A new TDCR-LS Counter using Channel photomultiplier tubes

作者：Ivan C^*; Cassette P; Sahagia Maria

来源：Applied Radiation and Isotopes, 2008, 66(6-7): 1006-1011.

DOI：10.1016/j.apradiso.2008.02.075

• TDCR LSC
• Channel photomultiplier tubes

A new Triple to Double Coincidence Ratio (TDCR) liquid scintillation (LS) counter using recently available photodetectors, the Channel photomultiplier (CPM) tubes, was constructed and tested in the framework of a scientific cooperation between IFIN-HH and LNHB. The prototype LS counter uses 3CPM tubes arranged symmetrically in an optical chamber around a standard LS vial. The behavior of the prototype was first evaluated with a light emitting diode (LED) light pulser. The counter was then compared against a TDCR counter using conventional photomultiplier tubes, by measuring Fe-55, H-3, Ni-63 and Sr-90/Y-90 LS sources prepared in commercial liquid scintillation cocktails. Although the observed detection efficiency was significantly lower than the one achieved with the traditional counter, we found a remarkable agreement on the activity determination using the two counters. Details on the prototype and the measurement results obtained are discussed in this paper.

• 出版日期2008-7
• 单位中国地震局