A re-examination is made of the radioisotopes which were classified as requiring isotopic separation in HW76323 and HW-78180, and four of the isotopes are identified as having advantages great enough to justify further consideration with or without isotopic purification. These promising isotopes are Cs/sup 134/, Ho/sup 166/, Tm/sup 170/, and Tl/sup 204/, a nd of these, Tl/sup 204/ is believed to be the most promising, if an effective separation process for this isotope can be achieved. (D.L.C.)
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: AT(45-1)-1350 NSA number: NSA-18-012519 OSTI Identifier 4115535 Research organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.