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Size of helium nucleus measured more precisely than ever before

In experiments at the Paul Scherrer Institute PSI, an international research collaboration has measured the radius of the atomic nucleus of helium five times more precisely than ever before. With the aid of the new value, ...

Quantum wave in helium dimer filmed for the first time

Anyone entering the world of quantum physics must prepare themself for quite a few things unknown in the everyday world: Noble gases form compounds, atoms behave like particles and waves at the same time and events that in ...

Scientists solve big limitation of stratospheric balloon payloads

Nearly all photons emitted after the Big Bang are now visible only at far-infrared wavelengths. This includes light from the cold universe of gas and dust from which stars and planets form, as well as faint signals from distant ...

Stretching makes the superconductor

When people imagine "new materials," they typically think of chemistry. But UConn physicist Ilya Sochnikov has another suggestion: mechanics.

Helium, a little atom for big physics

Helium atom precision measurements and calculations have a history of nearly a century. In the 1960s, theorists discovered that the fine-structure split (23P0-23P2) of the 23P energy level of helium is the best atomic system ...

Mineral undergoes self-healing of irradiation damage

Several minerals suffer radioactive self-irradiation and experience long-term changes to their properties. The mineral monazite behaves like Camembert cheese in which holes are drilled: existing radiation damage heals itself. ...

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