The number of radioactive decays that take place per unit mass. In general this means that a low specific activity material releases a relatively small amount of radiation. Back to The Nuclear Fuel Cycle.
A measure of the radioactivity of a unit weight (generally one gram) of material.
The total radioactivity of a given nuclide per gram of an element. This is a measure of the concentration of radioactivity. Specific activity can be expressed as µCi/gram, Bq/L, etc.
Total activity of a given nuclide per gram of a compound, element, or radioactive nuclide.
The radioactivity of an isotope per unit weight of the element in a sample. The number of radioactive decays per unit mass of a sample. Additional Note: 10CFR part 71 includes the note that the radioactivity is uniformly distributed through the material.
The quantity of radioactivity per unit mass; for example, dpm/g or Bq
The activity of a radionuclide divided by the mass of the element whose radionuclide is considered. The activity of a material divided by its mass or volume.
Total activity of a given radionuclide per unit mass or volume.
The number of atoms of a radioactive substance that disintigrate per unt time per unit mass of a radioisotope.
the amount of radioactivity per unit mass of radioactive material. It is most frequently expressed in curies per millimole of material (Ci/mmol).
The portion of functionally active alpha1- proteinase inhibitor divided by the total amount (both antigenic and functional) of protein in a given sample.
The activity of the radionuclide per unit mass of that nuclei. See radioactive.
The number of Curies per gram of material. Specific activity is a function of half-life, and is therefore also unique to each radionuclide.
The activity of the radionuclide per unit mass of the material that contains the radionuclide. [For DU the specific activity is about 0.4 ï¿1/2Ci/g.)