The following is a listing of selected (greater than 100 million electron volt or “MeV”) radionuclides, ordered by element, that emit gamma ray photons during radioactive decay. Each entry gives the radionuclide symbol (i.e., I-131), followed by the photon energy (in units of MeV), followed by the photon yield (i.e., probability per decay).
Actinium
Americium
Antimony
Barium
Beryllium
Bismuth
Bromine
Carbon
Calcium
Cerium
Cesium
Chlorine
Chromium
Cobalt
Copper
Curium
Europium
Fluorine
Francium
Gallium
Gold
Holmium
Iodine
Indium
Iridium
Iron
Krypton
Lanthanum
Lead
Manganese
Mercury
Molybdenum
Neodymium
Neptunium
Nickel
Niobium
Nitrogen
Osmium
Potassium
Promethium
Protactinium
Radium
Radon
Rhodium
Rubidium
Ruthenium
Samarium
Scandium
Selenium
Silver
Sodium
Strontium
Technetium
Tellurium
Terbium
Thallium
Thorium
Tin
Tungsten
Uranium
Vanadium
Xenon
Ytterbium
Yttrium
Zinc
Zirconium