Neutron activation analysis is a method for the qualitative and quantitative determination of elements based on the measurement of characteristic radiation from radionuclides formed by irradiating ...

EXPERIMENTS on the Fermi effect with some rarer elements have given the results summarised below. The neutrons were obtained from sources of radon, in quantities up to 100 millicuries, sealed in ...

He called it a neutron, and imagined it as a paired proton and electron. There was no evidence for any of these ideas. Chadwick kept the problem in the back of his mind while working on other things.

The NGATLAS contains neutron capture cross sections in the range 10-5eV - 20MeV as evaluated and compiled in recent activation libraries. Numerical values of (n,g) cross sections are available for a ...

"And in this event, we see the fingerprints of formation of heavy elements that completes the story of how the periodic table formed." Observing these two neutron stars slamming into one another ...

like a supernovae or neutron star merger. Until now, our understanding of how these elements form has relied on theoretical predictions, but this experiment provides the first real-world data to ...