“ionization gauge”的概念、定义、翻译、参考文献-科学参考

ionization gauge

Physics

A vacuum gauge consisting of a three-electrode system inserted into the container in which the pressure is to be measured. Electrons from the cathode are attracted to the grid, which is positively biased. Some pass through the grid but do not reach the anode, as it is maintained at a negative potential. Some of these electrons do, however, collide with gas molecules, ionizing them and converting them to positive ions. These ions are attracted to the anode; the resulting anode current can be used as a measure of the number of gas molecules present. Pressure as low as 10⁻⁶ pascal can be measured in this way.

Chemistry

A vacuum gauge consisting of a three-electrode system inserted into the container in which the pressure is to be measured. Electrons from the cathode are attracted to the grid, which is positively biased. Some pass through the grid but do not reach the anode, as it is maintained at a negative potential. Some of these electrons do, however, collide with gas molecules, ionizing them and converting them to positive ions. These ions are attracted to the anode; the resulting anode current can be used as a measure of the number of gas molecules present. Pressure as low as 10⁻⁶ pascal can be measured in this way.

Electronics and Electrical Engineering

A pressure gauge that is used to measure extremely low gas pressures and consists of a high-vacuum three-electrode thermionic valve fused to the gas system (see diagram). Electrons leaving the cathode are accelerated to the grid but fail to reach the anode because of its negative potential. Any gas molecules in the system are ionized by collision with some of the electrons that pass through the grid; the positive ions thus formed migrate to the anode producing an output current that is a function of the number of gas molecules present and hence of the gas pressure.
Ionization gauge

单词	ionization gauge
释义	ionization gauge Physics A vacuum gauge consisting of a three-electrode system inserted into the container in which the pressure is to be measured. Electrons from the cathode are attracted to the grid, which is positively biased. Some pass through the grid but do not reach the anode, as it is maintained at a negative potential. Some of these electrons do, however, collide with gas molecules, ionizing them and converting them to positive ions. These ions are attracted to the anode; the resulting anode current can be used as a measure of the number of gas molecules present. Pressure as low as 10⁻⁶ pascal can be measured in this way. Chemistry A vacuum gauge consisting of a three-electrode system inserted into the container in which the pressure is to be measured. Electrons from the cathode are attracted to the grid, which is positively biased. Some pass through the grid but do not reach the anode, as it is maintained at a negative potential. Some of these electrons do, however, collide with gas molecules, ionizing them and converting them to positive ions. These ions are attracted to the anode; the resulting anode current can be used as a measure of the number of gas molecules present. Pressure as low as 10⁻⁶ pascal can be measured in this way. Electronics and Electrical Engineering A pressure gauge that is used to measure extremely low gas pressures and consists of a high-vacuum three-electrode thermionic valve fused to the gas system (see diagram). Electrons leaving the cathode are accelerated to the grid but fail to reach the anode because of its negative potential. Any gas molecules in the system are ionized by collision with some of the electrons that pass through the grid; the positive ions thus formed migrate to the anode producing an output current that is a function of the number of gas molecules present and hence of the gas pressure. Ionization gauge
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