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Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

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Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
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Related Experiment Video

Updated: May 11, 2026

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

Published on: May 10, 2020

Compact remote multisensing instrument for planetary surfaces and atmospheres characterization.

M Nurul Abedin¹, Arthur T Bradley, Syed Ismail

¹Remote Sensing Flight Systems Branch, NASA Langley Research Center, 5 N. Dryden Street, MS 468, Hampton, Virginia 23681, USA. m.n.abedin@nasa.gov

|May 15, 2013

Summary

This study presents a versatile Raman-fluorescence spectrograph and lidar system for planetary science missions. The instrument can detect minerals, organics, and ices on Mars, aiding in geological and toxicity assessments.

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Last Updated: May 11, 2026

Surface Mapping of Earth-like Exoplanets using Single Point Light Curves

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Published on: May 10, 2020

Scattering And Absorption of Light in Planetary Regoliths

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Published on: July 1, 2019

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data

Published on: December 12, 2013

Area of Science:

Planetary Science
Astrobiology
Remote Sensing

Background:

Planetary missions require advanced instrumentation for in-situ and remote analysis.
Detecting minerals, organics, and volatiles is crucial for understanding planetary habitability and geology.

Purpose of the Study:

To demonstrate a prototype multipurpose Raman-fluorescence spectrograph and compact lidar system.
To assess the system's capabilities for detecting key chemical and physical properties of planetary materials and atmospheres.

Main Methods:

Development and testing of a prototype Raman-fluorescence spectrograph and lidar system.
Utilizing time-resolved fluorescence spectroscopy for ion distribution analysis.
Employing remote sensing techniques for geological and atmospheric profiling.

Main Results:

The prototype system demonstrates capabilities for detecting low-level minerals and organics on Mars.
The instrument can measure dust aerosol/cloud distributions and atmospheric carbon dioxide.
Successful identification of surface ices and methane hydrate is achievable.

Conclusions:

The developed instrument is suitable for robotic planetary science missions, enabling remote geological investigations.
The system offers significant potential for characterizing planetary surface and atmospheric composition.
Future iterations promise extended range capabilities for remote sensing.