The total ionisation of various gases by the α-Rays of Uranium

The first experiments on the total relative ionisation produced by the Becquerel rays from uranium oxide were made by Prof. Rutherford. With a brass ball of 1·1-cm. radius coated with uranium oxide placed inside a metal coated bell-jar of 6·5-cm. radius for containing the gases, the ball being conne...

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Bibliographic Details
Published in:Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character
Format: Article in Journal/Newspaper
Language:English
Published: The Royal Society 1907
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Online Access:http://dx.doi.org/10.1098/rspa.1907.0033
https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.1907.0033
Description
Summary:The first experiments on the total relative ionisation produced by the Becquerel rays from uranium oxide were made by Prof. Rutherford. With a brass ball of 1·1-cm. radius coated with uranium oxide placed inside a metal coated bell-jar of 6·5-cm. radius for containing the gases, the ball being connected to an electrometer and the bell-jar raised to a potential of 800 volts, he found the following values for the total ionisation :— Air ≡ 100, hydrogen 95, oxygen 106, carbonic acid 96, coal gas 111, hydrochloric acid gas 102, ammonia 101.