Document Type

Patent

Publication Date

3-2-1993

Abstract

A method and apparatus for enabling analysis of a flowable material enclosed in a transport system having an infrared transparent wall portion. A temperature differential is transiently generated between a thin surface layer portion of the material and a lower or deeper portion of the material sufficient to alter the thermal infrared emission spectrum of the material from the black-body thermal infrared emission spectrum of the material, and the altered thermal infrared emission spectrum is detected through the infrared transparent portion of the transport system while the altered thermal infrared emission spectrum is sufficiently free of self-absorption by the material of emitted infrared radiation. The detection is effected prior to the temperature differential propagating into the lower or deeper portion of the material to an extent such that the altered thermal infrared emission spectrum is no longer sufficiently free of self-absorption by the material of emitted infrared radiation. By such detection, the detected altered thermal infrared emission spectrum is indicative of characteristics relating to molecular composition of the material.

Patent Number

US 5,191,215

ISURF Reference Number

01025

Assignee

Iowa State University Research Foundation, Inc.,

Application Number

US 07/749,186

Date Filed

8-23-1991

Language

en

File Format

application/pdf

EP0529925A2.pdf (275 kB)
EP 0 529 925 A2

EP0529925A3.pdf (140 kB)
EP 0 529 925 A3

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