Isotopes of arsenic

Isotopes of arsenic

Jesse Russell Ronald Cohn

     

бумажная книга



ISBN: 978-5-5137-0977-0

High Quality Content by WIKIPEDIA articles! Arsenic (As) has 33 known isotopes and at least 10 isomers. Only one of these isotopes, 75As, is stable; as such, it is considered a monoisotopic element. The longest-lived radioisotope is 73As has a half-life of 80 days. Arsenic has been proposed as a "salting" material for nuclear weapons (cobalt is another, better-known salting material). A jacket of 75As, irradiated by the intense high-energy neutron flux from an exploding thermonuclear weapon, would transmute into the radioactive isotope 76As with a half-life of 1.0778 days and produce approximately 1.13 MeV of gamma radiation, significantly increasing the radioactivity of the weapon`s fallout for several hours. Such a weapon is not known to have ever been built, tested, or used.