NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = A.Giannatiempo Found 40 matches. 2020GI09 Phys.Rev. C 102, 064316 (2020) Ground state and quasi-γ bands in the even Ba chain NUCLEAR STRUCTURE 118,120,122,124,126,128,130,132,134,142,144,146,148,150Ba; calculated energy levels, J, π for ground and γ bands, B(E2), B(M1), γ-branching ratios, E2/M1 mixing ratios, magnetic dipole moments μ and electric quadrupole moments Q for the ground states, signature splittings using IBA-2 model. Comparison with experimental data. Analyzed relevant wave functions in terms of F-spin and components, U(5) to SU(3) evolution of neutron-deficient and neutron-rich isotopes away from the N=82 closed shell; deduced different symmetry in the proton and neutron degrees of freedom for the ground and quasi-γ bands. Z=52, N=56-88; Z=54, N=56-90; Z=56, N=62-94; Z=58, N=64-94; Z=60, N=68-100; systematics of E(first 4+)/E(first 2+) in even-even nuclei.
doi: 10.1103/PhysRevC.102.064316
2018GI10 Phys.Rev. C 98, 034305 (2018) Vibrational-γ bands in even 104-118isotopes NUCLEAR STRUCTURE 104,106,108,110,112,114,116,118Pd; calculated levels, J, π, B(M1), B(E2), mixing ratios, quadrupole moments; analyzed relevant wave functions in terms of F-spin and nd components in the vibrational γ bands using the IBA-2 model. Comparison with experimental data. Discussed role of mixed symmetry (MS) character in the proton and neutron degrees of freedom.
doi: 10.1103/PhysRevC.98.034305
2017GI13 Phys.Rev. C 96, 044326 (2017) Structure of 98Ru in the IBA-2 interacting boson model NUCLEAR STRUCTURE 98Ru; calculated levels, J, π, magnetic dipole and electric quadrupole moments, B(E2), B(M1), E2/M1 mixing ratios using IBA-2 model. Comparison with experimental values. Discussed U(5) symmetry and mixed-symmetry states.
doi: 10.1103/PhysRevC.96.044326
2016GI05 Phys.Rev. C 94, 054327 (2016) A.Giannatiempo, A.Nannini, A.Perego, P.Sona Spectroscopy of 98Ru NUCLEAR REACTIONS 97Mo(3He, 2n), E=13 MeV; measured Eγ, Iγ, conversion electrons using a magnetic transport system and Si(Li) detector, γγ-coin, γ(θ), γγ(θ) at the CN accelerator of Laboratori Nazionali di Legnaro (Padua). 98Ru; deduced levels, J, π, K-conversion coefficients, multipolarities, mixing ratios.
doi: 10.1103/PhysRevC.94.054327
2013GI03 Eur.Phys.J. A 49, 37 (2013) Gyromagnetic factors in the even Ru and Pd chains NUCLEAR STRUCTURE 96,98,100,102,104,106,108,110,112Ru, 100,102,104,106,108,110,112,114,116Pd; calculated 2+ energy, g-factors using IBA-2. Compared with calculations using other models and with data.
doi: 10.1140/epja/i2013-13037-4
2012GI02 Phys.Rev. C 86, 034311 (2012) A.Giannatiempo, L.Fortunato, A.Vitturi Spherical to prolate axially symmetric shape transition, Uπν(5) → SUπν(3), in the interacting boson model IBA-2 NUCLEAR STRUCTURE 144,146,148,150,152,154,156Nd; calculated levels, J, π, ground-state, quasi-β, and quasi-γ bands, potential energy surface contours, levels, B(E2) using IBA-2 model. Comparison with X(5) model predictions, and with experimental data.
doi: 10.1103/PhysRevC.86.034311
2011GI06 Phys.Rev. C 84, 024308 (2011) Heavy neodymium isotopes in the interacting boson (IBA-2) model NUCLEAR STRUCTURE 144,146,148,150,152,154,156Nd; calculated levels, quadrupole moments, B(E2), B(M1), δ(E2/M1), branching ratios. Neutron-proton Interacting boson model. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.024308
2011GI08 Phys.Rev. C 84, 034319 (2011) Gyromagnetic factors in 144-150Nd NUCLEAR STRUCTURE 144,146,148,150Nd; calculated energies, g-factors, reduced matrix elements, quadrupole moments, and B(E2) values of the first 2+ states. Interacting boson approximation (IBA-2) model, U(5) to SU(3) evolution. Comparison with experimental data.
