For decades, scientists have puzzled over traces of primordial helium—a rare isotope known as ³He—escaping from volcanic rocks in places like Hawaii and Iceland. Unlike the more common ⁴He, which is ...

The discovery that inert helium can form bonds with iron may reshape our understanding of Earth’s history. Researchers from ...

On Earth, helium comes in two stable isotopes. By far the most common is helium-4, with a nucleus containing two protons and ...

These results suggest that similar reactions between helium and iron may have occurred within Earth’s core shortly after its formation, trapping much of the primordial helium-3 in the material that ...

Dr Anran Cheng (lead author) preparing equipment in the Ballentine Laboratory for the measurement of helium isotopes in geological samples. Credit: John Cairns. Dr Anran Cheng (lead author ...

Helium on Earth comes in two stable isotopes. By far the most common is helium-4, whose nucleus contains two protons and two neutrons. Helium-4 accounts for about 99.99986% of all helium on our ...

Berkeley Lab geochemist B. Mack Kennedy used this mass spectrometer (foreground) to determine helium isotope ratios in samples of surface fluids from the northern Basin and Range. Disclaimer ...

Primordial nucleosynthesis is believed by most cosmologists to have taken place in the interval from roughly 10 seconds to 20 minutes after the Big Bang, and is calculated to be responsible for the ...

A rare isotope from the early solar system may be locked in Earth's core, revealing insights into planetary formation ...

helium-4 and krypton-81) to help Member States better assess and manage their river and groundwater resources. The Section also aims to strengthen the self-reliance of Member States in using isotope ...

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