particle density

in nuclear chemistry
https://doi.org/10.1351/goldbook.P04424
The number of @N04237-1@ (@N04237-2@ or @E02034@) divided by the containing volume.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1547 [Terms] [Paper]