Neutron Scattering Unveils New Insights into Superfluid Helium

Recent advancements in neutron scattering have enabled the observation of superfluid helium films. Traditionally, X-rays were used to study thin layers of helium, but this method had limitations, such as high energy interference and difficulty in distinguishing between different types of helium. Recent experiments using neutron scattering—a different and more effective technique—have provided new insights. This method allowed researchers to observe changes in the behaviour of helium layers as temperatures varied, including an unexpected return of layered structures at colder temperatures. This breakthrough offers exciting possibilities for future research into the unique properties of helium.

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