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 ...

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 ...

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.

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.

Neutral helium microscopy and atom optics constitute an innovative imaging paradigm that exploits low-energy, charge-neutral helium atoms to non-destructively investigate surface properties at the ...

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 ...

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

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.

Only about one helium-3 atom exists for every million helium-4 atoms, Horton said. The team measured about 10 million helium-3 atoms per gram of olivine crystals.

Carbon-12 through proton capture goes through various stages until a helium atom is emitted and carbon-12 is recovered. The NO cycle is similar but uses nitrogen-14 as a catalyst.