Radioactive isotope definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!

2020-04-08

Unsealed radioactive material (also called isotopes) refers to radioactive chemicals used in laboratory research for their tagging, labeling, tracing, radiation, or decay properties. In a laboratory setting, these isotopes are usually used in very small quantities, which limit the possible extent of any radiological accident. Radioactive isotopes have unstable ratios of protons to neutrons in their atomic nuclei. An isotope is an element with a varying numbers of neutrons. Radioactive This book provides a comprehensive and critical evaluation of the nuclear and atomic properties of radioactive isotopes.

Radioactive isotopes

Each radioactive isotope decays at a characteristic rate and therefore has a specific half-life (see Table 14-1). For example, the amount of radioactivity arising from a sample of 59 Fe is reduced to one-half its original value in 45.1 days, to one-fourth in 90.2 days, to one-eighth in 135.3 days, and so on. Radiopharmaceuticals are, generally, compounds of radioactive isotopes and various inorganic or organic substances, although in some cases radiopharmaceuticals can be simply radioactive nuclides. For example, in the study of the respiratory system, such a nuclide can be a radioactive isotope … 2015-08-20 Radioactive isotope definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation.

Detailed radiation data for about 2000 Radioactive isotopes are nuclides (isotope-specific atoms) that have unstable nuclei that decay, emitting alpha, beta, and sometimes gamma rays. Such isotopes 22 Aug 2019 Radioisotopes (radioactive isotopes or radionuclides or radioactive nulcides) are used in two major ways: either for their radiation alone ( But since they have different numbers of neutrons, these isotopes of the same element may have different radioactivity.

radioactive isotope or radioisotope, natural or artificially created isotope of a chemical element having an unstable nucleus that decays, emitting alpha, beta,

Generally, however, they are useful because either we can detect their radioactivity or we can use the energy they release. Radioactive isotopes are effective tracers because their radioactivity is easy to detect.

radioactive isotope an isotope of a chemical element that emits radiation during its decay to a stable form. Different isotopes of an element all have the same

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She was the av RH Flocks · Citerat av 4 — Pages 366-476. PDF · Diagnostic radioactive isotopes in urology. Rubin H. Flocks, Chester C. Winter. Pages 477-491.
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Radioactive isotopes have an unstable nucleus that decays or emits excess energy or radiation until the nucleus becomes stable. They can be naturally occurring or artificial isotopes of an element. A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is an atom that has excess nuclear energy, making it unstable. This excess energy can be used in one of three ways: emitted from the nucleus as gamma radiation; transferred to one of its electrons to release it as a conversion electron; or used to create and emit a new particle (alpha particle or beta particle) from the Radioactive isotope One of two or more atoms with the same number of protons but a different number of neutrons with a nuclear composition. In nuclear scanning, radioactive isotopes are used as a diagnostic agent.

For example, in the study of the respiratory system, such a nuclide can be a radioactive isotope of 133 Xе. Radioactive Isotopes: Home; Medical ; Industrial ; Reference List; Medical Isotopes. Industrial Isotopes. Powered by Create your own unique website with customizable radioactive isotope or radioisotope, natural or artificially created isotope isotope, in chemistry and physics, one of two or more atoms having the same atomic number but differing in atomic weight and mass number.
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Some isotopes are unstable and emit radiation in the form of particles and energy to form more stable elements. Some forms of radiation are dangerous. These are called radioactive isotopes or radioisotopes (figure \(\PageIndex{b}\)). During radioactive decay, one type of atom can change into another type of atom in this way (figure \(\PageIndex Alpha particles, beta particles and gamma rays.