Cartridge-type vacuum lock for a thermal-ionization mass spectrometer. Rapid determination of relative isotopic ratios of potassium

Abstract

The results of the study are presented as decontamination factors calculated from peak height ratios in Table I. The spectra from which the peak heights were estimated are presented in Figure 1. It is concluded that the method provides excellent separation of zirconium and niobium from each other and from many other elements which would be found in fission product mixtures.Although it has not been demonstrated, it is thought that ignited niobium phosphate, when precipitated from an excess of phosphate, would make a good weighing form for the determination of recovery (4).

Mass spectrometry

“…The phenomenon of contact ionization, which occurs when an atom is ionized at the contact of a hot surface, has been reviewed (1448). A cartridge-type vacuum lock has been described for a thermal-ionization mass spectrometer, and utilized for the rapid determination of relative isotopic ratios of potassium (1449). Ion formation in the thermal surface ionization of rareearth elements has been studied by mass spectrometry (1450).…”