On this occasion, we employed the energy-rich gamma radiation of a radiothorium preparation. From Wordnik.com. [Walther Bothe - Nobel Lecture] Reference
Hahn's radiothorium and actinium salts also followed him to Emil Fischer's laboratory in Berlin. 30. From Wordnik.com. [Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna] Reference
Here he discovered radioactinium and conducted investigations with Rutherford on alpha-rays of radiothorium and radioactinium. From Wordnik.com. [Otto Hahn - Biography] Reference
His work here was rewarded by the discovery of a new radioactive substance, radiothorium, while working on the preparation of pure radium salts. From Wordnik.com. [Otto Hahn - Biography] Reference
Hahn had identified a new radioelement that emitted thorium emanation and which he labeled radiothorium. 28 Meanwhile, Soddy had moved to the Chemical Institute of University College in London to join Ramsay's research. From Wordnik.com. [Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna] Reference
With Ramsay's consent, Hahn had taken with him the radiothorium he separated from samples of barium chloride and the actinium that he and a collaborator had earlier proved to be identical to the new element that the German chemist Friedrich Giesel had named emanium. From Wordnik.com. [Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna] Reference
Many having other radio-elements are known already, the polonium, the mesothorium, the radiothorium, the actinium. From Wordnik.com. [On the Discovery of Radium] Reference
Other radioactive elements have been discovered since: actinium (Debierne), radiothorium and mesothorium (Hahn), ionium (Boltwood), etc. From Wordnik.com. [Radium And The New Concepts In Chemistry: Nobel Lecture] Reference
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