公开(公告)号：US3835318A

公开(公告)日：1974-09-10

申请号：US35712673

申请日：1973-05-04

Applicant: NASA

Inventor： FLETCHER J ,  YEAGER P ,  GAETANO G ,  HUGHES D

IPC: H01J49/02 ,  H01J39/34

CPC classification number: H01J49/022

Abstract: A high-speed scan device that allows most any scanning sector mass spectrometer to measure preselected gases at a very high sampling rate. The device generates a rapidly changing staircase output which is applied to the accelerator of the spectrometer and it also generates defocusing pulses that are applied to one of the deflecting plates of the spectrometer which when shorted to ground deflects the ion beam away from the collector. A defocusing pulse occurs each time there is a change in the staircase output.

Abstract translation: 一种高速扫描装置，允许大多数扫描扇区质谱仪以非常高的采样速率测量预选气体。 该装置产生快速变化的阶梯输出，其被施加到光谱仪的加速器，并且还产生散焦脉冲，该散焦脉冲施加到光谱仪的偏转板之一，当与地面短路时，将离子束偏离收集器。 每次楼梯输出发生变化时都会发生散焦脉冲。