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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.
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Related Experiment Video

Updated: Feb 15, 2026

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer

Published on: April 12, 2017

A sample holder for simultaneous Raman and neutron vibrational spectroscopy.

R C Gillis¹, Y Q Cheng¹, F X Gallmeier¹

¹Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.

The Review of Scientific Instruments

|February 3, 2018

Summary

This summary is machine-generated.

Researchers developed a novel sample holder for simultaneous Raman and neutron vibrational spectroscopy at cryogenic temperatures. This innovation enables in-situ gas loading and evacuation for materials analysis at the VISION spectrometer.

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Published on: April 28, 2016

Area of Science:

Materials Science
Spectroscopy
Condensed Matter Physics

Background:

Neutron vibrational spectroscopy and Raman spectroscopy are powerful techniques for probing molecular and lattice dynamics.
Simultaneous measurements can provide complementary information, enhancing structural and dynamic insights.
Cryogenic temperatures are crucial for studying certain material phases and quantum phenomena.

Purpose of the Study:

To design and construct a versatile sample holder for combined Raman and neutron vibrational spectroscopy.
To enable in-situ sample manipulation, including gas loading and evacuation, within a cryogenic environment.
To demonstrate the capability of the system through measurements on model compounds.

Main Methods:

Development of a cryogenic sample holder with integrated optical components for Raman spectroscopy.
Utilizing the VISION neutron vibrational spectrometer at Oak Ridge National Laboratory's Spallation Neutron Source.
Performing simultaneous Raman and neutron vibrational spectroscopy on 4-nitrophenol and cryogenic hydrogen samples.

Main Results:

Successful construction and implementation of the simultaneous spectroscopy sample holder.
Acquisition of simultaneous Raman and neutron vibrational spectra at temperatures as low as 5 K.
Demonstration of in-situ gas loading/evacuation capabilities within the cryogenic spectrometer.

Conclusions:

The developed sample holder significantly enhances the capabilities for combined Raman and neutron vibrational spectroscopy.
This system allows for unprecedented studies of materials under cryogenic conditions with in-situ gas control.
Future applications include the investigation of hydrogen storage materials, quantum solids, and other low-temperature phenomena.