JOURNAL ARTICLE

Evaluation of an ionization chamber characteristics for 222Rn calibration.

  • Published In: Radiation Protection Dosimetry, 2024, v. 200, n. 16-18. P. 1696 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Furukawa, Rio; Janik, Miroslaw; Kodaira, Satoshi; Hashimoto, Hiroki; Omori, Yasutaka; Tokonami, Shinji; Hosoda, Masahiro; Shimizu, Morihito; Manabe, Seiya; Matsumoto, Tetsuro; Shimodan, Chihiro; Sato, Yasushi; Harano, Hideki 3 of 3

Abstract

The article focuses on the development and evaluation of a novel calibration method for an inner-through-type ionization chamber (IC) used as a working standard to measure radon-222 (²²²Rn) activity concentrations. The National Metrology Institute of Japan (NMIJ) assessed the calibration factor (CF), expressed in becquerels per cubic meter per ampere [Bq m⁻³ A⁻¹], under conditions with and without gas circulation, finding consistent CF values of approximately (2.0 ± 0.2) × 10¹⁶ Bq m⁻³ A⁻¹ at low output currents (~10⁻¹³ A). The study highlights that the CF varies with radon concentration levels and that gas flow conditions do not significantly affect the CF, emphasizing the need for further research to reduce uncertainty at low radon concentrations. This work contributes to improving metrological traceability and reliability in radon monitoring by providing a stable and accurately calibrated working standard.

Additional Information

  • Source:Radiation Protection Dosimetry. 2024/11, Vol. 200, Issue 16-18, p1696
  • Document Type:Article
  • Subject Area:Chemistry
  • Publication Date:2024
  • ISSN:01448420
  • DOI:10.1093/rpd/ncae028
  • Accession Number:180905345
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