Details

Autor(en) / Beteiligte

• Broda, R.
• Ziemek, T.
• Marganiec-Gałązka, J.
• Czudek, M.
• Kossert, K.
• Listkowska, A.
• Lech, E.
• Tymiński, Z.
• Saganowski, P.
• Coulon, R.
• Michotte, C.

Titel

Measurement of the activity and determination of the half-life of 225Ac at POLATOM

Ist Teil von

• Applied radiation and isotopes, 2023-11, Vol.201, p.110987-110987, Article 110987

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2023

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• A method for absolute measurements of the 225Ac activity in equilibrium with its progeny was developed. Measurements were performed using the triple-to-double coincidence ratio (TDCR) method in two different TDCR counters. The activity concentration of an 225Ac solution was determined and the solution was sent to the SIR system for a comparison. The half-life of 225Ac was determined by one of the TDCR counters and found to be 9.9150(63) days. •Detailed determination of the counting efficiency of the 225Ac in radioactive equilibrium with its progeny.•Description of the measurements of the activity of 225Ac sources using the TDCR method.•Result of activity comparison in the International Reference System (SIR) at BIPM.•Results of half-life determination of 225Ac at POLATOM compared to other published values.