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经过最近的工作,我们对弹道规的性能有了较深刻的理解,并且对这种规管作出了重大的改进。灯丝和中央场之间的耦合是控制线性、灵敏度和振荡的一个主要因素。从灯丝上发射出正离子、能量过大的电子到达离子收集极以及X-射线光电流,是在低压强下引起误差的一些因素。现在的这种设计是非常简单的,在规管内部,干扰压强测量的结构比较少。规管的灵敏度提高为原来的四倍,所以,为了产生 B-A规在8mA发射电流的条件下所得到的离子流,现在只需要1uA的电子流。此规管的输入总功率小于100mW。在10-11乇-10-5乇范围内,离子流与压强的关系是近似线性的。在非弹道型的工作条件下,线性区域可延展到10-2乇。
After recent work, we have gained a deeper understanding of the performance of ballistic gauges and have made significant improvements to this regulation. The coupling between the filament and the central field is a major factor in controlling linearity, sensitivity and oscillation. Emission of positive ions from the filament, excessive energy of the electrons reaching the ion collector and the X-ray photocurrent are some of the factors that cause errors at low pressure. This design is very simple now, in the regulation of internal interference pressure measurement structure is relatively small. Regulatory sensitivity is quadrupled, so that only 1uA of electron flow is now required to generate the ion stream that the B-A emits at a current of 8mA. The regulated total input power is less than 100mW. The ion current-pressure relationship is approximately linear over a range of 10-11 torr to 10-5 torr. Under non-ballistic operating conditions, the linear zone can be extended to 10-2 Torr.