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  2. Radiometric dating - Wikipedia

    en.wikipedia.org/wiki/Radiometric_dating

    Radiometric dating, radioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.

  3. Americium-241 - Wikipedia

    en.wikipedia.org/wiki/Americium-241

    Americium-241 (241 Am, Am-241) is an isotope of americium.Like all isotopes of americium, it is radioactive, with a half-life of 432.2 years. 241 Am is the most common isotope of americium as well as the most prevalent isotope of americium in nuclear waste.

  4. Iodine-129 - Wikipedia

    en.wikipedia.org/wiki/Iodine-129

    129 I is one of the seven long-lived fission products that are produced in significant amounts. Its yield is 0.706% per fission of 235 U. [7] Larger proportions of other iodine isotopes such as 131 I are produced, but because these all have short half-lives, iodine in cooled spent nuclear fuel consists of about 5/6 129 I and 1/6 the only stable iodine isotope, 127 I.

  5. File:Thorium decay chain from lead-212 to lead-208.svg

    en.wikipedia.org/wiki/File:Thorium_decay_chain...

    His name should be a link to his Wikimedia Commons userpage.If a link is not possible, then the url should be placed in parentheses after the name. If the work has been substantially altered by other people (see the File history section below), then this particular attribution requirement is waived, which means you can attribute the work in any reasonable manner.

  6. List of equipment of the Vietnam People's Navy - Wikipedia

    en.wikipedia.org/wiki/List_of_equipment_of_the...

    Since the Vietnam War, most of Vietnamese vessels were supplied by the Soviet Union and presently by Russia, while hundreds more were integrated into the navy after it was left over from South Vietnam although many have been decommissioned due to lack of parts.

  7. Cobalt-60 - Wikipedia

    en.wikipedia.org/wiki/Cobalt-60

    The decay scheme of 60 Co and 60m Co.. The diagram shows a simplified decay scheme of 60 Co and 60m Co. The main β-decay transitions are shown. The probability for population of the middle energy level of 2.1 MeV by β-decay is 0.0022%, with a maximum energy of 665.26 keV.

  8. Radionuclide - Wikipedia

    en.wikipedia.org/wiki/Radionuclide

    A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that has excess numbers of either neutrons or protons, giving it excess nuclear energy, and making it unstable.

  9. Radioimmunoassay - Wikipedia

    en.wikipedia.org/wiki/Radioimmunoassay

    A radioimmunoassay (RIA) is an immunoassay that uses radiolabeled molecules in a stepwise formation of immune complexes.A RIA is a very sensitive in vitro assay technique used to measure concentrations of substances, usually measuring antigen concentrations (for example, hormone levels in blood) by use of antibodies.