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 (https://doi.org/10.1515/pac-2019-0302)