抄録
A new type of multi-turn time-of-flight (TOF) mass spectrometer was constructed, consisting of four cylindrical electric sectors and 28 electric quadrupole lenses, the size of the vacuum chamber being 60 cm×70 cm×20 cm. As the mass resolution of a TOF mass spectrometer is proportional to the path length, it will be necessary to use multi-turn optics in order to achieve the desired resolution within the physical limitations imposed by the spacecraft. It was demonstrated that the mass resolution can be increased according to the number of cycles of the ions through the ion optical system. The mass resolution was 68,000 (m/z= 28, FWHM) after 150.5 cycles.
