And a method of operating a time-of-flight mass spectrometer has a mass resolution is improved

摘要

, Discloses the time-of-flight mass spectrometer with no forcing a corresponding increase in device size, mass and improved resolution. The analyzer has a ionizer generates ions to be analyzed. Is directed to the ion flight path Seon thereof are aligned in the direction of the axis linear least some of their ions. Some of the ion path which is aligned with the direction of linear axis has an area with an electrostatic field substantially having the equipotential field lines of the non-linear about the axis of the straight line. The entering or in the electrostatic field substantially having a velocity component directed along the axis of the linear ion, so that once the ions are trapped in the electrostatic field are substantial, given the ion It is either a velocity or ingredients such. As a result of the combined effect of the electric field non-linear and the velocity components of the linear, in order to move simultaneously in the direction of the axis of the linear ion becomes shop around so multiply around the linear axis. Therefore, compared to the flight path to move only in a straight line ions along its axis, to move along the flight path very long. In one embodiment, along the field lines of equipotential about the axis of linear motion and simultaneous ion in the direction of the linear axis defines the trajectory of the ions substantially helical. It is substantially the same but are given a long distance that ions having different m / z are simultaneously separated, thereby, it can provide a device with a high resolution.