设计了一种新型的铯原子束检测器,于1982年春研制成功。与国内原有的检测器比较,它有两个明显的优点:第一,成功地设计了质谱器,既滤除了杂质离子,又保持了高的铯离子流通率,因而提高了信噪比;第二,由于原子、离子和电子运动轨迹的合理安排,使整个检测器的体积很小,适用于小型化的铯束管。文章结尾处,还提供了美国FTS铯束管的检测器的比较数据。 A new cesium atomic beam detector was designed and developed successfully in the spring of 1982. Compared with the original detector in China, it has two obvious advantages: First, the mass spectrometer has been successfully designed to filter out impurity ions and maintain a high cesium ion circulation rate, thus improving the signal-to-noise ratio; Second, due to the reasonable arrangement of the trajectories of atoms, ions and electrons, the whole detector is small in size and suitable for miniaturized cesium beam tubes. At the end of the article, comparative data is also provided for the detector of the FTS cesium tube in the United States.