DEPTH-DOSIMETRY BY MEANS OF A GEL-INCORPORATED CHEMICAL SYSTEM
A technique is described for depth-dose measurements in tissue- equivalent materiai irradiated with low energy x rays. A cylinder of tissue- equivalent wax (Mix D), simulating a dog's body, was bored at a right single to its longitudinal axis to accommodate a firm aqueous gel plug containing trichloroethylene and bromocresol purple. This system was irradiated under both stationary and rotating conditions; the gel plug was removed and sliced for analysis. The change in H/sup +/ concentration, at various depths, due to irradiation decomposition of the trichloroethylene was determined through measurements of associated change in optical density of the bromocresol purple. These changes were related to energy absorbed. In the region of investigation the GM = 135 +PP 6. The midline dose was established as (3.3 plus or minus 0.31)% of the free air dose for the rotated phantom. (auth)
- Research Organization:
- Naval Radiological Defense Lab., San Francisco
- NSA Number:
- NSA-12-013325
- OSTI ID:
- 4326580
- Report Number(s):
- USNRDL-TR-244
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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