Absolutely bonkers experiment measures antiproton orbiting helium ion It's a potentially useful technique—and it's surprising that it works. John Timmer – Mar 16, 2022 12:00 pm | 70 ...

Pionic helium In this experiment, a pion – shown here with one orange and one blue particle representing its quark and anti-quark – replaces one of the two electrons in the helium atom. This new ...

Uranium decay series. When U-238 decays into Th-234 (upper left), it liberates an alpha particle, which is a helium nucleus. The particle quickly picks up two electrons, creating a new atom of helium.

Helium’s lightness and extensive use mean the Earth’s supply of the element is slowly being depleted. Miao said if his team’s theory proves true — “I believe it will, and it has been partially proven” ...

Once the muons slow down enough, they can enter into a high-energy orbit in a helium atom, bumping out one of its electrons in the process. But the second electron is still around, messing up any ...

A new method uses helium droplets combined with ultrashort laser pulses to trigger chemical reactions in a controlled way.

Built around a bath of superfluid helium-4, the device would use field ionization to spot single helium ions ejected from the superfluid’s surface by colliding weakly interacting massive particles ...

The helium atom is smaller than any other element, and only hydrogen is lighter. That makes it a very good lifting gas in applications like balloons and blimps. But helium has far more critical ...

The atom is then smashed with another proton to make a helium-3 atom. When a second helium-3 atom collides with the first helium-3 atom, two protons wander off on their own, and the remnants of ...

The research, published this week in Science relies on finding the colour of laser light where a helium atom is invisible, and is an independent corroboration of previous methods used to test QED ...

Instead of water, they used a nanoscopic droplet of liquid helium cooled to -273°C as the solvent – and instead of a grain of salt, they used an atom of sodium.. The researchers embedded a ...