Radionuclide - Wikipedia
网页A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that has excess numbers of either neutrons or protons, giving it excess nuclear energy, and making it unstable.
Radionuclides | US EPA
网页2023年10月12日 · Below you will find links to basic information about twelve radionuclides encountered in medical, commercial, and military activities. These pages contain information about the properties of the element, how it moves through the environment, where you may find it (the radiation source) and potential health effects .
Radioactive isotope | Description, Uses, & Examples | Britannica
网页radioactive isotope, 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.
Radionuclides | U.S. Geological Survey - USGS.gov
网页A radionuclide is an atom (element) with an unstable nucleus (core). The nucleus of the atom has excess energy that is released by different types of radioactive decay. Radionuclides in our environment are produced by minerals in the Earth’s crust, by cosmic rays hitting atoms in the Earth’s atmosphere, and by human activities ...
What are radionuclides? Uses and dangers - Nuclear energy
网页2015年10月2日 · The use of radionuclide implies serious environmental risks (radioactive contamination) and health risks (radiotoxicity, radiation poisoning, etc.). Naturally occurring radionuclides, such as uranium or plutonium, exist in finite quantities on Earth, so they must be used in a sustainable way.
Radionuclides in nuclear medicine: what they are and benefits
网页2015年10月2日 · Radionuclides, or radioisotopes, are atoms that have an unusual number of neutrons in their nucleus, making them unstable and radioactive. This instability manifests itself through the emission of subatomic particles and/or energy in the form of radiation.
Radionuclide Basics: Radium | US EPA
网页2024年2月5日 · Radium (chemical symbol Ra) is a naturally occurring radioactive metal. Radium is a radionuclide formed by the decay of uranium and thorium in the environment. The most common. of radium are Ra-226 and Ra-228. Radium-226 is part of the uranium.
Open questions on the environmental chemistry of radionuclides …
网页2020年11月12日 · Anthropogenic radionuclides are created during nuclear explosions, irradiation in nuclear reactors, particle or X-ray bombardment of materials, and α, β, γ, and ε decay or...
Radionuclide activities - Nature Physics
网页2023年8月10日 · Radionuclides have a myriad of applications, ranging from nuclear energy to environmental studies. Carine Michotte illustrates the importance of radionuclide metrology for nuclear...
LiveChart of Nuclides – Advanced version | IAEA
网页LiveChart is an interactive chart that presents the nuclear structure and decay properties of all known nuclides through a user-friendly graphical interface. Most of the accessible data are taken from the Evaluated Nuclear Structure Data File (ENSDF), which is the most authoritative and up-to-date database in this area.
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