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The new cobalt-6Q source, which is now being designed, will allow f o r a variety of tests Xithin the radiation field, and will be designed t o accommodate low tw era ture and vacuum equipment. the purchase of ansthihg beyond the facility itself this year. studies which are of most interest tothe nuclear rocket programs, we will need the high vacuum and low temperature facilities to go along with the cobalt From our discussions with you, we would estimate the cost at between $50,000 We have not budgeted f o r We would propose that you lend these to us or finance their procurement. The work could be greatly accelerated if, i n addition tothe eauipment, the space program would support two men an this work. polymer group f r o m three t o five mtm. . The additional men could code from another Division, and will be available in a few weeks. i n working with nuclear radiation. This would iracrease our These men will be experienced The cost f o r supporting two men would be Tentatively, we would propose studying the following materials: polyethylene, polystyrene, porn thy1 methacrylate, flu or hated ethylene polymer, natural rubber, but a correlation would be made between the effects of gama radiation and the mixed radiation of a reactor. Most of their radiations would be made inthe CO-60 source, The dynamic measurements t o be made while inthe radiation Source would \ depend t o some extent on t h e material being studied, but would probably be one properties such as molecular weight and chemical structure. elastic modulust internal friction,stress relaxation, o r Post - irradiation measurements would a130 be made to establish certain basic Very truly yours, i Solid State Division