单词 | ionization chamber |
释义 | > as lemmasionization chamber ionization chamber n. Physics an instrument for measuring the intensity of ionizing radiation by collecting and measuring the charge on the ions which the radiation produces in a medium, typically a volume of gas. ΘΚΠ the world > matter > physics > atomic nucleus > radioactivity > ionizing radiation > [noun] > measuring instrument ionization chamber1904 ion chamber1922 spark counter1935 spark chamber1961 1904 London, Edinb., & Dublin Philos. Mag. 6th Ser. 8 721 In Rutherford's experiment..the radioactive material was scattered over the floor of the ionization chamber. 1945 Electronic Engin. 17 405 These experiments were carried out by means of ionisation chambers, like most of the early investigations on cosmic rays. 2006 R. A. Powsner & E. R. Powsner Essent. Nucl. Med. Physics (ed. 2) iv. 44/1 The lower limit of sensitivity for an ionization chamber is determined by the sensitivity of the meter used to measure the current. < as lemmas |
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