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NSR database version of April 27, 2024.

Search: Author = M.Athanasakis-Kaklamanakis

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2023AU02      Phys.Rev. C 107, 064604 (2023)

M.Au, M.Athanasakis-Kaklamanakis, L.Nies, R.Heinke, K.Chrysalidis, U.Koster, P.Kunz, B.Marsh, M.Mougeot, L.Schweikhard, S.Stegemann, Y.Vila Gracia, Ch.E.Dullmann, S.Rothe

Production of neptunium and plutonium nuclides from uranium carbide using 1.4-GeV protons

NUCLEAR REACTIONS U(p, X)²³⁵Np/²³⁶Np/²³⁷Np/²³⁸Np/²³⁹Np/²⁴⁰Np/²⁴¹Np/²³⁵Pu/²³⁶Pu/²³⁷Pu/²³⁸Pu/²³⁹Pu/²⁴⁰Pu/²⁴¹Pu, E=1.4 GeV; measured reaction products using resonance ionization laser ion source (RILIS), general purpose separator (GPS), and ISOLTRAP multireflection time-of-flight mass spectrometer (MR-ToF MS) at CERN-ISOLDE facility. ^{234,237,236,239,240}U, ^{231,232,233,234,235,236,237,238,239,240,241}Np, ^{235,236,237,238,239,240,241}Pu; calculated production yields by inelastic reactions and through decays of precursors: ^234,236,237Pa, ^231,233,235Pu, ^237,239,240U, ²³⁵Am, ^{235,236,238,239,240,241}Np using GEANT4 QGSP_INCLXX+ABLA code. Comparison with predictions of GEANT4 and FLUKA simulations; discussed limit of accelerator-based isotope production at high-energy proton accelerator facilities for nuclides in the actinide region.

ATOMIC PHYSICS ^236,237,239Np, ^236,239,240Pu; measured isotope shifts for the 395.6-nm ground-state transition in Np isotopes, and for the 413.4-nm ground-state transition in Pu isotopes by two-step ionization schemes using intra-cavity doubled Ti:Sa lasers to resonantly ionize Np and Pu isotopes.

doi: 10.1103/PhysRevC.107.064604
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2023KR02      Nature(London) 617, 706 (2023)

S.Kraemer, J.Moens, M.Athanasakis-Kaklamanakis, S.Bara, K.Beeks, P.Chhetri, K.Chrysalidis, A.Claessens, T.E.Cocolios, J.G.M.Correia, H.De Witte, R.Ferrer, S.Geldhof, R.Heinke, N.Hosseini, M.Huyse, U.Koster, Y.Kudryavtsev, M.Laatiaoui, R.Lica, G.Magchiels, V.Manea, C.Merckling, L.M.C.Pereira, S.Raeder, T.Schumm, S.Sels, P.G.Thirolf, S.M.Tunhuma, P.Van Den Bergh, P.Van Duppen, A.Vantomme, M.Verlinde, R.Villarreal, U.Wahl

Observation of the radiative decay of the ²²⁹Th nuclear clock isomer

RADIOACTIVITY ²²⁹Ac(β^-), ²²⁹Th(IT) [from U(p, X), E=1.4 GeV]; measured decay products, Eγ, Iγ; deduced isomeric transition energies and T_1/2. Comparison with available data. The ISOLDE facility at CERN.

doi: 10.1038/s41586-023-05894-z
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2023NI07      Phys.Rev.Lett. 131, 022502 (2023)

L.Nies, D.Atanasov, M.Athanasakis-Kaklamanakis, M.Au, K.Blaum, J.Dobaczewski, B.S.Hu, J.D.Holt, J.Karthein, I.Kulikov, Y.A.Litvinov, D.Lunney, V.Manea, T.Miyagi, M.Mougeot, L.Schweikhard, A.Schwenk, K.Sieja, F.Wienholtz

Isomeric Excitation Energy for ⁹⁹In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic ¹⁰⁰Sn

ATOMIC MASSES ^99,100,101In; measured TOF; deduced mass excess, excitation energies. The ISOLTRAP mass spectrometer at ISOLDE/CERN.

RADIOACTIVITY ⁹⁹In(IT); measured decay products; deduced excitation energy with small uncertainty, intriguing constancy of the isomer excitation energies in neutron-deficient indium that persists down to the N=50 shell closure, even when all neutrons are removed from the valence shell. Comparison with large-scale shell model, ab initio, and density functional theory calculations.

doi: 10.1103/PhysRevLett.131.022502
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Data from this article have been entered in the XUNDL database. For more information, click here.