isotope abundance

isotope abundance

[′ī·sə‚tōp ə¦bən·dəns]
(nuclear physics)
The ratio of the number of atoms of a particular isotope in a sample of an element to the number of atoms of a specified isotope, or to the total number of atoms of the element.
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References in periodicals archive ?
The isotope abundance ratios were a particularly important clue, because they could reveal where the iron came from-one variant pointed to iron from the ancient Loess Plateau of northern China, a frequent source of iron-rich dust in the northwest Pacific, while another suggested the younger, more volcanic continental shelf was the iron source.
A sample of paper titles for ITC includes atomic and molecular processes in magnetic fusion plasmas, plasma polarization spectroscopy, isotope abundance analysis from stellar spectra, and radiotherapy.
The solar research team has managed, for the first time, to substantiate with consistent physical models every link in the complex chain, from the isotope abundance in the icepack to the sunspot number.
Stable isotope abundance measurements in Canada were initiated by Henry ('Harry') G.
Natural isotope abundance in bowhead whale (Balaena mysticetus) baleen: markers of aging habitat usage.
The isotope abundance measurements suggested that Myrica did not obtain all of its nitrogen through symbiotic fixation since the 15N values of its tissues were not more similar to air compared to the grasses [ILLUSTRATION FOR FIGURE 1 OMITTED].
Particularly in case of MIDA, it includes the calculation of natural isotope abundances and relative isotope abundances.
Effects of diet, climate and physiology on nitrogen isotope abundances in terrestrial foodwebs.
Relative isotope abundances for a selected chemical element can be found in the CRC Handbook of Chemistry and Physics [6].
Utilizing stable isotope abundances of lichens to monitor environmental change.
This technique is potentially the most accurate indicator of the source(s) of lead to the child because there are often measurable differences in lead isotope abundances between different sources of lead exposure.
The Appendix on Atomic Masses and Isotope Abundances has been expanded to provide tools to aid in determination of elemental composition from isotope peak intensity ratios.