| 单词 | ionization gauge |
| 释义 | > as lemmasionization gauge ionization gauge n. Physics an instrument for measuring very low gas pressures by ionizing the gas and measuring the resulting ionization current; cf. Penning gauge n. at Penning n.3 1. ΘΚΠ the world > matter > physics > atomic physics > ion > ionization > [noun] > measuring instrument ionization gauge1918 ion gauge1938 alphatron1946 1918 Physical Rev. 12 71 Buckley has devised an ionization gauge in which the residual gas is ionized by electrons given off by an incandescent filament accelerated by a potential of about 200 volts. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VII. 253/2 In another type of ionization gage, the gas is ionized by high-energy alpha particles emitted by a radioactive source such as radium. 2006 Philos. Trans. (Royal Soc.) A. 364 2935 The number densities of the gases in the trap are measured by a calibrated ionization gauge. < as lemmas |
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