Definitions for radioactive material
ra·dioac·tive ma·te·ri·al

Princeton's WordNetRate this definition:0.0 / 0 votes

1. radioactive materialnoun

   material that is radioactive

WikipediaRate this definition:0.0 / 0 votes

1. radioactive material

   A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide 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 nucleus. During those processes, the radionuclide is said to undergo radioactive decay. These emissions are considered ionizing radiation because they are energetic enough to liberate an electron from another atom. The radioactive decay can produce a stable nuclide or will sometimes produce a new unstable radionuclide which may undergo further decay. Radioactive decay is a random process at the level of single atoms: it is impossible to predict when one particular atom will decay. However, for a collection of atoms of a single nuclide the decay rate, and thus the half-life (t1/2) for that collection, can be calculated from their measured decay constants. The range of the half-lives of radioactive atoms has no known limits and spans a time range of over 55 orders of magnitude. Radionuclides occur naturally or are artificially produced in nuclear reactors, cyclotrons, particle accelerators or radionuclide generators. There are about 730 radionuclides with half-lives longer than 60 minutes (see list of nuclides). Thirty-two of those are primordial radionuclides that were created before the earth was formed. At least another 60 radionuclides are detectable in nature, either as daughters of primordial radionuclides or as radionuclides produced through natural production on Earth by cosmic radiation. More than 2400 radionuclides have half-lives less than 60 minutes. Most of those are only produced artificially, and have very short half-lives. For comparison, there are about 251 stable nuclides. (In theory, only 146 of them are stable, and the other 105 are believed to decay via alpha decay, beta decay, double beta decay, electron capture, or double electron capture.) All chemical elements can exist as radionuclides. Even the lightest element, hydrogen, has a well-known radionuclide, tritium. Elements heavier than lead, and the elements technetium and promethium, exist only as radionuclides. (In theory, elements heavier than dysprosium exist only as radionuclides, but some such elements, like gold and platinum, are observationally stable and their half-lives have not been determined). Unplanned exposure to radionuclides generally has a harmful effect on living organisms including humans, although low levels of exposure occur naturally without harm. The degree of harm will depend on the nature and extent of the radiation produced, the amount and nature of exposure (close contact, inhalation or ingestion), and the biochemical properties of the element; with increased risk of cancer the most usual consequence. However, radionuclides with suitable properties are used in nuclear medicine for both diagnosis and treatment. An imaging tracer made with radionuclides is called a radioactive tracer. A pharmaceutical drug made with radionuclides is called a radiopharmaceutical.

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1. radioactive material

   Radioactive material refers to any substance or material that spontaneously emits ionizing radiation, such as alpha, beta, or gamma rays, due to the instability of its atomic nucleus. This decay process can potentially cause harm to living organisms. The material can be a natural element from the periodic table, a product of a man-made nuclear reaction, or even a combination of both.

Matched Categories

1. • Material

How to pronounce radioactive material?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say radioactive material in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of radioactive material in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of radioactive material in Pythagorean Numerology is: 6

Examples of radioactive material in a Sentence

1. Benjamin Hautecouverture:

   It is plausible that certain (terrorist) organisations could attack transports of nuclear material or civilian installations and try to steal radioactive material, there is a black market where such material is available coming from central and eastern Europe.

2. Rafael Mariano Grossi:

   The military conflict is putting Ukraine’s nuclear power plants and other facilities with radioactive material in unprecedented danger, we must take urgent action to make sure that they can continue to operate safely and securely and reduce the risk of a nuclear accident that could have a severe health and environmental impact both in Ukraine and beyond.

3. David Brenner:

   The major source of radiation exposure is the radioactive material on the ground, the immediate effects can be lethal, you can develop acute radiation syndrome which you can die from in a few minutes or hours. There are also lots of delayed syndromes where you may not die until a few weeks and even long-term effects like cancer risks.

4. Rafael Grossi:

   All of the safety systems of the six reactors at the plant were not affected at all and there has been no release of radioactive material, however, as you can imagine, the operator and the regulator have been telling us that the situation naturally continues to be extremely tense and challenging.

5. Kevin Kamps:

   It is shocking just how little radioactive material can do so much damage.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=radioactive material
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Radioactive_Material
3. ^ ChatGPT
   https://chat.openai.com