The WUW ML bundle detector: A flow through detector for α-emitters
1999
Abstract Using conventional laboratory ware, we designed and manufactured a flow through cell for monitoring α-bearing solutions. The cell consists of a bundle of thermoplastic, transparent tubes coated with a thin layer of the meltable scintillator MELTILEX TM at the inner surface. With appropriate energy windows set, the detector can suppress β-particles to a great extent due to its geometrical dimensions. For pure α-solutions, the detection limits are 5 Bq/ml, for composite nuclide mixtures, the detector is capable to monitor the decontamination of medium active waste (≤10 7 Bq/ml) down to 100 Bq α/g solution. At a throughput of 1 ml/s, the pressure build-up amounts to ∼2 bar. We have developed a quality control program to ensure the regularity of the individual bundle loops.
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