An investigation of aluminum alloy 6061 heat treatment and its effect on iodine absorption in Nordion gas targets
- Nordion International, Inc., British Columbia (Canada)
The yield of I-123 from gas targets used by Nordion has been noted to vary from target to target given identical irradiation conditions and target geometries. It is suggested that changes in the microstructure occurring during welding of the aluminum 6061-T6 alloy used to make the target, may have an effect on the yield. Various samples of aluminum 6061 were heat treated to the TO, T4 and T6 conditions. The surface microstructure of representative samples were compared, including the machined surface finish as well as the grain structure of the sample. These samples were immersed in a sodium iodide solution labelled with I-123 under similar conditions as that found in the gas target during a production run. The samples were then rinsed and counted for activity remaining on their surface.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- OSTI ID:
- 41865
- Report Number(s):
- BNL--61149; CONF-9309170--; ON: DE95006634
- Country of Publication:
- United States
- Language:
- English
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