Half-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve or for the count rate to halve. Count-rate is the number of decays ...

Artemis Spyrou receives funding from the National Science Foundation and the Department of Energy/National Nuclear Security Administration. When you hear the term “radioactive” you likely think “bad ...

Gamma close gamma radiationA type of ionising radiation that is also part of the EM spectrum. It has no mass. is pure energy and will not change the structure of the nucleus in any way.