radiation catalyst

https://doi.org/10.1351/goldbook.14068
Substance absorbing ionising radiation and able to produce chemical transformations of the reaction partners, repeatedly producing intermediate transformations and regenerating its chemical composition after each cycle of such interactions.
Source:
PAC, 2011, 83, 931. (Glossary of terms used in photocatalysis and radiation catalysis (IUPAC Recommendations 2011)) on page 981 [Terms] [Paper]