flux monitor

https://doi.org/10.1351/goldbook.08726
Radiation detector to measure energy flux density.
Note:
A flux monitor may be a known amount of material irradiated together with a sample; the induced radioactivity is used to measure the flux density during the irradiation.
Source:
PAC, 2021, 93, 69. (Vocabulary of radioanalytical methods (IUPAC Recommendations 2020)) on page 81 [Terms] [Paper]