طراحي و ساخت يك طيف سنج جرمي چهار قطبي

A quadrupole mass spectrometer was designed and fabricated and tested experimentally. This mass spectrometer which is made for the first time in Iran, works only with electric field and does not need magnetic field. This mass spectrometer is capable of separating molecules of mass between 2 and 70 mass units. The experimental results are repeatable. The sensitivity of the device is about 0.3 miu A/Torr in the pressure of 10-4 Torr and has the resolving power of 1.4 mass unit. This mass spectrometer can be used to study the residual gas in a vacuum chamber in research works.