title: Radon tightness of different sample sealing methods for gamma spectrometric measurements of ²²⁶Ra.
abstract: Different methods for sealing sample containers for (222)Rn when measuring (226)Ra through its progenies (214)Pb and (214)Bi using gamma-ray spectrometry have been investigated. Results show that a method consisting of vacuum packaging of the sample container in a sealed aluminium lined bag gives excellent results for ensuring radon tightness. However, care should be taken to fill the sample container completely in order to avoid systematic errors due to radon accumulating in the void volume.
authors.affiliation: Norwegian Radiation Protection Authority, P.O. Box 55, 1332 Østerås, Norway. Alexander.Mauring@nrpa.no
authors.forename: Alexander
authors.initials: A
authors.lastname: Mauring
authors.forename: Torbjörn
authors.initials: T
authors.lastname: Gäfvert
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007554:Isotopes / Q000737:chemistry / Q000302:isolation & purification*; D019064:Product Packaging / Q000295:instrumentation* / Q000379:methods; D011829:Radiation Dosage; D011835:Radiation Protection / Q000295:instrumentation* / Q000379:methods; D011886:Radon / Q000032:analysis* / Q000737:chemistry*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013048:Specimen Handling / Q000295:instrumentation* / Q000379:methods; D013051:Spectrometry, Gamma / Q000295:instrumentation* / Q000379:methods
chemical_list: D007554:Isotopes; D011886:Radon
keywords: Gamma spectrometry; HPGe detectors; NORM measurements; Radon emanation; Sample preparation