Microwave radiation is not typically emitted during the radioactive decay of isotopes. Radioactive decay involves the spontaneous transformation of unstable atomic nuclei into more stable configurations, usually through processes like alpha decay, beta decay, or gamma decay. These processes involve the emission of alpha particles (helium nuclei), beta particles (electrons or positrons), or gamma rays (high-energy photons). Gamma rays are a form of electromagnetic radiation, but they are at much higher energies than microwave radiation (GHz-range photons).
The energy levels involved in the transitions during radioactive decay are typically much higher than those associated with microwave radiation. The transitions of valence shell electrons in atoms, which do produce electromagnetic radiation, usually fall within the ultraviolet, visible, or infrared regions of the electromagnetic spectrum, not in the microwave range.
If you're looking for information on the types of radiation emitted during radioactive decay and the energies involved, you can refer to various physics and nuclear physics textbooks or academic sources on radioactivity and nuclear decay. These sources will provide detailed information on the types of particles and electromagnetic radiation emitted during different decay processes for specific isotopes.