The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and one electron in the region outside the nucleus. The electron and proton are attracted to each other.

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 ...

The strong force holds together quarks, the fundamental particles that make up the protons and neutrons of the atomic nucleus, and further holds together protons and neutrons to form atomic nuclei.

Previously this reaction enabled the measurement of protons. However, detecting neutrons in DVCS has been a challenging task. For the first time, the researchers were able to detect neutrons using ...

“BNCT requires epithermal neutrons, and they are best obtained by irradiating a lithium target with a low energy, high current proton beam. But at that time, there was no suitable proton ...