TY - JOUR AU - Bergeron, Denis E. AU - Cessna, Jeffrey T. AU - Broder, Brittany AU - Pibida, Leticia AU - Fitzgerald, Ryan P. AU - DiGiorgio, Morgan AU - Napoli, Elisa AU - Zimmerman, Brian E. C2 - Applied Radiation and Isotopes DA - 2024-04-20 04:04:00 DO - https://doi.org/10.1016/j.apradiso.2024.111326 LA - en M1 - 209 PB - Applied Radiation and Isotopes PY - 2024 TI - Activity standard and calibrations for 227Th with ingrowing progeny UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957117 ER -