title: Logistic of surveys of retrospective radon concentrations by home-stored CDs/DVDs.
abstract: Recently, a method for rather precise retrospective (222)Rn measurements, based on home-stored compact disks (CDs)/DVDs, has demonstrated a promising potential for wide application. In Bulgaria, pilot surveys have been initiated based on voluntarily provided CDs/DVDs. The results showed that large-scale surveys could be efficiently organised. However, several problems were identified and are discussed in the report. The first is the relatively small proportion of participants (30-50 %) that actually provided disks. Other addressed topics include the compatibility between results of different disks from one place, the accuracy of dating CDs/DVDs and the possibility for individual a posteriori calibration of each disk. The possibility to follow year-to-year variations by disks of different age is also discussed.
authors.affiliation: Faculty of Physics, University of Sofia St. Kliment Ohridski, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria.
authors.forename: I
authors.initials: I
authors.lastname: Dimitrova
authors.forename: D
authors.initials: D
authors.lastname: Pressyanov
authors.forename: S
authors.initials: S
authors.lastname: Georgiev
authors.forename: P
authors.initials: P
authors.lastname: Yankov
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D002031:Bulgaria; D016250:Compact Disks; D006798:Housing; D006801:Humans; D011834:Radiation Monitoring / Q000295:instrumentation*; D011886:Radon / Q000032:analysis*
chemical_list: D000396:Air Pollutants, Radioactive; D011886:Radon