Rapid Chemical Separations

Fast Separation in the Gaseous Phase of Te and I Recoil Products Produced by Cf-252

“…A selective separation of iodine is also possible using inert gas. In the literature other methods are described for a fast separation of fission halogenes [8,13,49], but a transportation in the elemental form or as JC1 is quite simple and gives yields between 60°/ 0 and 90°/ 0 . Principally it should be possible to measure charge dispersion curves.…”

15 Fission Fragment Mass, Charge and Energy Distributions

“…Later, many fast radiochemical separations and ingenious automatic chemical separation methods were developed [59][60][61] and were applied to the determination of independent fission yields [9]. Since not many new developments have taken place since, a discussion of this topic will not be repeated here.…”

Mass Separation for Nuclear Reaction Studies

“…See Figure 11 for a comparison with the ot her techniques. Short half-lives and diJfusion.-Diffusion as a means of quick separation of nuclear reaction products from a target is discussed extensively by Herrmann & Denschlag (52). The diffusion of alkali elements is readily studied by using the online mass-spectrometer setup in a pulsed accelerator, and typical ex perimental results are shown in Figure 8.…”

“…This result is understood in terms of the mathematical theory of diffusion (27,51) and is used to calculate the loss by radioactive decay during diffu sion. While a correction is usually applied for isotopes of half-lives Tp::; 2 sec, there is no "delay" before diffusion and owing to the fast initial diffusion, a sizable proportion of an isotope of 10 msec half-life can be recorded (52). This can be applied to the search for new isotopes as no fJ radioactive isotopes are shorter lived.…”