Neutrinos weighed by the world's most precise scale

12-Jun-2018 - The Karlsruhe Tritium Neutrino Experiment KATRIN now starts to weigh the mass of neutrinos. Following the electrostatic spectrometer and the detector unit, the tritium source was installed as the last of the large components of KATRIN. The ambitious and highly motivated team of physicists, ...

A Quantum Low Pass for Photons

Physicists observe novel quantum effect that limits the number of emitted photons

19-Apr-2017 - The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called Poisson-distribution. There are, however, light sources with non-classical photon number distributions that can only be described by the ...

A perfect team for nanoelectronics

Polymer-coated silicon nanosheets as alternative to graphene

09-Mar-2017 - Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material ...

The most precise picture of the proton

HERA experiments H1 and ZEUS publish combined analysis

06-Jul-2015 - After 15 years of measurement and another eight years of scrutinizing and calculation, the particle physics collaborations H1 and ZEUS have published the most precise results about the innermost structure and behaviour of the proton. The two experiments which took data at DESY´s particle ...

analytica 2014 to focus on food and plastics analysis, genetic analysis and bioanalysis

27-Jan-2014 - A first-rate and exciting program of events awaits visitors at the 24th analytica in Munich. From April 1 – 4, the International Trade Fair for Laboratory Technology, Analysis and Biotechnology will once again be a center for key players in science and industry. More than 1,100 exhibitors will ...

IceCube detects first high-energy neutrinos from the cosmos

25-Nov-2013 - Within the eternal ice of Antarctica, scientists have observed the first solid evidence for high-energy neutrinos coming from cosmic accelerators beyond our own solar system. Between May 2010 and May 2012 the IceCube detector at the South Pole captured a total of 28 neutrinos with energies ...

Fast detector for a wide wavelength range

13-Aug-2013 - Free-electron lasers are extremely versatile research tools because their intense, super short light flashes permit a closer look at new materials and even biological molecules; thus, allowing effects to be observed that had not been known previously. For pulsed lasers in the far infrared range, ...

How small is the proton?

International team of researchers observes unexpectedly small proton radius in a precision laser experiment with exotic hydrogen atoms

12-Jul-2010 - The proton - one of the universal building-blocks of all matter - is even smaller than had previously been assumed. This is the result obtained at the Paul-Scherrer-Institut (PSI) in Villigen (Switzerland) by an international research team, including scientists from the Max Planck Institute of ...