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Quantum logic spectroscopy unlocks potential of highly charged ions

31-Jan-2020

Scientists from the Physikalisch-Technische Bundesanstalt (PTB) and the Max Planck Institute for Nuclear Physics (MPIK) have carried out pioneering optical measurements of highly charged ions with unprecedented precision. To do this, they isolated a single Ar¹³⁺ ion from an extremely hot plasma ...

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Distorted Atoms

11-Nov-2019

In two experiments performed at the free-electron laser FLASH in Hamburg a cooperation led by physicists from the Heidelberg Max Planck Institute for Nuclear physics (MPIK) demonstrated strongly-driven nonlinear interaction of ultrashort extreme-ultraviolet (XUV) laser pulses with atoms and ions. ...

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Laser flashes for polarized electron and positron beams

14-Jun-2019

Simulations show new methods for efficient polarization: Physicists from the Max Planck Institute for Nuclear Physics in Heidelberg proposed novel methods for generation of relativistic spin polarized electron and positron beams. Using extensive simulations, they found three different scenarios ...

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The proton precisely weighted

20-Jul-2017

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 ...

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Watching the buildup of quantum superpositions

14-Nov-2016

It is definitely the most famous experiment in quantum physics: in the double slit experiment, a particle is fired onto a plate with two parallel slits, so there are two different paths on which the particle can reach the detector on the other side. Due to its quantum properties, the particle ...

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Molecular selfie reveals how a chemical bond breaks

Proton is seen escaping the molecule

24-Oct-2016

Imagine what it would be like to watch how the individual atoms of molecules rearrange during a chemical reaction to form a new substance, or to see the compounds of DNA move, rearrange and replicate. Such capability would give unprecedented insight to understand and potentially control the ...

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Frozen highly-charged ions for highest precision spectroscopy

16-Mar-2015

A team of researchers from the Max Planck Institute for Nuclear Physics in Heidelberg, the Physikalisch-Technische Bundesanstalt in Braunschweig and the University of Aarhus in Denmark demonstrated for the first time Coulomb crystallization of highly-charged ions (HCIs). Inside a cryogenic ...

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Billard game in an atom

Physicists from the Max Planck Institute of Quantum Optics trace the double ionization of argon atoms on attosecond time scales

11-May-2012

When an intense laser pulse interacts with an atom it generates agitation on the micro scale. A rather likely outcome of this interaction is single ionization, where one electron is ejected from the atom. From time to time, however, two electrons can be removed from the atom, resulting in the ...

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First result from a new generation of reactor neutrino experiments

15-Nov-2011

Physicists of the Double Chooz experiment detected a short-range disappearance of electron antineutrinos. They presented this result on Wednesday 9 November 2011 at the LowNu conference in Seoul, Korea. It helps determine the so-far unknown third neutrino mixing angle which is a fundamental ...

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Neutrino detector starts measurement

New facility in France to measure fundamental properties of neutrinos

31-Jan-2011

The Double Chooz collaboration recently completed its neutrino detector which will see anti-neutrinos coming from the Chooz nuclear power plant in the French Ardennes. The experiment is now ready to start collecting data in order to measure fundamental neutrino properties with important ...

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