本文叙述了一种最近研制的、原子频标用的改进型铯束管的设计与试制,并给出了性能数据资料。该管取消了通常的铯束管中基本上都具有的真空离子泵和电子倍增器,在整个系统工作中只用低压电源。同轴对中的新结构有助于简化制造工艺。通过调节铯束的对中机构,管子在500赫谐振线宽时,所取得的优值系数为2。 This article describes a recently developed, atomic frequency standard for the improved cesium beam tube design and trial production, and gives the performance data. The tube cancels the vacuum ion pump and electron multiplier, which are typically found in the usual cesium beam tubes, and uses only low voltage power throughout the system. The new structure in coaxial alignment helps to simplify the manufacturing process. By adjusting the cesium beam alignment mechanism, the tube at 500 Hz resonance line width, obtained by the merit coefficient of 2.