The effects of size and shape of the irradiation vessel on the response of some chemical dosimetry systems to photon irradiation

✍ Scribed by Saveta Miljanić; Dušan Ražem

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 882 KB
• Volume: 47
• Category: Article
• ISSN: 0969-806X
• DOI: 10.1016/0969-806x(95)00061-2

✦ Synopsis

The effects of size and shape on dose absorbed in several chemical dosimeter solutions: Fricke, ethanol-chlorobenzene (ECB), and chlorobenzene-ethanol-trimethylpentane (CET), irradiated in different vessels by a Gammacell irradiator, were investigated in an effort to assess the adequacy of an irradiator of that type for dosimeter calibration purposes. Energy absorption characteristics of dosimeters were calculated using a cavity theory for 6°Co ~,-rays, E= 1.25 MeV and for the Gammacell spectrum, respectively. The calculations showed that the change of the incident irradiation energy from 1.25 MeV photons to the Gammacell spectrum had a negligible influence on the respective energy absorption characteristics of dosimetric solutions used. The wall effect was also negligible for irradiation vessels with inner diameter greater than 1 cm.