Activity standardization of H-3 with the new TDCR system at PTB

作者：Naehle O^*; Kossert K; Cassette P

来源：Applied Radiation and Isotopes, 2010, 68(7-8): 1534-1536.

DOI：10.1016/j.apradiso.2009.11.057

• H-3
• Activity standardization
• Liquid scintillation counting
• TDCR

A triple-to-double coincidence ratio (TDCR) liquid scintillation counting system (Pochwalski et al., 1988; Grau Malonda and Coursey, 1988) was set up at the Physikalisch-Technische Bundesanstalt (PTB) to be used as an additional technique for primary activity standardization. The optical chamber of the system was designed in our laboratory, expending great effort to achieve maximum light transmission to the photomultiplier tubes (PMT) and, consequently, a maximum counting efficiency and low uncertainties A programme to compute the counting efficiencies and to analyse the measurement data was developed and tested The software can also be used to allow for PMT asymmetries The system and recently developed analysis procedures were used for the activity standardiza

• 出版日期2010-8
• 单位中国地震局