Canal rays

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Channel rays is a historical name for positively charged ion radiation .

Channel rays got their name from the first method of their generation: The ions generated by an electric field in a dilute gas and accelerated towards the cathode provided with holes pass through these holes ("channels") due to their inertia and can be viewed behind the cathode their luminous phenomena can be demonstrated. This device that emits canal rays is also called a Geissler tube . It is an ion source .

The canal rays were discovered by Eugen Goldstein in 1886 .

literature

  • Eugen Goldstein: Canal rays . Reprint of the orig. Leipzig, [Akad. Verl.-Ges.], 1930. Severus-Verl., Hamburg 2010, ISBN 978-3-942382-08-3 .