doi: 10.1103/PhysRevC.84.034319
2010BI11 Phys.Rev. C 82, 054311 (2010) P.G.Bizzeti, A.M.Bizzeti-Sona, D.Tonev, A.Giannatiempo, C.A.Ur, A.Dewald, B.Melon, C.Michelagnoli, P.Petkov, D.Bazzacco, A.Costin, G.de Angelis, F.Della Vedova, M.Fantuzi, E.Farnea, C.Fransen, A.Gadea, S.Lenzi, S.Lunardi, N.Marginean, R.Marginean, R.Menegazzo, D.Mengoni, O.Moller, A.Nannini, D.R.Napoli, M.Nespolo, P.Pavan, A.Perego, C.M.Petrache, N.Pietralla, C.Rossi Alvarez, P.Sona Transition probabilities in the X(5) candidate 122Ba NUCLEAR REACTIONS 108Cd(16O, 2n), E=62, 64, 65 MeV; 112Sn(13C, 3n), E=59 MeV; measured Eγ, Iγ, γγ-coin, half-lives by recoil-distance Doppler-shift (RDDS) method using plunger device, and differential decay curve method (DDCM). 122Ba; deduced levels, B(E2). Comparison with X(5), IBA-1 and IBA-2 model calculations.
doi: 10.1103/PhysRevC.82.054311
2005GI17 Phys.Rev. C 72, 044308 (2005) A.Giannatiempo, A.Perego, P.Sona, A.Nannini, H.Mach, B.Fogelberg, M.J.G.Borge, O.Tengblad, L.M.Fraile, A.J.Aas, K.Gulda Spectroscopy and lifetime measurements of states in 76Kr populated in 76Rb decay RADIOACTIVITY 76Rb(β+), (EC) [from Nb(p, X)]; measured Eγ, Iγ, E(ce), I(ce), γγ-, βγ-coin; deduced log ft. 76Kr deduced levels J, π, T1/2, ICC. 76Rb deduced ground state J, π.
doi: 10.1103/PhysRevC.72.044308
2004GI10 Eur.Phys.J. A 21, 237 (2004) A.Giannatiempo, A.Nannini, P.Sona Symmetry character of positive-parity bands in neutron-rich even palladium isotopes NUCLEAR STRUCTURE 110,112,114,116Pd; analyzed levels, J, π, rotational bands; deduced parameters, mixed-symmetry components. 118Pd; calculated levels, J, π. IBA-2 model.
doi: 10.1140/epja/i2003-10213-1
2002GI05 Eur.Phys.J. A 13, 339 (2002) A.Giannatiempo, A.Nannini, A.Perego, P.Sona Symmetry Character of Collective States in 104Pd Populated in the EC-β+ Decay of 104Ag NUCLEAR STRUCTURE 104Pd; calculated levels, J, π, configuration, for states populated in decay of 104Ag. Comparison with data, proton-neutron interacting boson model results.
doi: 10.1007/s10050-002-8762-9
2001BE26 Phys.Rev. C63, 064313 (2001) M.E.Bellizzi, A.Giannatiempo, A.Nannini, A.Perego, P.Sona Angular Correlations and Internal Conversion Coefficients of γ-Ray Transitions in 104Pd RADIOACTIVITY 104,104mAg(β+)(EC) [from 104Pd(p, n)]; measured Eγ, Iγ, E(ce), I(ce), γγ-coin, angular correlations. 104Pd deduced levels, J, π, ICC, δ.
doi: 10.1103/PhysRevC.63.064313
2000GI16 Phys.Rev. C62, 044302 (2000) A.Giannatiempo, P.Sona, A.Nannini Symmetry Character of Bands in 72-84Kr in the Proton-Neutron Interacting Boson Model NUCLEAR STRUCTURE 72,74,76,78,80,82,84Kr; calculated rotational bands level energies, J, π, transitions B(E2), B(M1). IBA-2 model.
