How Mass.S works

How Mass.S works

1. 1) Sample is heated if not already a gas its vapourised

2. 2) IONISATION

   • Gaseous atoms are bombarded by electrons from gun
   • knocking e- out of the atom making a +ve ion

3. 3) ACCELERATION

   • +ve ions attracted to -ve charged electrical plates
   • ions are charged and accelerated by attractive forse of electric field

4. 4) DEFLECTION

   • charged particles deflected by magnetic field
   • faster/heavier/less charged ions= small deflection

5. 5)DETECTION

   • each ion takes different path due to deflection
   • detected when +ve ions hit -ve plate
   • Causes a current
   • is amplified and sent to computer