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Iridium-192 is normally produced by neutron activation of natural-abundance iridium metal. [3] Iridium-192 is a very strong gamma ray emitter, with a gamma dose-constant of approximately 1.54 μSv ·h −1 · MBq −1 at 30 cm, and a specific activity of 341 TBq ·g −1 (9.22 kCi ·g −1 ).
Iridium-192 is a very strong gamma ray emitter, with a gamma dose-constant of approximately 1.54 μSv·h −1 ·MBq −1 at 30 cm, and a specific activity of 341 TBq·g −1 (9.22 kCi·g −1). [ 14 ] [ 15 ] There are seven principal energy packets produced during its disintegration process ranging from just over 0.2 to about 0.6 MeV .
is about 662 keV. These gamma rays can be used, for example, in radiotherapy such as for the treatment of cancer, in food irradiation, or in industrial gauges or sensors. 137 Cs is not widely used for industrial radiography as other nuclides, such as cobalt-60 or iridium-192, offer higher radiation output for a given volume.
High-energy gamma radiation from 192 Ir can increase the risk of cancer. External exposure can cause burns, radiation poisoning, and death. Ingestion of 192 Ir can burn the linings of the stomach and the intestines. [107] 192 Ir, 192m Ir, and 194m Ir tend to deposit in the liver, and can pose health hazards from both gamma and beta radiation. [61]
The gamma ray field can be characterized by the exposure rate ... and Γ is the exposure rate constant, ... iridium-192 (unfiltered) 4.69 [34] radium-226:
192 Ir 193 Ir 62.7% stable Data sets read by {{Infobox element}} Name and identifiers Symbol etymology (11 non-trivial) ... gamma (internally, "epsi" is the code for ...
As of 2003 the isotopes Antimony-124, argon-41, cobalt-60, iodine-131, iridium-192, lanthanum-140, manganese-56, scandium-46, sodium-24, silver-110m, technetium-99m, and xenon-133 were most commonly used by the oil and gas industry because they are easily identified and measured.
Iridium-192: 74 days Gamma rays The most common uses of Iridium-192 are: cervical cancer, head and neck cancer, and prostate cancer. Ir-192 can also be used in the radionuclide therapy called high-dose rate brachytherapy. 14: Xenon-133: 5.2 days Beta and gamma emissions