Usage examples (8)

• On this occasion, we employed the energy-rich gamma radiation of a radiothorium preparation.
• Hahn's radiothorium and actinium salts also followed him to Emil Fischer's laboratory in Berlin. 30
• Here he discovered radioactinium and conducted investigations with Rutherford on alpha-rays of radiothorium and radioactinium.
• His work here was rewarded by the discovery of a new radioactive substance, radiothorium, while working on the preparation of pure radium salts.