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单词 betatron
释义

betatronn.

Brit. /ˈbiːtətrɒn/, U.S. /ˈbeɪdəˌtrɑn/
Etymology: < beta n. + -tron suffix.
A machine designed for the acceleration of β particles. Kerst first spoke of the machine (1940) as an ‘Induction Accelerator’.
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induction accelerator1940
betatron1941
1941 Time 29 Dec. 44/3 A new electron-hurling machine..its brilliant young inventor, Donald William Kerst, 30, who calls the machine a ‘betatron’.
1941 Time 29 Dec. 44/3 ‘The heart of the betatron,’ explains Inventor Kerst, ‘is a doughnut-shaped glass vacuum tube between the poles of a large electro~magnet.’
1942 D. W. Kerst in Rev. Sci. Instruments 13 387 (title) A 20-Million Electron-Volt Betatron or Induction Accelerator.
1960 Gloss. Atomic Terms (H.M.S.O.) 6 Betatron, a machine for accelerating a continuous beam of electrons to high speeds in a circular path by means of the electric field produced by a changing magnetic flux.
This entry has not yet been fully updated (first published 1972; most recently modified version published online December 2021).
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n.1941
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更新时间:2025/1/11 13:39:54