OPTIMIZATION OF DIFFUSE REFLECTANCE INFRARED-SPECTROSCOPY ACCESSORIES

被引：11

作者：

HIRSCHFELD, T

机构：

[1] Lawrence Livermore Natl Lab,, Livermore, CA, USA, Lawrence Livermore Natl Lab, Livermore, CA, USA

来源：

APPLIED SPECTROSCOPY | 1986年 / 40卷 / 08期

关键词：

MIRRORS; -; Applications;

D O I：

10.1366/0003702864507729

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The value of diffuse reflectance as an infrared or near-infrared spectroscopic sampling procedure has been limited by the low efficiency of accessories designed for it. In terms of signal-to-noise ratio, these average 2-6% for integrating spheres and 10-12% for various ellipsoidal mirror arrangements. Much better performances, up to 37% efficiency, can be obtained by optimizing a concentric confocal ellipsoidal mirror arrangement by using a very large central opening in the amular collector mirror, and adapting the throughput of the detector to the geometry of the collected beam.

引用

页码：1082 / 1085

页数：4