List of alpha emitting materials
Encyclopedia
At least the following radioactive materials are known to emit alpha particles.
- 209BiBismuth-209Bismuth-209 is the isotope of bismuth with the longest half-life. It has 83 protons and 126 neutrons, and an atomic mass of 208.9803987 u. All primordial bismuth is of this isotope...
, 211Bi, 212Bi, 213Bi - 210Po, 211Po, 212Po, 214Po, 215Po, 216Po, 218Po
- 215At, 217At, 218At
- 218Rn, 219Rn, 220Rn, 222Rn, 226Rn
- 221Fr
- 223Ra, 224Ra, 226Ra
- 225Ac, 227Ac
- 227Th, 228Th, 229Th, 230Th, 232Th
- 231Pa
- 233UUranium-233Uranium-233 is a fissile isotope of uranium, bred from Thorium as part of the thorium fuel cycle. It has been used in a few nuclear reactors and has been proposed for much wider use as a nuclear fuel. It has a half-life of 160,000 years....
, 234U, 235UUranium-235- References :* .* DOE Fundamentals handbook: Nuclear Physics and Reactor theory , .* A piece of U-235 the size of a grain of rice can produce energy equal to that contained in three tons of coal or fourteen barrels of oil. -External links:* * * one of the earliest articles on U-235 for the...
, 236UUranium-236- See also :* Depleted uranium* Uranium market* Nuclear reprocessing* United States Enrichment Corporation* Nuclear fuel cycle* Nuclear power-External links:* *...
, 238UUranium-238Uranium-238 is the most common isotope of uranium found in nature. It is not fissile, but is a fertile material: it can capture a slow neutron and after two beta decays become fissile plutonium-239... - 237Np
- 238PuPlutonium-238-External links:**...
, 239PuPlutonium-239Plutonium-239 is an isotope of plutonium. Plutonium-239 is the primary fissile isotope used for the production of nuclear weapons, although uranium-235 has also been used and is currently the secondary isotope. Plutonium-239 is also one of the three main isotopes demonstrated usable as fuel in...
, 240PuPlutonium-240Plutonium-240 is an isotope of the metal plutonium formed when plutonium-239 captures a neutron. About 62% to 73% of the time when Pu-239 captures a neutron it undergoes fission; the rest of the time it forms Pu-240. The longer a nuclear fuel element remains in a nuclear reactor the greater the...
, 244PuPlutonium-244Plutonium-244 is an isotope of plutonium that has a halflife of 80 million years. This is longer than any of the other isotopes of plutonium and longer than any actinide except for the three naturally abundant ones uranium-235 , uranium-238, and thorium-232... - 241Am
- 244Cm, 245Cm, 248Cm
- 249Cf, 252Cf