Automatic cleaning of ion sources

Details Automatic cleaning of ion sources Automatic cleaning of ion sources

2006-11-13

2009-06-02

Souw, Bernard E (Department: 2881)

Radiant energy

Ion generation

Field ionization type

C250S492210, C250S492300, C315S111210, C315S111810, C204S192300, C204S192340, C134S001100, C216S067000

Reexamination Certificate

active

07541597

ABSTRACT:
The invention relates to the automatic cleaning of ion sources inside mass spectrometers, especially the cleaning of ion sources where the ions are generated by matrix-assisted laser desorption (MALDI).The invention consists in cleaning the electrodes of the ion source, which are contaminated with organic material, in the mass spectrometer itself by etching with reactive ions produced by an electrically generated gas discharge in a specially admitted reactant gas.

REFERENCES:
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patent: 4434038 (1984-02-01), Morrison, Jr.
patent: 4873445 (1989-10-01), Le Jeune
patent: 6464891 (2002-10-01), Druz et al.
patent: 2004/0163673 (2004-08-01), Holle et al.
patent: 2006/0086376 (2006-04-01), Dimeo et al.
patent: 2007/0114438 (2007-05-01), Holle et al.

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