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radioisotope    
n. 放射性同位元素

放射性同位元元素


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  • Radioactive isotope | Description, Uses, Examples | Britannica
    A radioactive isotope, also known as a radioisotope, radionuclide, or radioactive nuclide, is any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays
  • Radionuclide - Wikipedia
    A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that is unstable and known to undergo radioactive decay into a different nuclide, which may be another radionuclide (see decay chain) or be stable
  • Radioisotopes | IAEA
    Radioisotopes are the unstable form of an element that emit radiation to transform into a more stable form Radiation is easily traceable and can cause changes in the substance it falls upon These special attributes make radioisotopes useful in medicine, industry and other areas
  • What are Radioisotopes? | ANSTO
    When a nucleus absorbs a neutron, it often becomes a different isotope of the same element, which may be a radioisotope suitable for imaging, therapy or environmental tracing
  • Properties of Radioactive Isotopes: An Overview
    When uranium-238 decays, it produces several isotopes of: All of these radioactive atoms are part of our natural environment There are four types of radiation given off by radioactive atoms Radioactive atoms give off one or more of these types of radiation to reach a more stable state
  • Radioisotopes: What Are They and How Are They Made?
    An isotope that is radioactive is called a radioisotope or radionuclide Two examples may help clarify this The most stable isotope of uranium, U-238, has an atomic number of 92 (protons) and an atomic weight of 238 (92 protons plus 146 neutrons)
  • Radiation Emergency Preparedness and Response - Common Radioactive . . .
    Common Radioactive Isotopes The table below provides information about common radioactive isotopes Isotopes are forms of an element that have the same number of protons (positively charged particles) but different numbers of neutrons (neutral particles) in their nuclei
  • What Is a Radioactive Isotope? Definition and Uses
    A radioactive isotope is a version of a chemical element whose nucleus is unstable and releases energy to reach a more stable state Every element on the periodic table can have multiple isotopes, meaning atoms with the same number of protons but different numbers of neutrons
  • Radioactive isotopes: origin, applications and risks
    Radioactive isotopes are variants of the same chemical element that have a different number of neutrons in the atomic nucleus This means that they have the same number of protons in their nucleus, which determines their chemical identity, but they differ in the number of neutrons present
  • What are radioisotopes? - Foro Nuclear
    Radioisotope (also known as radisotope) These are radioactive isotopes, since they have an unstable atomic nucleus (due to the balance between neutrons and protons) and emit energy and particles when it changes to a more stable form





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