Method and apparatus for background signal reduction in opto-acoustic absorption measurement

The sensitivity of an opto-acoustic absorption detector is increased to make it possible to measure trace amounts of constituent gases. A second beam radiation path is created through the sample cell identical to a first path except as to length, alternating the beam through the two paths and minimi...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	Rosengren, L. G.
Format:	Report
Sprache:	eng
Schlagworte:	Instrumentation And Photography
Online-Zugang:	Volltext bestellen
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