The helium atoms are then ionized by the absorption of a single ultraviolet photon, the energy of which is tuned such that it is only just enough to ionize the helium – 99.9% of the photon’s energy is ...

When Helium was discovered on Earth, its unique properties immediately lent itself to scientific uses. As a lighter-than-air gas, it could be used for buoyancy or even levitation.

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

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 ...

How to fake super-heavy hydrogen In a feat of modern-day alchemy, atom tinkerers have fooled hydrogen atoms into accepting a helium atom as one of their own. The camouflaged atom behaves ...

KidsPost Helium isn’t just for balloons. It’s a valuable technology resource. The element -- which is rare on Earth -- is used in rockets, smartphones and medical equipment.

Helium is the simplest element in the periodic table with more than one particle in its nucleus, yet state of the art theory and experiments on it don't add up.

The current results from muonic helium-3 fit well with those from previous experiments in which other methods were used. However, the PSI team's measurements are around 15 times more precise.

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 ...

Physicists have created the first-ever atomic vortex beam — a swirling tornado of atoms and molecules with mysterious properties that have yet to be understood.

There Aldo Antognini's team generates so-called muonic helium-3, in which the two electrons of the helium atom are replaced by an elementary particle called a muon. This allows the nuclear radius ...