doi: 10.1103/PhysRevC.62.044302
1998GI18 Phys.Rev. C58, 3316 (1998) A.Giannatiempo, A.Nannini, P.Sona Interacting Boson Approximation-2 Analysis of the Pd and Ru Chains. I. Mixed Symmetry States of Fmax-1 Character in Even Palladium Isotopes NUCLEAR STRUCTURE 100,102,104,106,108,110,112,114,116Pd; calculated levels configurations, transitions B(λ), δ; deduced parity-mixing components. IBA-2 model, U(5) limit.
doi: 10.1103/PhysRevC.58.3316
1998GI19 Phys.Rev. C58, 3335 (1998) A.Giannatiempo, A.Nannini, P.Sona Interacting Boson Approximation-2 Analysis of the Pd and Ru Chains. II. Mixed Symmetry States of F < Fmax-1 Character in Even Palladium and Ruthenium Isotopes NUCLEAR STRUCTURE 100,102,104,106,108,110,112,114,116Pd, 98,100,102,104,106,108,110,112,114Ru; analyzed levels, transitions B(λ), δ; deduced low-lying F < F(max)-1 mixed symmetry states. IBA-2 approach.
doi: 10.1103/PhysRevC.58.3335
1996GI04 Phys.Rev. C53, 2770 (1996) A.Giannatiempo, A.Nannini, A.Perego, P.Sona, D.Cutoiu Spin-Parity Assignments and Evidence for Mixed-Symmetry States in 100Ru RADIOACTIVITY 100Rh(β+), (EC) [from 100Ru(p, n)]; measured I(ce), Eγ, Iγ. 100Ru deduced levels, ICC, J, π, γ-branching ratio. Interacting boson model.
doi: 10.1103/PhysRevC.53.2770
1995GI13 Phys.Rev. C52, 2444 (1995) A.Giannatiempo, A.Nannini, A.Perego, P.Sona, M.J.G.Borge, O.Tengblad, and the ISOLDE Collaboration Decay Properties of the 0+2 State and Spin-Parity Assignments in 78Kr RADIOACTIVITY 78Rb(β+), (EC); measured I(ce), Iγ, Eγ, DSA. 78Kr deduced levels, J, π, T1/2, ρ2(E0), ICC. Interacting boson model.
doi: 10.1103/PhysRevC.52.2444
1995GI14 Phys.Rev. C52, 2969 (1995) A.Giannatiempo, A.Nannini, P.Sona, D.Cutoiu Full-Symmetry and Mixed-Symmetry States in Even Ruthenium Isotopes NUCLEAR STRUCTURE 98,100,102,104,106,108,110,112,114Ru; calculated levels, B(λ), electric quadrupole moments, γ branching ratios, γ strength function. Interacting boson model approach.
doi: 10.1103/PhysRevC.52.2969
1993FA11 Z.Phys. A346, 21 (1993) T.F.Fazzini, A.Giannatiempo, A.Nannini, A.Perego, D.Cutoiu Search for the Lowest 2+ Mixed-Symmetry State in 102Ru RADIOACTIVITY 102Rh(EC) [from 102Ru(p, n), E=6 MeV]; measured I(ce), Eγ, Iγ. 102Ru deduced level, J, π, K-shell ICC, B(λ) ratio.
doi: 10.1007/BF01290777
1993GI01 Phys.Rev. C47, 521 (1993) A.Giannatiempo, A.Nannini, A.Perego, P.Sona, M.J.G.Borge, K.Riisager, O.Tengblad, and the ISOLDE Collaboration Decay of the 0+2 State in 80Kr RADIOACTIVITY 80Rb(β+); measured I(ce), Eγ, Iγ, DSA. 80Kr deduced level T1/2, B(E2), electric monopole strength. Model comparison. NUCLEAR STRUCTURE 78,80,82Kr; calculated levels, B(λ). Interacting boson model.
