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alpha-ray vacuum gage |
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alpha-ray vacuum gage [′al·fə ‚rā ′vak·yüm ‚gāj] (engineering) An ionization gage in which the ionization is produced by alpha particles emitted by a radioactive source, instead of by electrons emitted from a hot filament; used chiefly for pressures from 10−3to 10 torrs. Also known as alphatron. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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