Zur Trennung der Chlorisotope

Quantitative Isotopenanreicherung im Thermodiffusionstrennrohr / Quantitative Isotope Enrichment in Thermal Diffusion Separation Column

“…Die Entwicklung des Thermodiffusionstrennrohres durch Clusius und Dickel [1,2] 1938 führte zu einem bedeutenden Fortschritt bei der Isotopentrennung. In den letzten Jahren wurde das Problem der quantitativen Anreicherung, besonders in bezug auf die Anreicherung von 14 C zur Erweiterung der Grenzen der 14 C-Altersbestimmung, von verschiedenen Autoren [3 -13] wieder aufgenommen.…”

A memorandum that changed the world

“…Frisch was familiar with a method that had been invented in 1938 in Germany by the German physical chemist Klaus Clusius and his younger colleague Gerhard Dickel. 9 In essence the separation apparatus consists of a vertical tube with a wire down the middle that can be heated. If a gas with different isotopes is introduced, the lighter isotope concentrates at the heated element and accumulates at the top, while the heavy element, as a kind of countercurrent, accumulates at the bottom.…”

Study of the thermal diffusion behavior of simple binary mixtures

“…In some cases, even qualitative predictions, which are of practical importance, are impossible. The main practical applications are separation processes [145,29] such as thermal field flow fractionation of polymers and colloids or isotope separation, characterization of geochemical processes [66,30] and combustion [128].…”

“…The main practical applications are separation processes [145,29] such as thermal field flow fractionation of polymers and colloids or isotope separation, characterization of geochemical processes [66,30] and combustion [128]. Although the discovery of the effect by Ludwig [89] dates back 150 years, even qualitative predictions for liquids, which are of practical importance, are often difficult.…”

“…The technical applications are isotope separation of liquids and gaseous mixtures [122], thermal field flow fractionation of polymers and colloids [145,29], identification and separation of crude oil components [30], coating of metallic items, etc. This phenomenon is supposed to play an important role in crystal growth [136] and combustion [128].…”