it was natural to examine whether any other stable isotopes of hydrogen, and particularly 3 H (triterium, symbol T), are present in ordinary hydrogen. In this article an account will be given of ...

This isotope is found at a ratio of about one per 2,500 helium-4 ions, the latter being the common version of helium. The sun just released a burst of a rare form of helium known as helium-3 (3 He).

A Rare Helium Surge Unlike Anything Seen Before The NASA/ESA Solar Orbiter captured the historic surge of ³He, a rare isotope of helium typically found at a ratio of just 1 per 2,500 compared to ...

“We showed that the core-mantle diffusion quantitatively transports tungsten and helium isotopes to almost exactly match the geochemistry of the hotspot islands,” Korenaga told the News. In rocks, ...

Study lead author Benjamin Birner of Scripps Institution of Oceanography at UC San Diego. (Courtesy: Erik Jepsen/UC San Diego) Helium-4, the most abundant isotope of helium, is produced by radioactive ...

Scientists can get some idea of where an atom of helium originated by looking at the number of neutrons in its nucleus—a figure that distinguishes different species, or isotopes, of the element.

The sun just released a burst of a rare form of helium known as helium-3 (3 He). What's peculiar is this lightweight, elusive isotope isn't usually seen in such high amounts. "This rare isotope ...