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PF1B Polarised cold neutron beam facility

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Latest news related to the instrument

28 juillet 2025 JEFF4: une nouvelle référence en matière de données nucléaires pour la recherche et ses applications.

La bibliothèque JEFF (Joint Evaluated Fission and Fusion) est une base de données qui rassemble les connaissances expérimentales et théoriques sur les données nucléaires, les mettant ainsi à la disposition de la communauté des utilisateurs de données nucléaires. La publication de sa version JEFF-4.0 est une avancée majeure pour cette communauté, un succès auquel l'ILL a largement contribué.

Reactor Operation Nuclear and Particle physics Scientific news D1B D4 D20 IN5 SHARPER PANTHER PF1B PN1

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18 novembre 2022 Searching for traces of dark matter with neutron spin clocks

An international research team has succeeded in significantly narrowing the scope for the existence of dark matter, with the use of a precision experiment developed at the University of Bern, and carried out at the Institut Laue-Langevin (ILL).

Nuclear and Particle physics Scientific news PF1B Switzerland

29 septembre 2020 New design breaks the polarisation record – again!

Magnetic system of new PF1B polarizer The ILL has now implemented the best neutron polariser in the world – it is more compact and cheaper than others because of its size and able to reach nearly 100% polarisation. It is set to be implemented at a number of facilit…

Nuclear and Particle physics Scientific news PF1B

25 juin 2019 Accurate measurement of the weak axial vector coupling constant

Photo of the PERKEO III spectrometer during tests at Heidelberg University. Credit: Hartmut Abele. The to date most accurate measurement of the weak axial vector coupling constant gA has just been published as Editors' suggestion in PRL [1]. This fundamental consta…

PF1B Austria Germany Nuclear and Particle physics Scientific news

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11 juin 2019 News from neutrons-antineutrons oscillations

An observation of oscillations of neutrons into antineutrons, occurring even with a vanishingly small probability, would violate the law of conservation of baryon number and would constitute a scientific discovery of fundamental importance for physics and cosmology. A strong hint that this law mig…

PF1B France Scientific news

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3 mai 2019 No dark side to neutron decay

Precise measurements at the ILL of beta asymmetry rule out neutron decay into exotic dark matter particles

PF1B Austria Germany Nuclear and Particle physics Scientific news