doi: 10.1103/PhysRevC.47.521
1993GI06 Phys.Rev. C48, 2657 (1993) A.Giannatiempo, G.Maino, A.Nannini, P.Sona Signatures for Mixed-Symmetry States in the U(5) Limit of the Neutron-Proton Interacting Boson Model
doi: 10.1103/PhysRevC.48.2657
1991GI04 Phys.Rev. C44, 1508 (1991) A.Giannatiempo, A.Nannini, A.Perego, P.Sona, G.Maino Full-Symmetry and Mixed-Symmetry States in 110,112,114Cd NUCLEAR STRUCTURE 110,112,114Cd; calculated levels, B(λ), effective quadrupole charges, g-factors. Interacting boson model.
doi: 10.1103/PhysRevC.44.1508
1991GI05 Phys.Rev. C44, 1844 (1991) A.Giannatiempo, A.Nannini, A.Perego, P.Sona E0 Components of 2+(i) → 2+(f) Transitions in Even Cadmium Isotopes and Effective Monopole Charges RADIOACTIVITY 110,112In(β+), (EC); measured I(ce), Eγ, Iγ. 110,112Cd transitions deduced ICC. Model analysis. NUCLEAR STRUCTURE 110,112,114Cd; calculated effective monopole charges; analyzed data; deduced monopole strength parameter, B(λ) ratios. Interacting boson model.
doi: 10.1103/PhysRevC.44.1844
1990GI01 Phys.Rev. C41, 1167 (1990) A.Giannatiempo, A.Nannini, A.Perego, P.Sona 02+ and 03+ States in 110Cd RADIOACTIVITY 110In(β+) [from 110Cd(p, n)]; measured I(ce), Iγ. 110Cd levels deduced B(E0)/B(E2). Interacting boson model, configuration mixing. NUCLEAR STRUCTURE 110Cd; calculated levels, B(λ) ratios. Interacting boson model, configuration mixing.
doi: 10.1103/PhysRevC.41.1167
1989BI02 Phys.Lett. 221B, 99 (1989) M.Bini, T.Fazzini, A.Giannatiempo, G.Poggi, P.Sona, N.Taccetti, K.Elsener, P.G.Hansen, E.Uggerhoj A Sensitive Search for the Emission of a Neutral Particle in the Decay of the First Excited State in 16O NUCLEAR REACTIONS 19F(p, α), E=1.73 MeV; measured invariant mass spectra. 16O level deduced neutral particle emission branching upper limit.
doi: 10.1016/0370-2693(89)90200-1
1987GI09 Phys.Rev. C36, 2528 (1987) A.Giannatiempo, A.Nannini, A.Perego, P.Sona Electric Monopole Transitions in 122Te RADIOACTIVITY 122I(β+) [from 122Te(p, n), E=7 MeV]; measured I(ce), Iγ, Eγ. 122Te deduced levels, J, π, B(E0)/B(E2). Interacting boson model.
doi: 10.1103/PhysRevC.36.2528
1986GI04 Phys.Rev. C33, 1024 (1986) A.Giannatiempo, A.Passeri, A.Perego, P.Sona Electric Monopole Transitions in 102Ru RADIOACTIVITY 102Rh(β+) [from 102Ru(p, n)]; measured I(ce), Iγ, Eγ. 102Ru levels deduced B(E0)/(E2), E0 transition strengths, upper limits. Interacting Boson model.
doi: 10.1103/PhysRevC.33.1024
1986GI12 Z.Phys. A325, 157 (1986) A.Giannatiempo, A.Nannini, A.Passeri, A.Perego, P.Sona Electric Monopole Transitions in 76Se RADIOACTIVITY 76Br(β+), (EC) [from 76Se(p, n), E=15 MeV]; measured I(ce), γ-spectra. 76Se deduced levels, γ-branching, γ transitions, ICC, B(E0)/B(E2), E0 transition strength parameter.
