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THE RELATIVE BIOLOGICAL EFFECTIVENESS OF COBALT-60 GAMMA RAYS AND 220-Kvp X- RAYS ON THE VIABILITY OF CHICKEN EGGS

Journal Article · · Radiation Research
DOI:https://doi.org/10.2307/3570702· OSTI ID:4176862
The relative bioloical effectiveness of cobalt-60 gamma rays and 220- kvp x rays on the viabtlity of fertile chicken eggs has been determined. The RBE with 95% cofnidence interval was found to be 0.82 plus or minus 0.06 when the absorbed dose was measured at the position of the embryo. On the basis of absorbed dose rate determined at the center of the egg, the RBE was found to be 0.80 plus or minus 0.06. The relative biological effectiveness was found to be independent of dosage in the range from 330 to 1030 rads. The LD/sub 50/'s for cobalt-60 gamma rays and 220-kvp x rays were found to be 705 plus or minus 21 and 583 plus or minus 17 rads, respectively. These values were determined from measurements of absorbed dose at the position of the embryo. (auth)
Research Organization:
Univ. of Minnesota, Minneapolis
Sponsoring Organization:
USDOE
NSA Number:
NSA-14-007262
OSTI ID:
4176862
Journal Information:
Radiation Research, Journal Name: Radiation Research Vol. Vol: 12
Country of Publication:
Country unknown/Code not available
Language:
English