Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1986-08-18
1988-04-12
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156628, 156643, 156644, 156651, 156655, 2504921, 2505181, B44C 122, C03C 1500, C03C 2506
Patent
active
047372346
ABSTRACT:
A method and apparatus are described for producing a high fluence neutron dosimeter which serves as a permanent record for fission rate measurement. An alpha-emitting source which is a radioactive parent of the daughter isotope of interest is used to implant recoil ions resulting from alpha decay into a substrate such as a mica solid state track recorder. The source and the mica solid state track recorder are arranged in spaced, opposing relation in an assembly housed in a vacuum. For example, a .sup.241 Am source in thin layer form can be placed next to the mica solid state track recorder. Each alpha decay of .sup.241 Am results in a .sup.237 Np ion with enough recoil energy to be implanted in the solid state track recorder. An ion-implanted mica solid state track recorder so produced is then exposed to neutrons, etched, and both the induced fission tracks and recoil ion tracks are counted. As a result, the fission rate in fissions per atom can be calculated.
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Abeles D. C.
Powell William A.
Westinghouse Electric Corp.
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