Method for determining background and correction of broadband background

US7876435B2 · kind B2 · utility

Assignee

• Leibniz-Institut Für Analytische Wissenschaften-ISAS-e.V. · DE

Inventors

• Helmut Becker-Ross · Berlin, DE
• Stefan Florek · Berlin, DE
• Michael Okruss · Potsdam, DE

Key dates

• Filing date: Jan 14, 2008
• Grant date: Jan 25, 2011
• Expiry date: Oct 4, 2028

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J2003/2866
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method to determine and correct broadband background in complex spectra in a simple and automatized manner includes carrying out a background correction with respect to broadband background before a calibration step. The background correction may involve recording a spectral graph and smoothing the recorded spectral graph, determining all values in the initially recorded graph having a value higher than the value of the smoothed graph and reducing such values to the value of the smoothed graph, and repeating these two steps. The background graph obtained is then subtracted from the initial graph. The smoothing of the graph is carried out by moving average, where each intensity value I at the position x in the spectrum is replaced by an average value. The characteristics of the found peaks can be stored in a file so that the calibration can be used at any time.