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. 15, 2004
Filed:
Aug. 21, 2001
Applicant:
Inventor:
R. Kenneth Marcus, Clemson, SC (US);
Assignee:
Clemson University, Clemson, SC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 4/904 ;
U.S. Cl.
CPC ...
H01J 4/904 ;
Abstract
The apparatus and methods employ momentum separation to implement a particle beam (PB) sampling scheme for the introduction of particulate matter into low pressure (e.g., glow discharge) plasma sources for subsequent atomic emission and mass spectrometry chemical analysis in real time, whether the particles are provided in a continuous stream during the analysis or are collected in situ and analyzed periodically upon obtaining a suitable number of particles to be analyzed. The particulate matter in the particle beam (PB) is subjected to low-power laser scattering to effect particle size analysis. Gases removed by momentum separation are also analyzed.