external standardization for quenching correction

https://doi.org/10.1351/goldbook.08725
Measurement method to obtain a quenching correction through the use of a gamma-radiation source to generate a spectrum of Compton electrons within the sample vial.
Source:
PAC, 2021, 93, 69. (Vocabulary of radioanalytical methods (IUPAC Recommendations 2020)) on page 80 [Terms] [Paper]