Differentially pumped ion trap mass spectrometer

Details Differentially pumped ion trap mass spectrometer Differentially pumped ion trap mass spectrometer

1992-09-23

1993-12-07

Berman, Jack I.

Radiant energy

Ionic separation or analysis

With evacuation or sealing means

250292, 250291, 250290, H01J 4924, H01J 4942

Patent

active

052685721

ABSTRACT:
An ion trap mass spectrometer includes an ion trap region separated from an electron multiplier region by a baffle, and separate turbomolecular pumps for pumping each region to a different pressure level. The ion trap region can therefore be pumped to a higher pressure level than ca be used for the electron multiplier region, and the result and increase in pressure of damping gas in the ion trap region increases the sensitivity of the device.

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"Electrospray Ionization Combined with Ion Trap Mass Spectrometry" Analytical Chemistry, vol. 62, No. 13, Jul. 1, 1990 pp. 1284-1295 Berkel et al.
"Ion Spray Liquid Chromatography/Ion Trap Mass Spectrometry Determination of Biomolecules" McLuckey et al., Analytical Chemistry, vol. 63, No. 4, Feb. 15, 1991, pp. 375-383.

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