Abstract
Dry Artemia eggs were used to determine the biological effectiveness of a 29-MeV electron beam at depths of 2.3 cm (2 x 10/sup 8/ rads/second), 11.3 cm (1 x 10/sup 8/ rads/second), and 13.0 cm (5 x 10/sup 7/ rads/second) in a water phantom. It appears that a significant difference in effectiveness exists at these three depths as measured by the hatchability and hatching delay of the eggs. The effect at the 11.3- and 13-cm depths is 1.16 and 1.32 times greater than at the 2.3-cm depth. Experiments to determine the effect of dose rates ranging from 1 x 10/sup 7/ to 2 x 10/sup 8/ rads/second at the same depth demonstrated an apparent lower effectiveness of radiation exposure when delivered at extremely high dose rates. From the results of these experiments, it was concluded that the difference in biological effectiveness of 29-MeV electrons at various depths is the result of a dose-rate effect. (auth)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
