Float collision cell

The technique consists of introducing a gas into the collision cell as a molecular beam directed perpendicularly to the ion beam accelerated by a potential of a few kilovolts towards an outlet where a pump removes it from the instrument so as to preserve a vacuum compatible with the use of electromagnetic analysers. This collision cell is located at a focal point to avoid losses. It is better to float the collision cell electrically to distinguish the metastable from the CID products. 

Select the precursor ions by EBE mass spectrometer and introduce them into the collision cell floated at 3600 V. The kinetic energy of the ions with charge z is 400 zeV. 

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