NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = J.P.Ramos Found 10 matches. 2023MO04 Phys.Lett. B 838, 137675 (2023) L.Morrison, K.Hadynska-Klek, Zs.Podolyak, L.P.Gaffney, M.Zielinska, B.A.Brown, H.Grawe, P.D.Stevenson, T.Berry, A.Boukhari, M.Brunet, R.Canavan, R.Catherall, J.Cederkall, S.J.Colosimo, J.G.Cubiss, H.De Witte, D.T.Doherty, Ch.Fransen, G.Georgiev, E.Giannopoulos, M.Gorska, H.Hess, L.Kaya, T.Kroll, N.Lalovic, B.Marsh, Y.Martinez Palenzuela, G.O'Neill, J.Pakarinen, J.P.Ramos, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Rudigier, M.Siciliano, E.C.Simpson, J.Snall, P.Spagnoletti, S.Thiel, N.Warr, F.Wenander, R.Zidarova Quadrupole and octupole collectivity in the semi-magic nucleus 20680Hg126 NUCLEAR REACTIONS 94Mo, 104Pd(206Hg, 206Hg'), E=4.195 MeV/nucleon; measured reaction products, Eγ, Iγ. 206Hg; deduced γ-ray energies, B(E2), B(E3). Comparison with shell model predictions, systematics. The HIE-ISOLDE facility at CERN.
doi: 10.1016/j.physletb.2023.137675
2022BA22 Eur.Phys.J. A 58, 94 (2022) J.Ballof, K.Chrysalidis, Ch.E.Dullmann, V.Fedosseev, E.Granados, D.Leimbach, B.A.Marsh, J.P.Ramos, A.Ringvall-Moberg, S.Rothe, T.Stora, S.G.Wilkins, A.Yakushev A concept for the extraction of the most refractory elements at CERN-ISOLDE as carbonyl complex ions
doi: 10.1140/epja/s10050-022-00739-1
2022CO10 Appl.Radiat.Isot. 190, 110480 (2022) S.M.Collins, A.P.Robinson, P.Ivanov, U.Koster, T.E.Cocolios, B.Russell, B.Webster, A.J.Fenwick, C.Duchemin, J.P.Ramos, E.Chevallay, U.Jakobsson, S.Stegemann, P.H.Regan, T.Stora Half-life determination of 155Tb from mass-separated samples produced at CERN-MEDICIS RADIOACTIVITY 155Tb(EC) [from Ta(p, X), E=1.4 GeV]; measured decay products, Eγ, Iγ; deduced T1/2. Comparison with available data. The Proton Synchrotron Booster accelerator at CERN, the target foil was delivered to NPL.
doi: 10.1016/j.apradiso.2022.110480
2021DA16 Phys.Rev. C 104, 054322 (2021) T.Day Goodacre, A.V.Afanasjev, A.E.Barzakh, L.Nies, B.A.Marsh, S.Sels, U.C.Perera, P.Ring, F.Wienholtz, A.N.Andreyev, P.Van Duppen, N.A.Althubiti, B.Andel, D.Atanasov, R.S.Augusto, J.Billowes, K.Blaum, T.E.Cocolios, J.G.Cubiss, G.J.Farooq-Smith, D.V.Fedorov, V.N.Fedosseev, K.T.Flanagan, L.P.Gaffney, L.Ghys, A.Gottberg, M.Huyse, S.Kreim, P.Kunz, D.Lunney, K.M.Lynch, V.Manea, Y.Martinez Palenzuela, T.M.Medonca, P.L.Molkanov, M.Mougeot, J.P.Ramos, M.Rosenbusch, R.E.Rossel, S.Rothe, L.Schweikhard, M.D.Seliverstov, P.Spagnoletti, C.Van Beveren, M.Veinhard, E.Verstraelen, A.Welker, K.Wendt, R.N.Wolf, A.Zadvornaya, K.Zuber Charge radii, moments, and masses of mercury isotopes across the N=126 shell closure NUCLEAR MOMENTS 198,202,203,206,207,208Hg; measured hyperfine structure spectra using Versatile Arc Discharge and Laser Ion Source (VADLIS) in CERN-ISOLDE Resonance Ionization Laser Ion Source (RILIS) mode; deduced isotope shifts (δν) and charge radii (δ<r2) with respect to 198Hg, hyperfine factors a and b, static magnetic dipole (μ) and electric quadrupole (Q) moments for the ground states of 203Hg and 207Hg, Comparison of g factors with Schmidt values for 207Hg, 209Pb, 210Bi and 211Po, and charge radii, and odd-even staggering (OES) of the mean square charge radii with relativistic Hartree-Bogoliubov (RHB) calculations using DD-ME2, DD-MEδ, DD-PC1 and NL3* covariant energy-density functionals for 197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214Pb, 201,202,203,204,205,206,207,208,209,210Hg. Source of Hg isotopes were produced in Pb(p, X), E=1.4 GeV reaction, and using VADLIS+RILIS ion source, followed by separation of fragments using ISOLDE General Purpose Separator. 183,184,185,202,203,206,207,208Hg; measured ionization and release efficiency as a function of the half-life of mercury isotopes from a molten lead target, and compared with ABRABLA, FLUKA, and GEANT4 simulations. ATOMIC MASSES 206,207,208Hg, 208Pb; measured time-of-flight ion-cyclotron resonances, with reference to 208Pb using the RILIS+VADIS ion source and ISOLTRAP MR-ToF mass spectrometer (MS) at CERN-ISOLDE; deduced mass excesses for 206,207,208Hg, and compared with AME2020 values.
