title: Preparation of a (219)Rn trap to measure the half-life of (211)Pb.
abstract: A Petri dish was filled with liquid scintillator and then used to trap (219)Rn from a (223)Ra source. The liquid scintillator was then transferred to a vial which was measured in a custom-built triple-to-double coincidence ratio (TDCR) counter. Two Cherenkov samples were prepared in a similar manner. The measurements were used to determine the (211)Pb half-life which was found to be 36.165(37)min.
authors.affiliation: Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany. Electronic address: Karsten.Kossert@ptb.de.
authors.forename: Karsten
authors.initials: K
authors.lastname: Kossert
mesh_terms: D006207:Half-Life; D007856:Lead Radioisotopes / Q000032:analysis* / Q000737:chemistry*; D011829:Radiation Dosage; D011886:Radon / Q000737:chemistry*; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000379:methods*; D012680:Sensitivity and Specificity; D013048:Specimen Handling / Q000379:methods*
chemical_list: D007856:Lead Radioisotopes; D011886:Radon
keywords: (211)Pb half-life; (223)Ra; Liquid scintillation counting; TDCR