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Updated: Jul 2, 2026
08:53
Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
Published on: October 9, 2012
High pressure cell for Raman scattering at low temperatures
1Fachbereich Physik, Universitat Kaiserslautern, Federal Republic of Germany.
The Review of Scientific Instruments
|March 1, 1979
Summary
A versatile optical cell enables Raman and absorption studies on various materials under extreme conditions. This device facilitates in situ pressure measurements, crucial for understanding material properties.
Area of Science:
- Materials Science
- Spectroscopy
- Condensed Matter Physics
Background:
- Raman spectroscopy and absorption studies are vital for characterizing material properties.
- Investigating materials under extreme conditions (low temperature, high pressure) requires specialized equipment.
Purpose of the Study:
- To describe a novel optical cell designed for simultaneous Raman and absorption studies.
- To demonstrate the cell's capability for measurements at cryogenic temperatures and high pressures.
- To present typical spectroscopic results obtained using the cell.
Main Methods:
- Development of a specialized optical cell with a unique sample chamber geometry.
- Integration of a ruby manometer for in situ pressure monitoring.
- Application of the cell for Raman spectroscopy of solids and matrix-isolated molecules.
- Utilization of the cell for absorption spectroscopy of gases, liquids, and solids.
Main Results:
- The optical cell successfully operated from 4.2 K to 10 kilobars.
- Impurity-induced one-phonon Raman spectra of doped alkali halides were obtained.
- Fundamental vibrational Raman spectra of matrix-isolated molecules under pressure were recorded.
Conclusions:
- The described optical cell is a valuable tool for materials characterization under diverse and extreme conditions.
- The in situ pressure measurement capability enhances the reliability of spectroscopic data.
- The cell's design supports a wide range of applications in condensed matter physics and materials science.
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