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  1. Article

    Open Access

    Mesoscopic Klein-Schwinger effect in graphene

    Strong electric field annihilation by particle–antiparticle pair creation, also known as the Schwinger effect, is a non-perturbative prediction of quantum electrodynamics. Its experimental demonstration remain...

    A. Schmitt, P. Vallet, D. Mele, M. Rosticher, T. Taniguchi, K. Watanabe… in Nature Physics (2023)

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  2. Article

    Open Access

    QCD and strongly coupled gauge theories: challenges and perspectives

    We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical pro...

    N. Brambilla, S. Eidelman, P. Foka, S. Gardner… in The European Physical Journal C (2014)

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  3. No Access

    Article

    Coupled aggregation and sedimentation processes: Three-dimensional off-lattice simulations

    Coupled aggregation and sedimentation processes were studied by means of three-dimensional computer simulations. For this purpose, a large prism with no periodic boundary conditions for the sedimentation direc...

    R. Leone, G. Odriozola, L. Mussio, A. Schmitt… in The European Physical Journal E (2002)

  4. No Access

    Article

    Determination of the helium-4 mass in a Penning trap

    We have measured the cyclotron frequencies of He+, H+ 2 and D+ 2 ions in a room temperature Penning trap. The resonances were detected destructively by a time-of-flight technique. The statistical uncertainty of t...

    S. Brunner, T. Engel, A. Schmitt, G. Werth in The European Physical Journal D - Atomic, … (2001)

  5. No Access

    Article

    The DLCA-RLCA transition arising in 2D-aggregation: simulations and mean field theory

    A sticking probability model based on the average cluster lifetime is employed for deducing a kernel capable to describe the kinetics of computer simulated irreversible aggregation processes in two dimensions....

    A. Moncho-Jordá, G. Odriozola, F. Martınez-López… in The European Physical Journal E (2001)

  6. No Access

    Article

    Lifetimes of metastable states in Sr II

    The lifetimes of the 4d 2D 3/2,5/2 levels of Sr+ have been determined both experimentally and theoretically. The experiment was performed at an ion storage ring utilising collinear laser excitation. The calculati...

    E. Biémont, J. Lidberg, S. Mannervik… in The European Physical Journal D - Atomic, … (2000)

  7. No Access

    Article

    Isotope shifts and hyperfine structure in the transitions of gadolinium

    High-resolution resonance ionization mass spectrometry has been used to measure isotope shifts and hyperfine structure in all (J = 2-6) and the ...

    K. Blaum, B.A. Bushaw, S. Diel, Ch. Geppert… in The European Physical Journal D - Atomic, … (2000)

  8. No Access

    Article

    Isotope shifts and hyperfine structure in the transitions in calcium II

    The isotope shift and hyperfine structure in the three - transitions in Ca II have been studied by fast ion beam collinear laser spectroscopy for all stable Ca isotopes. The ...

    W. Nörtershäuser, K. Blaum, K. Icker… in The European Physical Journal D - Atomic, … (1998)

  9. No Access

    Article

    Doubly-differential ionization cross sections of positron impact on argon

    We report the first measurement of doubly-differential ionization cross sections for positron impact on argon atoms. Energy- and angle-resolved measurements of ejected electrons in time correlation with the pr...

    A. Schmitt, U. Cerny, T. Falke, H. Möller, W. Raith, M. Weber in Hyperfine Interactions (1994)

  10. No Access

    Article

    The effect of collisions on wave-breaking in a cold plasma

    The effect of electron collisions on reducing the wave-breaking amplitude of resonantly-driven electrostatic fields in a cold plasma is investigated. By means of a simple theory collisions are shown to compete...

    A. Schmitt, R. S. B. Ong in Applied physics (1980)

  11. No Access

    Article

    Damage anneal of antimony/phosphorus double implants in silicon

    A method is presented for avoiding the dislocation generation in (100) silicon implanted with phosphorus doses up to 5×1015 ions/cm2 at 50 keV. The residual defects after the damage anneal are considerably reduce...

    A. Schmitt, G. Schorer in Applied physics (1980)

  12. No Access

    Article

    The reaction pp→pn π+ at 10 GeV/c and the OPE model

    The reaction pp→pnπ+ and isobar production in \(pp \to {\mathcal{N}}^{ * + + } (1236)\) n have been studied at 1...

    H. -C. Dehne, J. Díaz, K. Strömer, A. Schmitt… in Il Nuovo Cimento A (1965-1970) (1968)