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. 10, 2000
Filed:
Feb. 27, 1998
Frank H Laukien, Lincoln, MA (US);
Melvin A Park, Nashua, NH (US);
Bruker Daltonics, Inc., Billerica, MA (US);
Abstract
The present invention relates to a means and method for decreasing the energy distribution of ions produced from solid or liquid samples by pulsed desorption method. More particularly, the present invention discloses a method wherein the kinetic energies of ions are related to their locations at a given time after the excitation event which caused their desorption. Based on this relationship between ion position and energy, an accelerating electric field is applied at a predetermined time after the excitation event. The magnitude of the applied electric field and the time of its application are such that the kinetic energy distribution of the ions is substantially reduced or eliminated.