Physikalisch-Technische Bundesanstalt

Aug 23, 2024 | pubs.aip.org | Institut für Kernphysik |Technische Universität Darmstadt |East Lansing |Physikalisch-Technische Bundesanstalt

Topics Electrical equipment, Doppler effect, High voltage technology, Collinear laser spectroscopy, Hyperfine structure, Isotopic shift, Ion source Long-term stable high-voltage sources are key for a variety of modern high-precision experiments: in particle physics, e.g., for the determination of the neutrino mass by measuring the beta-decay electron-end point energy1,2 or for the operation of large-scale calorimeters;3 in nuclear physics, e.g., for the determination of masses4–6 or charge...

Jun 25, 2024 | onlinelibrary.wiley.com | Physikalisch-Technische Bundesanstalt

more ... more ... JOURNAL OFSYNCHROTRONRADIATION ISSN: 1600-5775 Volume 31| Part 4| July 2024| Characterization of silicon pore optics for the NewAthena X-ray observatory in the PTB laboratory at BESSY II M. Krumrey,a* D. Skroblin,a L. Cibik,a M. Collon,b G. Vacanti,b N. Barrière,b E. Hauserb and M.

Feb 22, 2024 | link.aps.org | Fabian Wolf |Physikalisch-Technische Bundesanstalt

Optical atomic clocks based on trapped ions suffer from systematic frequency shifts of the clock transition due to interaction with blackbody radiation from the environment. These shifts can be compensated if the blackbody radiation spectrum and the differential dynamic polarizability is known to a sufficient precision. Here, we present a new measurement scheme, based on quantum logic that allows a direct transfer of precision for polarizability measurements from one species to the other.

Jan 23, 2024 | pubs.aip.org | Physikalisch-Technische Bundesanstalt

Topics Acoustical properties, Architectural acoustics, Microphones, Acoustic measurements and instrumentation, Acoustic noise measurement, Acoustic ecology, Acoustic signal processing, Acoustic transducers, Precision engineering, Nanolithography The sound power level (SWL) L W is the key quantity to describe the noise emissions of products, machines, and equipment.

Sep 12, 2023 | link.aps.org | Craig Barton |Physikalisch-Technische Bundesanstalt |Alexander Fernández Scarioni |Baha Sakar

Magnetic skyrmions are topological spin structures that arise in chiral magnetic systems which exhibit broken inversion symmetry and high spin-orbit coupling resulting in a sizable Dzyaloshinskii-Moriya interaction. Understanding the local spin texture of skyrmions is a vital metrological step in the development of skyrmionic technologies required for novel logic or storage devices in addition to providing fundamental insight into the nanoscale chiral interactions inherent to these systems.