doi: 10.1103/PhysRevC.104.054322
2020CH32 Eur.Phys.J. A 56, 204 (2020) D.Choudhury, S.Lahiri, N.Naskar, M.Delonca, T.Stora, J.P.Ramos, E.Aubert, A.Dorsival, J.Vollaire, R.Augusto, A.Ferrari Quantification of radioisotopes produced in 1.4 GeV proton irradiated lead-bismuth eutectic targets NUCLEAR REACTIONS Pb, 209Bi(p, X), E=1.4 GeV; measured reaction products, Eγ, Iγ. 69Zn, 72Ga, 76Br, 82Br, 86,87Y, 89Zr, 95Tc, 96Nb, 100,101Rh, 119Te, 146Eu, 147Gd, 151Tb, 153Dy, 157Dy, 165Tm, 169Lu, 170Hf, 173Hf, 175,176Ta, 181,182Re, 182,183Os, 186,187Ir, 189Pt, 191Pt, 192Au, 193Hg, 195Hg, 196Au, 198,199,200,201Tl, 200,201Pb, 203Pb, 203,204Bi, 209At; deduced quantitative yields. Comparison with FLUKA calculations.
doi: 10.1140/epja/s10050-020-00191-z
2020MO35 Phys.Rev. C 102, 054304 (2020) L.Morrison, K.Hadynska-Klek, Zs.Podolyak, D.T.Doherty, L.P.Gaffney, L.Kaya, L.Prochniak, J.Samorajczyk-Pysk, J.Srebrny, T.Berry, A.Boukhari, M.Brunet, R.Canavan, R.Catherall, S.J.Colosimo, J.G.Cubiss, H.De Witte, Ch.Fransen, E.Giannopoulos, H.Hess, T.Kroll, N.Lalovic, B.Marsh, Y.Martinez Palenzuela, P.J.Napiorkowski, G.O'Neill, J.Pakarinen, J.P.Ramos, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Rudigier, M.Siciliano, J.Snall, P.Spagnoletti, S.Thiel, N.Warr, F.Wenander, R.Zidarova, M.Zielinska Quadrupole deformation of 130Xe measured in a Coulomb-excitation experiment NUCLEAR REACTIONS 94Mo(130Xe, 130Xe'), E=4.195 MeV/nucleon from HIE-ISOLDE-CERN linear accelerator; measured projectile-and target-like particles using a segmented double-sided silicon strip detector (DSSSD), Eγ, Iγ, γ(θ) (particle)γ- and (particle)(particle)γ-coin using Miniball array of 23 HPGe detectors. Measured Coulomb excitation yields analyzed using GOSIA least-squares fitting code. 130Xe; deduced levels, J, π, E2 and M1 matrix elements, B(E2), B(M1), spectroscopic quadrupole moments (Q) for the first 2+ and 4+ states and second 2+ state, and shape parameters for the 0+ ground state. Comparison with previous experimental data, and with several theoretical model calculations. NUCLEAR STRUCTURE 130Xe; calculated levels, J, π using general Bohr Hamiltonian with the mean-field theory and Universal Nuclear Energy Density Functional (UNEDF0), shell-model with the GCN50:82 and SN100PN interactions, Davydov-Filippov and γ-soft phenomenological models; calculated quadrupole shape invariants for 0+ ground state and the first 2+ state using general Bohr Hamiltonian (GBH) model. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.054304
2019BA23 Eur.Phys.J. A 55, 65 (2019) J.Ballof, C.Seiffert, B.Crepieux, Ch.E.Dullmann, M.Delonca, M.Gai, A.Gottberg, T.Kroll, R.Lica, M.Madurga Flores, Y.Martinez Palenzuela, T.M.Mendonca, M.Owen, J.P.Ramos, S.Rothe, T.Stora, O.Tengblad, F.Wienholtz Radioactive boron beams produced by isotope online mass separation at CERN-ISOLDE ATOMIC PHYSICS 8B(n, α), (p, α), E not given[target in the 8BF2 form]; measured Eα, Iα; deduced α-particle energy spectrum from (n, α) reaction, released activity vs time after irradiation in (p.α); compared with data of Roger et al.
