High dynamic range mass spectrometer

Details High dynamic range mass spectrometer High dynamic range mass spectrometer

2005-11-29

2005-11-29

Lee, John R. (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S287000, C250S286000, C250S397000, C250S309000, C250S394000

Reexamination Certificate

active

06969847

ABSTRACT:
A mass spectrometer comprises an ion source which produces an ion beam from a substance to be analysed and a detector to detect a quantity of ions incident thereon. The detector includes two elements (16, 18) each of which detect a part of the quantity of ions and an attenuation device attenuates the quantity of ions reaching one of the detector elements. At least one of the detector elements (16, 18) is connected to a time to digital converter (TDC) to allow counting of the ions and at least one of the detector elements is connected in parallel to both a time to digital converter (TDC) and an analogue to digital converter (ADC).

REFERENCES:
patent: 6864479 (2005-03-01), Davis et al.

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