radioactive isotopes


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ra·di·o·ac·tive i·so·topes

(rā'dē-ō-ak'tiv ī'sŏ-tōps)
Isotopes with an unstable nuclear composition; such nuclei decompose spontaneously by emission of a nuclear electron (β particle) or helium nucleus (α particle) and radiation (γ rays), thus achieving a stable nuclear composition; used as tracers, and as radiation and energy sources.
See also: half-life

ra·di·o·ac·tive i·so·topes

(rā'dē-ō-ak'tiv ī'sŏ-tōps)
An isotope with an unstable nuclear composition; used as tracers, and as radiation and energy sources.
References in periodicals archive ?
Subject A (male, 97) was fully compliant; subject B (male, 21) said he'd showered on Sunday and it was too early for another bath; subject C (male, 24) said: "What do you mean, radioactive isotopes? I'm not getting into a bath with that in it"; and subject D (female, age withheld) said: "Don't be silly," and walked off shaking her head.
London, Feb 15 ( ANI ): South Korean experts have said that they did not detect any radioactive isotopes from Pyongyang's nuclear test.
They caught what KamLAND dubbed geoneutrinos, or more precisely geo-antineutrinos - emitted when radioactive isotopes decay.
The data also reveal that regular measurements of radiation exposure and radiation protective measures need not be undertaken in theatres where surgeons are working with radioactive isotopes regularly.
Three radioactive isotopes namely the iodine-131, caesium-137 and
of Michigan) compile 12 chapters for radiologists to gain a complete perspective on the imaging of primary carcinomas of the liver and their diagnosis and staging, as well as epidemiology, pathology, and surgical and non-surgical treatment options for both hepatocellular carcinoma and cholangiocarcinoma, including newer techniques with intra-arterial therapy, such as selective internal radiation with radioactive isotopes.
Antimony metal provider United States Antimony Corp (OTCBB:UAMY.OB) reported on Monday the receipt of an order to supply a minimum of 1,500 metric tons of BRZ zeolite for remediation of radioactive isotopes from the former Western New York Nuclear Service Center (WNYNSC).
Academics will join forces with experts in nuclear medicine at Manchester Royal Infirmary to use medical gamma-ray cameras to track radioactive isotopes in soil samples from a US civil nuclear site.
"We're seeing a nice increase in the need for custom synthesis using radioactive isotopes in the ADME/Tox area," he explained.
An Alltel spokesman says that the handheld detection device will be made available on select telephones, adding that "when used in conjunction with supported survey equipment, the HazMasterG3 is the only decision support system that can identify an extremely broad range of radioactive isotopes.
The license that was obtained allowed for the purchase of up to five portable moisture density gauges widely used in construction, in which are encased small amounts of caesium-137 and americium 241, two highly radioactive isotopes.

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