Conventional radioactivity sensing techniques involve waiting for particles produced during radioactive decay to hit a detector. The method can sense these particles from tens of metres away ...

Scientists realised they could use this natural process as a ‘clock’ to determine the ages of rocks and fossils. This method hinges on the concept of half-life, the time required for half of a ...

Some isotopes are stable, while others are radioactive and decay over time, emitting radiation. Carbon-14 is a radioactive isotope of carbon, meaning that it undergoes beta decay, releasing electrons.

Radioactive sources include a range of different radionuclides and amounts of radioactive material. Sealed source: A radioactive source in which the radioactive material is (a) permanently sealed in a ...

Beta particles from beta decay can be a health hazard. Learn more. Learn more about beta decay and other terms at the JLab glossary. DOE Contributions to Radioactive Decay Research. DOE has a long ...

Now Wang and co have used the technique to watch these particles recoil as nuclei within them decay. The team start with tiny silica spheres with a diameter of about 3 micrometers, less than than the ...

Radioactive decay can be easily detected with a photomultiplier tube, but these tubes are sensitive to magnetic fields and cosmic rays that would easily fly through just about any shielding ...

Radioactive decay is the set of various processes by which unstable atomic nuclei (nuclides) emit subatomic particles (radiation). Decay is said to occur in the parent nucleus and produces a ...