ZhT-1301型质谱计的磁扫描装置只能进行单方向(我们定义这个方向为正向)的扫描,这对需要通过质谱图形取得数据的分析工作带来一定的困难。在这些分析工作中,一则由于样品离化的不稳定和离子流放大器反应时间较长,使大峰拖尾影响小峰,二则由于其它不稳定因素使谱峰不稳定,这都造成质谱峰高度测不准。如果磁扫描装置能够提供正、反两 ZhT-1301-type magnetic spectrometer magnetic scanning device can only be unidirectional (we define the direction of the positive) of the scan, which requires the data obtained by the mass spectrometry data analysis to bring some difficulties. In these analyzes, one was due to the instability of the sample ionization and the longer reaction time of the ion current amplifier, which caused large peak tailing to affect the small peak and 2 due to other instability factors, which caused the peak height of the mass spectrum Not accurate If the magnetic scanning device can provide positive and negative two