A radioisotope emits rays as it decays. For a given thickness of material, which of the following would provide the most effective shielding when handling this isotope?
A uranium-237 nucleus decays, emitting a gamma ray with a wavelength of 5.96 pm. What is the energy of this gamma ray in keV?
Which of the following is a reason for the number of nucleons (protons and neutrons) not changing on emission of gamma radiation from a radioactive isotope?