The CCRI News resource

The  CCRI Section II (Measurement of Radionuclides) met at the BIPM in Sèvres on 5-7 June 2023. There were 24 members and guests meeting in person, and an additional 19 total at various times virtually. The first half-day was held jointly with the KCWG(II).

The main recommendations and actions from this meeting were:

• The opening of the BIPM(II)-K5 comparison, following the successful 60Co study, using the ESIR (the extension of the SIR to beta and alpha emitters) with 11 possible radionuclides in the first quarter of 2024.
• The development of RMO-based SIRTIs, as they will be very good additions to facilitate the comparison of short-lived isotopes for countries geographically very far from the BIPM. For RMOs seeking to develop such a detector, four conditions were adopted so that the detector and its use would mirror the BIPM-based SIRTI.

Lisa Karam (NIST) is the current chair of CCRI(II), which was renewed until 2025. A request was made for a new Vice-Chair for CCRI(II) (succeeding Freda Van Wyngaardt) who is intended to become the Chair following the CCRI(II) 2025 meeting.