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.

Date of Patent:
Mar. 15, 2022

Filed:

Dec. 28, 2020
Applicant:

Perkinelmer Health Sciences, Inc., Waltham, MA (US);

Inventors:

David G. Welkie, Trumbull, CT (US);

Tong Chen, Shelton, CT (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 37/08 (2006.01); H01J 27/02 (2006.01); H01J 37/30 (2006.01);
U.S. Cl.
CPC ...
H01J 37/08 (2013.01); H01J 27/022 (2013.01); H01J 37/3002 (2013.01); H01J 2237/082 (2013.01);
Abstract

An ion source can include a magnetic field generator configured to generate a magnetic field in a direction parallel to a direction of the electron beam and coincident with the electron beam. However, this magnetic field can also influence the path of ionized sample constituents as they pass through and exit the ion source. An ion source can include an electric field generator to compensate for this effect. As an example, the electric field generator can be configured to generate an electric field within the ion source chamber, such that an additional force is imparted on the ionized sample constituents, opposite in direction and substantially equal in magnitude to the force imparted on the ionized sample constituents by the magnetic field.


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