By bombarding a thin film of americium with calcium ions, the research team was able to measure photons in connection with the new element's alpha decay
. Certain energies of the photons agreed with the expected energies for X-ray radiation, which is a 'fingerprint' of a given element.
Helium cannot be manufactured, it is produced through radioactive alpha decay
in rocks although I happen to know that it can be captured, in a sandwich bag perhaps, from radioactive tritium.
It starts with introductory concepts (such as the atom and modern physical concepts), then describes nuclear properties, radioactive decay kinetics, radiotracers, nuclear forces, nuclear structures, alpha decay
, beta decay, nuclear reactions, fission, nuclear reactions in nature such as in nuclear astrophysics, analytical applications of nuclear reactions, reactors and accelerators, the transuranium elements, nuclear reactor chemistry, interaction of radium with matter, radiation detectors and radiochemical techniques.