radioisotope

(noun)

a radioactive isotope of an element

Related Terms

Examples of radioisotope in the following topics:

  • Tracers

    • A radioactive tracer is a chemical compound in which one or more atoms have been replaced by a radioisotope.
    • A radioactive tracer is a chemical compound in which one or more atoms have been replaced by a radioisotope.
    • By virtue of its consequent radioactive decay, this compound can be used to explore the mechanism of chemical reactions by tracing the path that the radioisotope follows from reactants to products.
    • All the commonly used radioisotopes (Tritium (3H), 11C, 13N, 15O, 18F, 32P, 35S, 99mTc, and 123I; see ) have short half-lives.

  • Chemical Assays, Radioisotopic Methods, and Microelectrodes

    • Radioisotopes are specific types of isotopes that emit radioactivity.
    • In the field of microbiology, radioisotopes have been used

  • Radiation

    • The gamma radiation is emitted from a radioisotope (usually cobalt-60 or cesium-137).
    • Use of a radioisotope requires shielding to ensure the safety of the operators while in use and in storage as these radioisotopes continuously emits gamma rays (cannot be turned off).
    • An incident in Decatur, Georgia where water soluble cesium-137 leaked into the source storage pool requiring NRC intervention has led to near elimination of this radioisotope; it has been replaced by the more costly, non-water soluble cobalt-60.
    • Subatomic particles may be more or less penetrating, and may be generated by a radioisotope or a device, depending on the type of particle.

  • Half-Life and Rate of Decay; Carbon-14 Dating

    • Carbon-14 dating is a radiometric dating method that uses the radioisotope carbon-14 (14C) to estimate the age of object.
    • It uses the naturally occurring radioisotope carbon-14 (14C) to estimate the age of carbon-bearing materials up to about 58,000 to 62,000 years old.
    • There are also trace amounts of the unstable radioisotope carbon-14 (14C) on Earth.

  • Radioactive Decay Series: Introduction

    • Because of this exponential nature, one of the properties of an isotope is its half-life, the time by which half of an initial number of identical parent radioisotopes have decayed to their daughters.
    • Half-lives have been determined in laboratories for thousands of radioisotopes (radionuclides).
    • The intermediate stages often emit more radioactivity than the original radioisotope.

  • Nuclear Stability

    • Even the lightest element, hydrogen, has a well-known radioisotope: tritium.
    • For every chemical element, many radioisotopes that do not occur in nature (due to short half-lives or the lack of a natural production source) have been produced artificially.

  • Modes of Radioactive Decay

    • Such isotopes are radioactive, and are referred to as "radioisotopes."
    • There are many types of emmitted particles and radiation that radioisotopes produce when they decay.
    • Alpha decay occurs because the nucleus of a radioisotope has too many protons.

  • Fluorescent Antibodies

    • Fluorescent molecules are used as substitutes for radioisotope or enzyme labels.

  • Medical Imaging and Diagnostics

    • Brachytherapy is another form of radiation therapy, in which a therapeutic radioisotope is injected into the body to chemically localize to the tissue that requires destruction .

  • Therapeutic Uses of Radiation

    • Brachytherapy is another form of radiation therapy, in which a therapeutic radioisotope is injected into the body to chemically localize to the tissue that requires destruction .