Patent ID: 9625372
Date: 2017-04-18
CPC Classifications: G01N

Claim:
1. A system comprising: a chamber having a plurality of chamber walls forming a wider central region of the chamber to lengthen an optical path of an ultraviolet beam emitted therein; an ultraviolet source mounted on a first interior surface of the chamber, wherein the ultraviolet source includes a set of solid state light emitting diodes; an ultraviolet detector mounted on the first interior surface of the chamber, wherein the plurality of chamber walls of the chamber comprise reflecting walls having an ultraviolet reflection coefficient of at least eighty percent; a set of beam guiding components optically coupled to the ultraviolet source and the ultraviolet detector, wherein the set of beam guiding components is configured to direct the ultraviolet beam onto a surface of the ultraviolet detector and further lengthen the optical path of the ultraviolet beam between the ultraviolet source and the ultraviolet detector, and wherein the set of beam guiding components includes: a computer system for evaluating a sample gas in the chamber for a presence of a trace gas by performing a method including: