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  1. No Access

    Article

    Subharmonic excitation of the eigenmodes of charged particles in a Penning trap

    When parametrically excited, a harmonic system reveals a nonlinear dynamical behaviour which is common to non-deterministic phenomena. The ion motion in a Penning trap -- which can be regarded as a system of h...

    G. Tommaseo, P. Paasche, C. Angelescu… in The European Physical Journal D - Atomic, … (2004)

  2. No Access

    Article

    Ion trap nuclear resonance on \(\mathsf{^{151}Eu^ + }\)

    Laser-microwave double resonance techniques applied to a cloud of a natural mixture of Eu + isotopes confined in a Penning trap has been used to induce and detect nuclear Zeeman transiti...

    S. Trapp, G. Tommaseo, G. Revalde… in The European Physical Journal D - Atomic, … (2003)

  3. No Access

    Article

    The \(\mathsf{g_{\scriptscriptstyle J}}\) -factor in the ground state of Ca \(^\mathsf{+}\)

    We have determined the \(g_{\scriptscriptstyle J}\) -factor of the Ca + ion in the electronic 4S1/2 ground state on a cloud of ions confined in a Penning t...

    G. Tommaseo, T. Pfeil, G. Revalde, G. Werth… in The European Physical Journal D - Atomic, … (2003)

  4. No Access

    Article

    Hyperfine structure and \(\user1{g} \) factor measurements on Ba+ and Eu+ isotopes

    Paul and Penning ion traps have been used to determine hyperfine structure coupling constants as well as nuclear \(\user1{g} \) ...

    S. Trapp, G. Marx, G. Tommaseo, A. Klaas, A. Drakoudis… in Hyperfine Interactions (2000)

  5. No Access

    Article

    Precise - and -factor measurements of Ba+ isotopes

    Laser-microwave double and triple resonance experiments were performed on clouds of Ba+ ions confined in a Penning ion trap to induce and detect electronic and nuclear spin flip transitions. Collisions with buffe...

    G. Marx, G. Tommaseo, G. Werth in The European Physical Journal D - Atomic, … (1998)

  6. No Access

    Article

    Axialisation, cooling and quenching of ions in a Penning trap

    Collisions of ions, stored in a Penning trap, with neutral background molecules usually lead to rapid ion loss from the trap unless the ions are excited by the sum of the frequencies of the reduced cyclotron a...

    C. Lichtenberg, G. Marx, G. Tommaseo… in The European Physical Journal D - Atomic, … (1998)