doi: 10.1140/epja/i2019-12719-1
2019CH46 Eur.Phys.J. A 55, 173 (2019) K.Chrysalidis, J.Ballof, Ch.E.Dullmann, V.N.Fedosseev, C.Granados, B.A.Marsh, Y.Martinez Palenzuela, J.P.Ramos, S.Rothe, T.Stora, K.Wendt Developments towards the delivery of selenium ion beams at ISOLDE
doi: 10.1140/epja/i2019-12873-4
2019SE04 Phys.Rev. C 99, 044306 (2019) S.Sels, T.Day Goodacre, B.A.Marsh, A.Pastore, W.Ryssens, Y.Tsunoda, N.Althubiti, B.Andel, A.N.Andreyev, D.Atanasov, A.E.Barzakh, M.Bender, J.Billowes, K.Blaum, T.E.Cocolios, J.G.Cubiss, J.Dobaczewski, G.J.Farooq-Smith, D.V.Fedorov, V.N.Fedosseev, K.T.Flanagan, L.P.Gaffney, L.Ghys, P.-H.Heenen, M.Huyse, S.Kreim, D.Lunney, K.M.Lynch, V.Manea, Y.Martinez Palenzuela, T.M.Medonca, P.L.Molkanov, T.Otsuka, J.P.Ramos, R.E.Rossel, S.Rothe, L.Schweikhard, M.D.Seliverstov, P.Spagnoletti, C.Van Beveren, P.Van Duppen, M.Veinhard, E.Verstraelen, A.Welker, K.Wendt, F.Wienholtz, R.N.Wolf, A.Zadvornaya Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations NUCLEAR MOMENTS 177,178,179,180,181,182,183,184,185,185mHg; measured hyperfine structure (hfs) spectra, hyperfine coupling constants, isotope shifts, and rms charge radii using the in-source resonance-ionization spectroscopy method combined with decay spectroscopy, and Multi-Reflection Time-of-Flight Mass Spectrometer (MR-TOF MS) at CERN-ISOLDE facility; deduced magnetic dipole moments, and spectroscopic quadrupole moments, configurations. Comparison with theoretical calculations using density functional theory (DFT) with Skyrme parametrizations, and Monte Carlo shell model (MCSM). Ions of Hg activities produced in Pb(p, X), E=1.4 GeV, using molten lead target. NUCLEAR REACTIONS Pb, U(p, X)177Hg/178Hg/179Hg/180Hg/181Hg/182Hg/183Hg/184Hg/185Hg/185mHg, E=1.4 GeV from PS-Booster synchrotron; measured production yields for different target-ion source configurations: VADLIS or RILIS at CERN-ISOLDE facility.
doi: 10.1103/PhysRevC.99.044306
2016FE08 Europhys.Lett. 115, 62002 (2016) A.S.Fenta, S.Pallada, J.G.Correia, M.Stachura, K.Johnston, A.Gottberg, A.Mokhles Gerami, J.Roder, H.Grawe, B.A.Brown, U.Koster, T.M.Mendonca, J.P.Ramos, B.A.Marsh, T.Day Goodacre, V.S.Amaral, L.M.C.Pereira, M.J.G.Borge, H.Haas The 68mCu/68Cu isotope as a new probe for hyperfine studies: The nuclear moments NUCLEAR MOMENTS 68Cu; measured perturbation functions; deduced electric quadrupole and magnetic dipole moments. Comparison with shell model calculations.
doi: 10.1209/0295-5075/115/62002
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