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Updated: Aug 7, 2026
07:52
A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
Published on: April 12, 2017
[Raman micro-spectroscopy as a non-destructive technique for stone axes of new stone age]
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|August 30, 2003
Summary
Raman micro-spectroanalysis revealed the composition of ancient stone axes. Environmental contaminants likely impacted the artifact
Area of Science:
- Archaeological science
- Materials analysis
- Geochemistry
Context:
- Analysis of Neolithic artifacts from Yunnan Chuxiong.
- Investigation of stone axe composition and preservation.
Purpose:
- To analyze the micron-dimension crystal grains on the surface and cross-section of ancient stone axes.
- To infer the composition of the artifact's material.
- To assess the influence of environmental contaminants.
Summary:
- Raman micro-spectroanalysis was employed on two Neolithic stone axes.
- Experimental results provided insights into material composition and surface/cross-section grain analysis.
- Evidence of environmental contaminant impact was observed.
Impact:
- Informed understanding of Neolithic material technology and provenance.
- Highlighted the role of environmental factors in artifact degradation.
- Provided a methodological basis for analyzing similar archaeological finds.
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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 the...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...
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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
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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...