isotopes


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Related to isotopes: Radioactive isotopes

isotopes

1. Atoms of the same element (all chemically identical) having the same atomic number but containing different numbers of neutrons, giving a different mass number.
2. Atoms of an element with an identical number of protons but differing numbers of neutrons.
Translations
References in periodicals archive ?
Moore, "Iron isotopes constrain biogeochemical redox cycling of iron and manganese in a Palaeoproterozoic stratified basin," Earth and Planetary Science Letters, vol.
Isotopes in iron oxides laid down two billion years ago hold clues to the conditions in which they were created
Presently, the oldest evidence of microbial life on Earth comes to us in the form of stable isotopes. The chemical elements charted on the periodic are defined by the number of protons in their nuclei, for example, hydrogen atoms have one proton, helium atoms have two, carbon atoms contain six.
ANSTO has become the second facility in the world to install a stack monitor of this kind, after Radioelements (IRE) in Fleurus, Belgium, with both facilities producing potentially life-saving medical isotopes, including Molybdenum?99.
Imagine you have 1,000 plutonium-239 isotopes. In 24,100 years which is its half-life, you will be left with 500 plutonium-239 Isotopes.
In conjunction with the acquisition, BWXT's medical isotopes business will be led by Tom Burnett, vice president and general manager of BWXT ITG Canada Inc.
These different varieties of hydrogen, carbon, nitrogen and sulfur are called isotopes. They are a trove of forensic information that is only starting to be tapped in the 21st century.
dorsalis adult was ground, which represents the isotope ratios derived from the fruit consumed by its larva, marking its geographic origin, through its match with hydrogen isotopes in rainwater (Bortolotti et al.
US-based safety testing and sterilisation specialist Sotera Health LLC has entered into a definitive asset purchase agreement to sell the Medical Isotopes segment of its Nordion business to a subsidiary of BWX Technologies, Inc, the company said.
Isotopes are atoms of the same element with the same number of protons in their nuclei, but different numbers of neutrons.
Lead occurs as 4 main isotopes: [sup.208]Pb, [sup.206]Pb, and [sup.207]Pb are formed through radioactive decay, whereas 204Pb is a stable isotope.
By the 1970s, many studies had been published on silicon isotope composition of meteorites and lunar rocks, but not until 1996 have scientists interested themselves much in the four isotopes of silicon on their home planet, where it is a major food source for plants, animals, and computers.