1984GI07 Z.Phys. A317, 79 (1984) Effective Gyromagnetic Ratios in Odd Thallium Isotopes NUCLEAR STRUCTURE 201,203,205Tl; analyzed low lying level magnetic properties data; deduced effective g(l), g(s), g(R). Intermediate coupling model.
doi: 10.1007/BF01420451
1984GI13 Z.Phys. A319, 153 (1984) A.Giannatiempo, A.Perego, A.Passeri Penetration Effects in 111Cd RADIOACTIVITY 111In(EC) [from 111Cd(p, n), E=4 MeV]; measured I(ce), Eγ, Iγ. 111Cd transitions deduced penetration parameters, K-conversion line intensity ratios.
doi: 10.1007/BF01415628
1982GI04 Z.Phys. A306, 57 (1982) A.Giannatiempo, A.Perego, P.Sona Penetration Effects in 107Cd RADIOACTIVITY 107,109Cd [from 107,109Ag(p, n), E=6 MeV]; measured Eγ, Iγ, I(ce). 107Cd deduced ICC for E2/M1 mixed transition, penetration parameter, effective core polarization dependent g.
doi: 10.1007/BF01413408
1982GI07 Nuovo Cim. 70A, 15 (1982) A.Giannatiempo, A.Perego, P.Sona Penetration Effects in the K-Conversion Process of the 203 keV Transition in 109Cd RADIOACTIVITY 109Cd(EC) [from 109Ag(p, n), E=6 MeV]; measured I(ce), Eγ, Iγ, ICC; deduced penetration parameter.
1982GI11 Z.Phys. A308, 247 (1982) Penetration Effects in the Internal Conversion Process of the 204 keV Transition in 205Tl NUCLEAR REACTIONS 203,205Tl(p, p'), E=3 MeV; measured I(ce). 205Tl transition deduced subshell ICC, penetration effects, δ(E2/M1).
doi: 10.1007/BF01418287
1979GI05 Z.Phys. A290, 411 (1979) A.Giannatiempo, G.Liberati, P.Sona The 01+ → 0+ Electric Monopole Transition in 112Cd RADIOACTIVITY 112mIn [from 112Cd(p, n), E=6.5-7 MeV]; measured I(ce). 112Cd levels deduced electric monopole transition, B(E2)/B(E0). Macroscopic model interpretation.
doi: 10.1007/BF01408405
1978FA09 Lett.Nuovo Cim. 22, 593 (1978) T.Fazzini, A.Giannatiempo, P.R.Maurenzig Search for a 1/2- Level at 1.29 MeV in 55Mn NUCLEAR REACTIONS 55Mn(α, α'γ), E=4.5-7 MeV; measured Coulomb excitation. 55Mn deduced levels, B(E2).
doi: 10.1007/BF02790645
1974FA09 Nuovo Cim. 23A, 304 (1974) T.Fazzini, A.Giannatiempo, P.R.Maurenzig Conversion Coefficient Measurements in 49V NUCLEAR REACTIONS 49Ti(p, nγ), E=3.6-5.2 MeV; measured Eγ, Iγ, I(ce). 49V levels deduced J, π, ICC, λ.
doi: 10.1007/BF02739485
1973BL11 Nuovo Cim. 15A, 521 (1973) P.Blasi, T.Fazzini, A.Giannatiempo, R.B.Huber, C.Signorini Low-Lying Levels in 47V NUCLEAR REACTIONS 40Ca(10B, n2pγ), E=25 MeV; 47Ti(p, nγ), E=3.6-5.3 MeV; measured γγ-coin, Eγ, recoil distance. 47V deduced levels, J, π, T1/2, γ-multipolarities, ICC.
doi: 10.1007/BF02734687
1972CA31 Nucl.Instrum.Methods 103, 331 (1972) A.Cambi, T.F.Fazzini, A.Giannatiempo, P.R.Maurenzig A Compact Electron Spectrometer for in-Beam Measurements of Internal Conversion Coefficients
doi: 10.1016/0029-554X(72)90391-6
1971CA36 Lett.Nuovo Cim. 2, 537 (1971) A.Cambi, T.Fazzini, A.Giannatiempo, P.R.Maurenzig Spin and Parity of Some Excited States of 48Sc NUCLEAR REACTIONS 48Ca(p, nγ), E=1964, 1975 keV; measured ICC. 48Sc levels deduced ICC, γ-multipolarity, J.
doi: 10.1007/BF02774088
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