isotopic enrichment factor

https://doi.org/10.1351/goldbook.I03342
For a material enriched in a specified @[email protected], the ratio between the @[email protected] and the @[email protected] of that isotope.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1541 [Terms] [Paper]