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Related Concept Videos

Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

855
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

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The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
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Updated: Dec 16, 2025

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
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Detecting Minerals and Organics Relevant to Planetary Exploration Using a Compact Portable Remote Raman System at 122

Macey W Sandford1, Anupam K Misra1, Tayro E Acosta-Maeda1

  • 1Hawaii Institute of Geophysics and Planetology, University of Hawai'i at Mānoa, Honolulu, HI, USA.

Applied Spectroscopy
|July 3, 2020
PubMed
Summary
This summary is machine-generated.

Scientists developed a compact remote Raman system for detecting water, ice, minerals, and organics on other planets. This technology achieved the longest remote detection distance for a compact system, aiding planetary exploration and the search for extraterrestrial life.

Keywords:
Raman spectroscopyplanetary explorationremote Raman detectionremote sensingspectroscopic techniques

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Area of Science:

  • Planetary Science
  • Astrobiology
  • Spectroscopy

Background:

  • Raman spectroscopy is crucial for detecting molecular compounds like water, minerals, and organics.
  • Identifying these compounds is key to assessing habitability on planetary bodies.
  • Planetary exploration missions aim to detect and characterize such compounds across the solar system.

Purpose of the Study:

  • To develop and test a compact portable remote Raman system for planetary exploration.
  • To achieve long-distance detection of various molecular compounds.
  • To demonstrate the system's applicability for identifying signs of life and resources.

Main Methods:

  • Utilized a compact portable remote Raman system with a 532 nm Nd:YAG pulsed laser.
  • Employed a 3-inch mirror lens and a compact spectrograph with a mini-ICCD.
  • Conducted remote detection experiments under natural lighting conditions.

Main Results:

  • Successfully detected water (H2O), water ice (H2O-ice), CO2-ice, hydrous minerals, organics, nitrates, and an amino acid.
  • Achieved remote detection at a distance of 122 meters.
  • Established a new record for the longest remote Raman detection using a compact system.

Conclusions:

  • The developed compact portable remote Raman system offers unambiguous detection of compounds indicative of life.
  • This technology is highly applicable to solar system exploration missions, including landers for ocean worlds and lunar exploration.
  • The system can identify both potential biosignatures and essential resources for future human exploration.