The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2018
Filed:
Nov. 09, 2016
Bruker Daltonics, Inc., Billerica, MA (US);
Melvin Andrew Park, Billerica, MA (US);
Other;
Abstract
The invention relates to the linear dynamic range of ion abundance measurement devices in mass spectrometers, such as time-of-flight mass spectrometers. The invention solves the problem of ion current peak saturation by producing a second ion measurement signal at an intermediate stage of amplification in a secondary electron multiplier, e.g. a signal generated between the two multichannel plates in chevron arrangement. Because saturation effects are observed only in later stages of amplification, the signal from the intermediate stage of amplification will remain linear even at high ion intensities and will remain outside saturation. In the case of a discrete dynode detector this could encompass, for example, placement of a detection grid between two dynodes near the middle of the amplification chain. The invention uses detection of the image current generated by the passing electrons.