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:
Jun. 29, 1976
Filed:
Apr. 15, 1975
Jens F Geerk, Schondorf, DT;
Varian Mat GmbH, Bremen, DT;
Abstract
A mass spectrometer, more particularly for simultaneously measuring beams of a number of species of ions, has a special homogeneous magnetic sector field, the exit boundary of said field forming a straight line which extends through the point of intersection between the central ray of the incident object-ray pencil of ions and the straight entrance boundary of the sector field, and at least one of the emergent image-ray pencils of ions undergoing second-order directional focusing. In this spectrometer, the lateral magnification V lies in the range O .ltoreq. V .ltoreq. 1, the angle of deflection .phi. in the sector field is between 70.5.degree. and 131.8.degree., the angle .epsilon..sub.1 between the central ray of the incident object-ray pencil and the perpendicular erected at the point of intersection between the central ray and the entrance boundary is between 0.degree. and 90.degree., the distance 1.sub.1 between the object point of the ion source and the point of intersection between the central ray of the object-ray pencil and the straight entrance boundary of the sector field is between 0 and infinity, and the distance 1.sub.2 between the image point of the ion source and the point of intersection between the central ray of the second-order directionally-focused image-beam pencil and the straight exit boundary of the sector field is between 0.236 and 0.943.