Once the reactor has shut down, there remains "decay heat" from traces of other radioactive isotopes.
Resulting electrical pulses are analyzed by software that can determine which isotopes are present.
Your potato chips has nothing in common with isotopes spewing out of blown up reactors.
Iran insists its purposes are purely civilian, asserting it needs enriched uranium to make medical isotopes.
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This release of energy makes the isotopes easier to detect with standard physics technique.
Biological organisms absorb and store radioactive isotopes incorporated in the tissues that make up the organisms.
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The previous highest level had been 20%, typically used for hospital isotopes and research reactors.
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There are also different oxygen isotopes in this meteorite than in younger Martian meteorites.
Resulting electrical pulses are analyzed by software that can determine on the fly which isotopes are present.
The origin of the goods is determined by measuring the levels of strontium isotopes in the material.
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But the pieces need to be found quickly because the isotopes last for only days or weeks.
Computer models and other new technologies such as isotopes are providing quantitative tools for characterizing these processes.
In any event, Iran could buy medical isotopes it needs from private suppliers, as most other countries do.
If he fails to make it in radioactive isotopes, Inwentash has another chance to strike it big in oil.
In this case, the energy released from the decaying isotopes burn your cells.
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Xenon isotopes were detected after the first test but not after the second.
Moreover, the radiation would also have generated isotopes (for example, krypton-83 and xenon-126).
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Iran says it needs enriched uranium for its Bushehr nuclear power plant to generate electricity, and to produce medical isotopes.
Subsequently, France would convert the uranium into fuel rods for use in a reactor in Tehran that produces medical isotopes.
From a public health perspective, the most important isotopes are short-lived isotopes of iodine (like Iodine-131), Cesium-137, Strontium-90, and possibly Plutonium-239.
Finding certain isotopes - xenon gases in particular - would help experts determine whether a plutonium or uranium-based device was used.
Something that many are blissfully unaware of are the isotopes of C02.
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Different geographic regions have different levels of strontium, so by examining those isotopes, archaeologists are able to figure out where materials originated.
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And by looking at the difference in the ratio of isotopes it was concluded that Mars lost 99.99 percent of its atmosphere.
When a meteor lands, researchers can get a better fix about its size and composition by studying isotopes found in the fragments.
That will depend on the particular isotopes produced and their half-life ages.
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Some isotopes can mimic the chemical reactions of the elements you eat.
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South Korean experts say they have not detected any radioactive isotopes from North Korea's nuclear test, hampering efforts to assess the device.
When these isotopes are combined at high temperatures, a small amount of mass is lost and a colossal amount of energy is released.
That technique uses a magnetic field to hold large volumes of the same isotopes of hydrogen inside a doughnut-shaped vessel, called a tokamak.
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