The preparation of 235UIr2 targets for use in g-factor measurements of fission isomers

Abstract The cubic, nonparamagnetic alloy, 235 UIr 2 , was found to be a good host for the preservation of nuclear alignment in the g -factor measurement of the τ = 122(10) ns fission isomer of 237 Pu. This paper discusses, in detail, the preparation of the thin-film targets used in this measurement. These techniques were found to apply to other similar actinide alloys such as NpRu 2 .