Atominstitut
Neutronen- und Quantenphysik
Arbeitsgruppe Abele
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30+ YEARS AUSTRIAN MEMBERSHIP OF THE ILL
On the occasion of Austria's 30-year membership of the European Neutron Source of the Institut Laue-Langevin (ILL), the Austrian Academy of Sciences (OeAW) invites to a celebratory session followed by a reception. Mehr
Endlich angekommen: Das Magnetsystem für PERC wurde fertiggestellt und an das MLZ geliefert
Seine Abmessungen sind beeindruckend groß, die Teilchen, die damit untersucht werden sollen, aber mikroskopisch klein. Das 12 m lange Magnetsystem für PERC zur hochpräzisen Untersuchung des Betazerfalls der Neutronen wurde im September an den Forschungsreaktor FRM II geliefert – nun wurde das Ereignis photographisch und filmisch präsentiert. Mehr
Nachruf Andrey Nikolaevich Ivanov
Wir trauern um Andrey Nikolaevich Ivanov. Andrey wurde am 3.Juni 1945 im damaligen Leningrad geboren. Er war seit 1993 Universitätsprofessor an der Fakultät für Physik, des nach Peter dem Großen genannten "Peter The Great St. Petersburg Polytechnic University". Seit 1995 war er mehrere Jahre Gastprofessor am Institut für Kernphysik und seit damals dem Institut eng verbunden. Mehr
Quantum gravitational states of ultracold neutrons as a tool for probing of beyond-Riemann gravity
We analyze a possibility to probe beyond-Riemann gravity (BRG) contributions, introduced by Kostelecký and Li (see Kostelecký and Li (2021)) on the basis of the Effective Field Theory (EFT) by Kostelecký (2004). We carry out such an analysis by calculating the BRG contributions to the transition frequencies of the quantum gravitational states of ultracold neutrons (UCNs). These states are being used for a test of interactions beyond the Standard Model (SM) and General Relativity (GR) in the qBOUNCE experiments. We improve by order of magnitude some constraints obtained by Kostelecký and Li (2021) Mehr
Decoherence-free entropic gravity: Model and experimental tests
Erik Verlinde's theory of entropic gravity [E. Verlinde, J. High Energy Phys. 04 (2011) 029], postulating that gravity is not a fundamental force but rather emerges thermodynamically, has garnered much attention as a possible resolution to the quantum gravity problem Mehr
Tests of Fundamental Quantum Mechanics and Dark Interactions with Low Energy Neutrons--Extended Version
Among the known particles, the neutron takes a special position, as it provides experimental access to all four fundamental forces and a wide range of hypothetical interactions. Mehr
Neutron Radiography and Tomography of the Drying Process of Screed Samples
The moisture content of screed samples is an essential parameter in the construction industry, since the screed must dry to a certain level of moisture content to be ready for covering. Mehr
Accurate Measurement of the Beta-Asymmetry in Neutron Decay Rules out Dark Decay Mode
The question of the nature of dark matter is one of the major challenges of elementary particle physics. Mehr
Limit on the Fierz Interference Term b from a Measurement of the Beta Asymmetry in Neutron Decay
In the standard model of particle physics, the weak interaction is described by vector and axial-vector couplings only. Mehr
MONOPOL - A traveling-wave magnetic neutron spin resonator for tailoring polarized neutron beams
We report on first experimental tests of a neutron magnetic spin resonator at a very cold neutron beam port of the high flux reactor at the ILL Grenoble. Mehr