Measurement of average mass attenuation coefficient of air for <sup>137</sup>Cs gamma-ray irradiation beam
Abstract The average mass attenuation coefficient of air for the KRISS 137 Cs gamma-ray irradiation beam was measured using a 30 cm-long vacuum-sealable cylindrical column. Six different models of ionization chambers were employed for the measurement. Under ambient room conditions, the average mass attenuation coefficient was found to be (0.0778 ± 0.0012) cm²/g across the six chambers. This coefficient will be used to adjust the variation in air kerma with air density for the 137 Cs gamma-ray irradiation beam.
Authors
- Chul‐Young Yi (ORCID: https://orcid.org/0000-0003-4466-9710)
- Jong In Park (ORCID: https://orcid.org/0000-0001-7059-3540)
- Yun Ho Kim
- In Jung Kim (ORCID: https://orcid.org/0000-0002-3576-7987)
- Young-Min Seong
Institutions
- Korea Research Institute of Standards and Science (KR)
Publication Details
- Journal
- Metrologia
- Published
- 2024-09-27
- DOI
- https://doi.org/10.1088/1681-7575/ad8091
- Primary Topic
- Radiation Detection and Scintillator Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00