Ionisation- The gaseous atoms are ionised by knocking one or more electrons off using an electron gun to give a positive ion.
Acceleration-The positive ions are accelerated by an electric field and focused by passing through a series of slits.
Deflection- The fast moving beam of electrons are deflected by a strong electromagnet. The magnitude of deflection depends on the mass:charge ratio. If m/z is small, the deflection is large.
Detection- The ion hits the detector and accepts an electron from the detector which creates a small current. This current is amplified and produces a signal on a computer.
Comments
No comments have yet been made