1. A new ion source for electromagnetic isotope separators
2. Proc. Int. Ion source Conf.;Freeman,1969
3. also AERE, Harwell, Report R-6138.
4. Proc. Inst. Mass spectrometry Conf.;Freeman,1969
5. also AERE, Harwell, Report R-6254; see also ref. 22, ch. 4.