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Related Concept Videos

IR Spectrometers01:25

IR Spectrometers

1.1K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
1.1K
Infrared (IR) Spectroscopy: Overview01:09

Infrared (IR) Spectroscopy: Overview

1.6K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
1.6K
Atomic Spectroscopy: Effects of Temperature01:27

Atomic Spectroscopy: Effects of Temperature

325
Atomization, converting samples into gas-phase atoms and ions, is essential for atomic spectroscopy. The flame temperature required for atomization affects the efficiency of the atomic spectroscopic methods by increasing the atomization efficiency and the relative population of the excited and ground states.
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature...
325
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

343
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.
The ATR process begins by directing a beam...
343
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

1.3K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
1.3K

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Related Experiment Video

Updated: Jun 22, 2025

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
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High-temperature setup for infrared reflection spectroscopy.

Marc Steigleder, Martin Dressel

    The Review of Scientific Instruments
    |July 1, 2024
    PubMed
    Summary

    We developed a new oven for high-temperature optical reflection measurements up to 1000 K. This compact setup, attachable to Fourier-transform infrared spectrometers, provides accurate infrared reflectivity data for materials like tungsten.

    Area of Science:

    • Materials Science
    • Optical Physics
    • Spectroscopy

    Background:

    • Accurate optical reflection measurements are crucial for material characterization.
    • High-temperature measurements present unique experimental challenges.
    • Existing setups may lack compactness or broad spectrometer compatibility.

    Purpose of the Study:

    • To design and validate a novel oven for optical reflection measurements up to 1000 K.
    • To enable high-temperature infrared reflectivity analysis.
    • To provide a reference mirror for future experiments.

    Main Methods:

    • Developed a compact oven specifically for optical reflection measurements.
    • Integrated the oven with a Fourier-transform infrared spectrometer (FTIR) via a microscope.

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  • Established protocols for reference measurements and data correction at elevated temperatures.

    • Main Results:

    • Successfully designed and operated a high-temperature oven (up to 1000 K).
    • Demonstrated the system's compatibility with standard FTIR spectrometers.
    • Determined the infrared reflectivity of tungsten up to 1000 K.

    Conclusions:

    • The developed oven is a versatile and effective tool for high-temperature optical reflection studies.
    • The measured infrared reflectivity of tungsten can serve as a valuable reference standard.
    • This setup advances the capability for in-situ material analysis at elevated temperatures.