For decades, scientists believed that lead-208 (²⁰⁸Pb), the heaviest known "doubly magic" nucleus, was perfectly spherical.

One leading explanation was that there were electrons and additional protons in the nucleus as well -- the ... He called it a neutron, and imagined it as a paired proton and electron.

T he atomic nucleus is made up of protons and neutrons, particles that exist through the interaction of quarks bonded by gluons. It would seem, therefore, that it should not be difficult to ...

Lead-208, recognized as the heaviest double magic isotope ever observed, has long served as a benchmark of stability and ...

Scientists have now mapped the forces acting inside a proton, showing in unprecedented detail how quarks—the tiny particles ...

They have a radius of around 1 × 10 10 metres. This symbol shows that chlorine has 35 particles in the nucleus (protons and neutrons), 17 of which are protons. It also tells us that chlorine has ...

Atomic nuclei exhibit multiple energy scales simultaneously—ranging from hundreds down to fractions of a megaelectronvolt. A ...

In ordinary water, each hydrogen atom has just a single proton in its nucleus. In heavy water, each hydrogen atom is indeed heavier, with a neutron as well as a proton in its nucleus. This isotope ...

Scientists have now mapped the forces acting inside a proton, showing in unprecedented detail how quarks -- the tiny particles within -- respond when hit by high-energy photons. The international team ...

A compact method of detecting neutrinos provides new tests of physics theories and could lead to new reactor-monitoring methods.

Chinese scientists sustain plasma at 100 million degrees C for 1,066 seconds in EAST, advancing nuclear fusion research.