Section II. On-line separator systems and target techniques
Use of refractory oxides, carbides and borides as targets for on-line mass separation

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Abstract

Ion beams of a number of elements have been produced at the CERN-ISOLDE facility by 600-MeV proton bombardment of thick targets consisting of a variety of metal oxides, carbides and borides. The nuclear reaction products are released from the target material at high temperature and continuously transferred to the ion source of the ISOLDE on-line mass separator. The materials studied are CaB6, ScC2, LaC2, TaC, ThC2, UC2, MgO, CaO, BaO, and ThO2. The obtained beam intensities are of the elements He, C, N, Ne, Mg, Al, Cl, Ar, Ca, Br, Kr, I, Xe, Ba, At, Rn. The intensities are high enough to facilitate the study of hitherto unknown nuclei.

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