Measured absorbed dose rates from semi-infinite hemispherical volumes of /sup 133/Xe

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Health Phys.; (United States)

DOI:https://doi.org/10.1097/00004032-198607000-00009· OSTI ID:6689182

Munyon, W J; Barber, D E; Howley, J R

Surface absorbed dose rates from different hemispheric volumes of /sup 133/Xe have been measured directly with an extrapolation chamber. The results indicate that a linear relationship exists between the radius of the cloud volume and the surface absorbed dose rate for radii between 0 and 23 cm. If cloud volumes with radii larger than 23 cm are taken to be infinite with respect to the range of the charged particles emitted, the absorbed dose rate calculated based on that assumption will be within the uncertainty of any measurement of absorbed dose rate that might be made. For hemispheric volumes having radii less than or equal to 23 cm, the surface absorbed dose rate in tissue-equivalent material, in mGy h-1, is approximated (+/- 20%) by the product of (1.30 mGy h-1 cm-1 kBq-1 cm3) X (cloud radius, cm) X (cloud activity concentration, kBq cm-3).

• Research Organization: Univ. of Minnesota, Minneapolis (USA)
• OSTI ID: 6689182
• Journal Information: Health Phys.; (United States), Journal Name: Health Phys.; (United States) Vol. 51:1; ISSN HLTPA
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
655003* -- Medical Physics-- Dosimetry
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
DOSES
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZATION CHAMBERS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
MEASURING INSTRUMENTS
NUCLEI
RADIATION DETECTORS
RADIATION DOSES
RADIOISOTOPES
TISSUE-EQUIVALENT MATERIALS
XENON 133
XENON ISOTOPES