ionizing radiation with a discrete energy spectrum, emitted in a nuclear transition from a high-energy electron shell to a lower oneX-radiation with a discontinuous energy spectrum emitted in the transition of atoms from an excited state of the electron shell to a lower state
Monochromatic radiation that is produced when an electron is ejected from an atom and another takes its place by jumping from another shell; the energy of the photon is the difference between that of the two shell positions. ... Synonym: characteristic emission. ... (05 Mar 2000) ... 
Type: Term Definitions: 1. monochromatic radiation that is produced when an electron is ejected from an atom and another takes its place by jumping from another shell; the energy of the emitted photon is the difference between that of the two shell positions. Synonyms: characteristic emission See: photoelectric effect &nbs...