306 (2004)

L.Weissman, O.Arndt, U.Bergmann, J.Cederkall, I.Dillmann, O.Hallmann, L.Fraile, S.Franchoo, L.Gaudefroy, U.Koster, K.L.Kratz, A.F.Lisetskiy, B.Pfeiffer, O.Sorlin, S.Tabor

β decay of 26Ne

RADIOACTIVITY 26Ne(β-) [from U(p, F)]; measured β-delayed Eγ, Iγ, γγ-, βγ-coin, T1/2; deduced log ft. 26Na deduced levels, J, π, β-feeding intensities.

doi: 10.1103/PhysRevC.70.057306
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2003SO21      Nucl.Phys. A719, 193c (2003)

O.Sorlin, C.Donzaud, F.Azaiez, C.Bourgeois, L.Gaudefroy, F.Ibrahim, D.Guillemaud-Mueller, F.Pougheon, M.Lewitowicz, F.de Oliveira-Santos, M.G.Saint-Laurent, M.Stanoiu, S.M.Lukyanov, Yu.E.Penionzhkevich, J.C.Angelique, S.Grevy, K.-L.Kratz, B.Pfeiffer, F.Nowacki, Z.Dlouhy, J.Mrazek

Beta decay studies of neutron-rich 21Sc - 27Co nuclei at GANIL

RADIOACTIVITY 57,58Sc, 58,59,60Ti, 63,64,65,66Cr, 65,66,67,68Mn, 68,69,70Fe, 70,71Co(β-) [from 58Ni(76Ge, X)]; measured Eβ, Eγ, T1/2. 60,62Cr deduced levels. Mass separator.

doi: 10.1016/S0375-9474(03)00916-3
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