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  • decays
  • Radiocarbon dating definition, the determination of the age of objects of organic The 14C decays to the nitrogen isotope 14N with a half-life of 5730 years. (lifestrike.com)
  • isotopic
  • Our state of the art laboratory facilities allow measurement of a wide range of trace elements and determination of isotopic ratios, in materials such as minerals, rocks, ice, foraminifera and biological samples. (victoria.ac.nz)
  • The Nu Plasma is used for measuring the isotopic ratios of specific elements following purification of the samples in the ultra-clean laboratory. (victoria.ac.nz)
  • Depending on the kind of isotope being analyzed, isotopic ratios are measured in single mineral crystals or larger pieces of rock. (cliffsnotes.com)
  • These sources have different ratios of four Xe isotopes when measured in gas samples, so that there is a typical isotopic range assumed for a weapons test. (sciencemag.org)
  • More generally, differential transport caused by variations in atmospheric pressure can strongly influence Xe isotopic ratios. (sciencemag.org)
  • radiation
  • Their intermediate half-life (long enough to be significant storage materials yet short enough to release their radiation energy fast enough) combined with their high energy release cause them to account for about 98% of the radioactive hazard after 10 years of storage. (amazonaws.com)
  • An isotope that changes to a more stable state by emitting radiation. (thefreedictionary.com)
  • Radioactive tracers have many advantages over other tracers, which include the identity of chemical and physical properties of all isotopes of a given element, the emission of radiation is a specific property of the tracer which is not affected by interference from other materials in the system, radioisotopes are measurable with high sensitivity and therefore detectable in very low concentration and the measurement in situ is possible. (thefreedictionary.com)
  • Argon
  • However, datings discovered in the s that they could irradiate a dating sample with neutrons and thereby convert the potassium to argon, an isotope not normally found in nature and easier to measure. (technobuddy.online)
  • Radioisotope
  • In the study, high specific uptake was obtained in human colon cancer cells transplanted in mice, resulting in very high tumour-to-blood and tumour-to-kidney ratios of radioisotope uptake. (thefreedictionary.com)
  • bismuth
  • A similar attempt to separate the radioactive products of throium led to the preparation and isolation of BiH 3 and the realizaiton that throium C and radium E were isotopes of bismuth. (encyclopedia.com)
  • compounds
  • He contributed significantly to the development of radioactive tracer techniques, synthesized and characterized new metal hydrides, and experimentally verified the existence of free radicals in the thermal decomposition of organic compounds. (encyclopedia.com)
  • thus
  • it was thus undetected for a long time, and only the use of ratioactive isotopes permitted the detection of the quantities formed. (encyclopedia.com)