What does radioactive source mean?
Definitions for radioactive source
ra·dioac·tive source
This dictionary definitions page includes all the possible meanings, example usage and translations of the word radioactive source.
Wikipedia
Radioactive source
A radioactive source is a known quantity of a radionuclide which emits ionizing radiation; typically one or more of the radiation types gamma rays, alpha particles, beta particles, and neutron radiation. Sources can be used for irradiation, where the radiation performs a significant ionising function on a target material, or as a radiation metrology source, which is used for the calibration of radiometric process and radiation protection instrumentation. They are also used for industrial process measurements, such as thickness gauging in the paper and steel industries. Sources can be sealed in a container (highly penetrating radiation) or deposited on a surface (weakly penetrating radiation), or they can be in a fluid. As an irradiation source they are used in medicine for radiation therapy and in industry for such as industrial radiography, food irradiation, sterilization, vermin disinfestation, and irradiation crosslinking of PVC. Radionuclides are chosen according to the type and character of the radiation they emit, intensity of emission, and the half-life of their decay. Common source radionuclides include cobalt-60, iridium-192, and strontium-90. The SI measurement quantity of source activity is the Becquerel, though the historical unit Curies is still in partial use, such as in the USA, despite their NIST strongly advising the use of the SI unit. The SI unit for health purposes is mandatory in the EU. An irradiation source typically lasts for between 5 and 15 years before its activity drops below useful levels. However sources with long half-life radionuclides when utilised as calibration sources can be used for much longer.
Numerology
Chaldean Numerology
The numerical value of radioactive source in Chaldean Numerology is: 7
Pythagorean Numerology
The numerical value of radioactive source in Pythagorean Numerology is: 8
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