Letter | Published:

Electrometer Triode in the X-ray Ionisation Spectrometer

Nature volume 131, page 546 (15 April 1933) | Download Citation

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Abstract

IN nature of February 25, Mr. J. A. C. Teegan proposed to apply the ‘electrometer valve’ now produced commercially by the G.E.C. to an X-ray ionisation spectrometer for the amplification of ionisation currents. It may interest him to know that such a valve has been in use for this purpose in this Laboratory for the past eighteen months with success, using a circuit identical in all essentials with that which he describes.

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  1. Davy-Faraday Laboratory, Royal Institution, London. Feb. 27.

    • B. W. ROBINSON

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DOI

https://doi.org/10.1038/131546a0

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