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:
Oct. 02, 2007
Filed:
Mar. 24, 2005
Gerhard Weiss, Weyhe, DE;
Gerhard Weiss, Weyhe, DE;
Bruker Daltonik GmbH, Bremen, DE;
Abstract
The invention relates to a method for damping the kinetic energy of ions in ion cells filled with collision gas and with an exit aperture to drain the ions out of the cell. The invention uses a conditioning cell with an adjustable DC potential which decreases towards the exit aperture to compress the phase volume of the ions by damping their kinetic energies, collecting the ions after thermalization in the spatial potential minimum thus created and letting them drain away relatively slowly through a central potential minimum in the exit aperture system. This facilitates the production of very fine, highly parallel ion beams which consist of almost monoenergetic ions. In particular, the method can also be coupled with a fragmentation of the ions.