Nuclei

  • Countdown to the space mission “Solar Orbiter”: Measuring instruments from Kiel start their voyage

    The three sensors from Kiel are ready for space: EPT-HET1 and 2 on the left, and STEP on the right. Photo/Copyright: Jürgen Haacks, CAU

    Around five years ago, a team led by a physicist from Kiel University, Professor Robert Wimmer-Schweingruber, won the coveted tender for providing instruments to be placed on board the “Solar Orbiter” space probe. This joint mission of the European Space Agency (ESA) and the US space agency NASA is expected to launch in October 2018, and will go closer to the sun than has ever been done before. Now, exactly on schedule, the preparations in Kiel for this mission are entering their final phase. On Monday 21 November the flight instruments from Kiel will be handed over to the space probe installation team in England.

  • Partnership at a distance: Deep-frozen helium molecules

    “When two loners are forced to share a bed, they move well beyond its edges to get away from each other.” Peter Evers

    As atomic physicists in Frankfurt have now been able to confirm, over 75 percent of the time helium atoms are so far apart that their bond can be explained only by the quantum-mechanical tunnel effect. Helium atoms are loners. Only if they are cooled down to an extremely low temperature do they form a very weakly bound molecule. In so doing, they can keep a tremendous distance from each other thanks to the quantum-mechanical tunnel effect. As atomic physicists in Frankfurt have now been able to confirm, over 75 percent of the time they are so far apart that their bond can be explained only by the quantum-mechanical tunnel effect.

  • Ultra-High-Field Magnetic Resonance Moving Towards Clinical Use

    The new MRT image scanner MAGNETOM Terra with a seven Tesla magnet allows very high spatial resolution of up to 0.2 millimeters in all directions.

    One unique feature of the new “MAGNETOM Terra”¹ scanner is the Dual Mode functionality, which allows users to switch from the cutting-edge research mode into the clinical mode in less than 10 minutes. This mode includes clinically validated protocols, and paves the way for customers to continue with high end research projects. The core of the system – the new 7T magnet – is a complete new development. Siemens developed its first actively shielded 7T whole body magnet for MAGNETOM Terra, making this the first ultra-high-field scanner with all components designed, built and serviced by a single vendor.