IMPROVED TOF QUALITATIVE MEASURES USING A MULTICHANNEL DETECTOR

The resolution of a TOF mass analyzer is maintained despite a loss of resolution in one or more channels of a multichannel ion detection system by selecting the highest resolution channels for qualitative analysis. Ion packets that impact a multichannel detector are converted into multiplied electrons and emitted from two or more segmented electrodes that correspond to impacts in different regions across a length of the detector. The electrons received by each electrode of the two or more segmented electrodes for each ion packet are converted into digital values in a channel of a multichannel digitizer, producing digital values for at least two or more channels. Qualitative information about the ion packets is calculated using digital values of a predetermined subset of one or more channels of the at least two or more channels known to provide the highest resolution. 保持TOF质量分析器的分辨率，尽管通过选择最高分辨率通道用于定性分析使多通道离子检测系统的一个或多个通道中的分辨率有所损失。撞击多通道检测器的离子包被转换成倍增电子，并从两个或更多个分段电极发射，两个或更多个分段电极对应于跨检测器长度的不同区域中的撞击。针对每个离子包，两个或更多个分段电