Kratos Analytical Limited

Scientific Apparatus Limited

Sydney Evans

Stephen C Davis

Leonard J Rutherford

A mass spectrometry system comprises a source of ions for analysis, an ion storage device for separating the source ions as a function of their different mass-to-charge ratios, means for dissociating the separated source ions in order to generate daughter ions and an ion mirror for analyzing the daughter ions as a function of the mass-to-charge ratios. The mass spectrometry system has particular utility in the analysis of large molecules contained in biological and biochemical samples.

Mass spectrometry systems

In the magnetic analyzer of a mass spectrometer in which a beam of ions travels from an entry slit to a collector slit, the field strength of the electromagnet can be increased by reducing the flux gap. In order however to avoid impingement of ions against the wall portions of the spectrometer tube in the reduced flux gap without reducing the width of the beam, collimating means are provided at opposite ends of the wall portions in the gap, the opposite walls of the collimating means extending from the tube wall portions up to the beam to intercept ions which otherwise would enter the collector slit directly or after reflection from the wall portions.

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Sale, United Kingdom

Sydney Evans