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Welcome to the Max-Planck-Institut für Kernphysik (MPIK, Max Planck Institute for Nuclear Physics) in Heidelberg, one of 83 institutes and research establishments of the  Max-Planck-Gesellschaft (Max Planck Society). The MPIK does experimental and theoretical basic research in the fields of Astroparticle Physics (crossroads of particle physics and astrophysics) and Quantum Dynamics (many-body dynamics of atoms and molecules).

  

Latest news


The proton precisely weighted


What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value. (Physical Review Letters, 18 July 2017)

 more...

Quantum mechanical tunnelling takes time


What is the role of time in quantum mechanical tunnelling? Physicists of the MPI for Nuclear Physics considered this question theoretically as well as experimentally for the ionisation of atoms in strong laser fields as an exemplary case. Here, the “Wigner method” is used to calculate the electron’s “tunnelling time“ and to determine the initial conditions for its subsequent motion in the laser field. In order to test this model, the noble gases Argon and Krypton were ionised by ultrashort laser pulses simultaneously under identical conditions. In contrast to the established “simple-man model“, where tunnelling takes no time, the predictions of the Wigner method have been confirmed.

 Article at Physical Review Letters (14 July 2017)

Images of research at MPIK


  • Artist‘s view of the reaction between protonated water and electrons in the CSR
  • Copper strips distribute the cold to the experimental vacuum chambers of the CSR
  • The atomic mass of a bound electron is balanced by QED contributions in increasing order, playing the role of a precision mass set
  • Electrodes of a Penning trap
  • A liquid-nitrogen-cooled GaAs photocathode producing cold electron beams
  • The emergence of a spectral line (Fano profile)
  • „Chirped mirror“ arrangement for ultrashort Laser pulses
  • Crystal of laser-cooled ions in a cryogenic Paul trap
  • A reaction microscope
  • Wave function for two electrons in doubly excited helium
  • Principle of the generation of an X-ray frequency comb by means of a laser-controlled gas
  • Schematic representation of interactions in extremely intense laser pulses: pair creation and spin-dependent trajectories
  • Illustration of laser control in atoms and nuclei
  • A laser-induced splitting gradient is used to store the complete frequency spectrum of a broadband pulse in a resonant medium
  • Tunnel ionization of a highly charged ion at relativistic laser intensities
  • Cameras for CTA: CHEC for small telescopes in front of FlashCam for medium-sized telescopes
  • View of the full H.E.S.S. array with the four 12 m telescopes and the new 28 m H.E.S.S. II telescope
  • Image of a particle cascade viewed simultaneously by all five H.E.S.S. telescopes
  • A proton-lead collision observed by the LHCb detector
  • Predictions of the turbulent magnetic field excited ahead of a shock front
  • Integration of the acrylic vessels in the Double Chooz detector
  • Construction principle of the Nucifer detector
  • Elementary particles of the Standard Model and their hypothetical supersymmetric and seesaw partners
  • The GERDA detector strings with Nylon shielding and optical fibre
  • The upper photomultiplier array for the XENON1T experiment searching for Dark Matter
  • Annihilation tracks of antiprotons in an emulsion detector
  • Gold-plated mirror for a novel detector module in mid-infrared at the Cryogenic Trap for Fast ion beams (CTF).
  • Illustration of the rotational symmetry of an octahedron, used to construct models for fermion mixing
Max-Planck-Gesellschaft

18.07.17

Das Proton präzise gewogen

Wie schwer ist ein Proton? Auf dem Weg zur möglichst...


15.07.17

Quantenmechanisches Tunneln braucht Zeit

Experiment bestätigt theoretische Vorhersage zur Zeitdauer...


27.06.17

Otto-Hahn-Medaille für Jonas Gunst

Erneut junger Wissenschaftler des MPI für Kernphysik...


29.05.17

Bundesverdienstkreuz für Joachim Ullrich

Joachim Ullrich, Präsident der PTB und Auswärtiges...