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isotope
Longman Dictionary of Contemporary English
isotope
noun
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
radioactive
▪ The new ingredient in the assessment of how many deaths the Windscale cloud caused is the radioactive isotope, polonium 210.
▪ Electricity produced by radioactive isotopes, strontium 90, polonium 210, by thermoelectric energy conversion.
▪ The simplest radioactive methods are based on decay of a radioactive isotope into a stable one.
▪ Every radioactive isotope provides an independent clock for measuring geological time.
▪ She could hear the adjacent streetlight sizzling like a radioactive isotope.
▪ Asteroids contain a variety of rare radioactive isotopes of potassium, uranium, thorium, rubidium, and so on.
▪ Increasing the helium-3 supply would mean scaling up the production of the dangerous radioactive isotope tritium.
stable
▪ Each case has to be considered on its merits where an ambiguous answer emerges from the stable isotope data.
▪ As well as decaying naturally to a stable lead isotope, U occasionally also divides in half.
▪ A stable isotope of potassium, 9K, is converted to 39Ar by neutron bombardment of the sample to be dated.
■ NOUN
analysis
▪ Aiding his efforts was an improved method for dating rock known as uranium-lead isotope analysis.
data
▪ Each case has to be considered on its merits where an ambiguous answer emerges from the stable isotope data.
lead
▪ As well as decaying naturally to a stable lead isotope, U occasionally also divides in half.
▪ Nevertheless the association or dissociation of the lead isotope signatures for ancient glasses contributes to the overall technological picture for them.
oxygen
▪ Woodhead etal. combine such analyses with oxygen isotope analyses, and it is variations in the latter that are particularly significant.
▪ The oxygen isotope chemistry of the corals reflects the composition and origin of the water in which they lived.
▪ The deep-sea core oxygen isotope record is a framework for a relative chronology for the Pleistocene.
ratio
▪ Measurements of the resulting isotope ratios closely approximated those found in carbonaceous chondrite meteorites.
signature
▪ Nevertheless the association or dissociation of the lead isotope signatures for ancient glasses contributes to the overall technological picture for them.
EXAMPLES FROM CORPUS
▪ Asteroids contain a variety of rare radioactive isotopes of potassium, uranium, thorium, rubidium, and so on.
▪ But by looking at the levels of various isotopes, geochemists can group the rocks that have similar deep-earth origins.
▪ Electricity produced by radioactive isotopes, strontium 90, polonium 210, by thermoelectric energy conversion.
▪ The isotopes give off long-lasting alpha radiation and the waste will remain dangerous for 3000 years or more.
▪ There is also a section on isotope dilution analysis.
▪ Thiemens said that it might even be possible to apply the effect to enrichment of certain isotopes.
▪ Uranium has two radioactive isotopes, each of which decays to an isotope of lead and helium.
▪ Woodhead etal. combine such analyses with oxygen isotope analyses, and it is variations in the latter that are particularly significant.
Douglas Harper's Etymology Dictionary
isotope

1913, literally "having the same place," introduced by British chemist Frederick Soddy (1877-1956) on suggestion of Margaret Todd, from Greek isos "equal" (see iso-) + topos "place" (see topos); so called because despite the different atomic weights, the various forms of an element occupy the same place on the periodic table.

Wiktionary
isotope

Etymology 1 n. (context physics English) Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. As a consequence, atoms for the same isotope will have the same atomic number but a different mass number (atomic weight). Etymology 2

vb. (context topology transitive English) To define or demonstrate an isotopy of (one map with another).

WordNet
isotope

n. one of two or more atoms with the same atomic number but with different numbers of neutrons

Wikipedia
Isotope (band)

Isotope was a British jazz-rock band fronted by guitarist Gary Boyle.

Boyle founded the band in June 1972 and a first album, Isotope, was largely composed by keyboardist Brian Miller. Jeff Clyne played bass and Nigel Morris played drums. Clyne and Miller left in 1974, however, and were replaced by Hugh Hopper and Laurence Scott (b. 7 Feb 1946) respectively. After touring, this new line-up recorded the band's second album Illusion. In late 1974 the band appeared on film on BBC 2's The Old Grey Whistle Test playing "Spanish Sun" from the album.

