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:
Jan. 19, 1993
Filed:
Jan. 25, 1991
Hans-Jorg Laue, Bremen, DE;
Finnigan Mat GmbH, Bremen, DE;
Abstract
The invention relates to a method and a mass spectrometer for mass spectroscopic or mass spectrometric investigation of particles. The particles are separated in a separating system in accordance with their different masses. In order to reduce detection errors due to scattered particles, there is arranged upstream of a detecting device a correction device which builds up a braking potential in order to suppress particles having an energy loss due to scattering. The invention provides a further, preferably combined correction, by means of which the particles are selected as a function of their direction of motion. For this purpose, the mass spectrometer according to the invention preferably has at least one braking electrode and one quadrupole lens.