Further touring followed and there were various personnel changes. Deep End was recorded in 1976 with two keyboardists Zoe Kronberger and Frank Roberts. Hopper played on one track, but the bass was otherwise played by Dan K. Brown. Morris Pert also played percussion.

Boyle subsequently focused on a solo career.

Isotope (disambiguation)

Isotopes are any of the several different forms of an element each having different atomic mass (mass number).

Isotope can also refer to:

  • Isotope (band), a British jazz-rock band (1972–1976)
  • Albuquerque Isotopes, a minor league baseball team of the Pacific Coast League
  • Springfield Isotopes, a fictional baseball team in the TV show The Simpsons
  • Isotopes Punk Rock Baseball Club, a Canadian baseball-themed punk rock band
  • Isotope 217, a jazz band from Chicago, United States
  • Isotope 244, a video game developer based in the USA
  • Isotope (Jordan algebra) in mathematics, a method of modifying the product on a Jordan algebra
  • An isotope of an algebra: see Isotopy of algebras
  • An isotope of a loop or quasigroup: see Isotopy of loops
Isotope

Isotopes are variants of a particular chemical element which differ in neutron number, although all isotopes of a given element have the same number of protons in each atom. The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table. The number of protons within the atom's nucleus is called atomic number and is equal to the number of electrons in the neutral (non-ionized) atom. Each atomic number identifies a specific element, but not the isotope; an atom of a given element may have a wide range in its number of neutrons. The number of nucleons (both protons and neutrons) in the nucleus is the atom's mass number, and each isotope of a given element has a different mass number.

For example, carbon-12, carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13 and 14 respectively. The atomic number of carbon is 6, which means that every carbon atom has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively.

Usage examples of "isotope".

An isotope discovered only four years earlier, called U-235 or actinouranium, could conceivably fire off in a self-sustaining explosion of incalculable magnitude.

Neither Hiro nor Eliot ever mentions, or even notices, the by-now-obvious fact that Fisheye is traveling with a small, self-contained nuclear power source - almost certainly radiothermal isotopes like the ones that power the Rat Thing.

This is where the geochemists come in, for the isotopes accumulate at different rates depending on how much oxygen or carbon dioxide is in the atmosphere at the time of their creation.

The thermoelectric nuclear isotope power generation used in some spacecraft would not work because the molten-iron environment is already hotter than the decaying radioactive isotope.

It could also export energy, in synthetic transuranium isotopes or pure radiation.

If the fuel melted, if the isotopes and transuranium elements fused, if the metals went critical and he remained within a mile of the complex, he would never feel the flash that vaporized him.

This had cost the Shaper economy many gigawatts of precious energy and tons of rare metals and isotopes.

Apparently such a use of stabilized isotopes had never occurred to the Corviki.

A lot of my own time is taken up with money, an almost obsessive issue for most British-based researchers these days: how to find the funds for the salaries of the post-docs, the grants to the students, the capital costs of new equipment, the consumable budget to buy the isotopes and the reagents.

PyrE is a solid solution of transplutonian isotopes, releasing thermonuclear energy on the order of stellar Phoenix action.

Certain isotopes lost radioactivity very rapidly, in a matter of hours or minutes.

Oppy and Groves droned on about problems of the isolation of isotopes and allotropic states of plutonium, Joe wondered why he had gone to bed with Mrs Augustino.

A blast smudge showed on the desert floor where a practice blast, a mere 100 tons of TNT spiced with isotopes, had been set off on V-E Day.

You never gave me any restrictions to observe in entertaining the Hokas, so this mess tonight is your fault, and it was Miss Hostrup and I who pulled your isotopes out of the pile.

Isotope 114m was an exceedingly intense gammaray emitter, and it was yet to be determined whether the DU casings would be adequate in keeping the deadly radiation contained.