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Related Concept Videos

Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

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The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
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Atomic Emission Spectroscopy: Lab01:29

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AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
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Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis
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Electron spectroscopy with a diamond detector.

C S Bodie1, G Lioliou1, G Lefeuvre2

  • 1Space Research Group, Sch. of Mathematical and Physical Sciences, University of Sussex, Falmer, Brighton, BN1 9QT, UK.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|December 5, 2021
PubMed
Summary
This summary is machine-generated.

This study demonstrates a diamond detector for high-temperature spectroscopic electron detection in space. It operates effectively between -20°C and 80°C, with polarization effects noted above 80°C.

Keywords:
Electron spectrometersRadiation detectors

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Area of Science:

  • Materials Science
  • Particle Physics
  • Space Instrumentation

Background:

  • Development of advanced detectors for space science is crucial.
  • Diamond detectors offer potential for high-temperature applications due to their robust properties.

Purpose of the Study:

  • To investigate a chemical vapour deposition diamond as a prototype high-temperature spectroscopic electron detector.
  • To evaluate detector performance across a range of temperatures for space applications.

Main Methods:

  • Utilized a single crystal chemical vapour deposition diamond detector coupled with a low-noise preamplifier.
  • Employed a 63Ni radioisotope source for beta particle spectroscopy.
  • Conducted Monte Carlo modeling to simulate particle interactions and predict detector response.
  • Tested detector performance from -20°C to +100°C in 20°C intervals.

Main Results:

  • The diamond detector demonstrated spectroscopic capabilities for beta particles.
  • Full operability was confirmed in the temperature range of -20°C to 80°C.
  • A 4.5 μm recombination region at the detector's front was identified through model-experiment comparison.
  • Polarization phenomena were observed at temperatures exceeding 80°C.

Conclusions:

  • The study presents the first energy-calibrated spectroscopic beta particle diamond detector for high-temperature operation.
  • Diamond detectors are viable candidates for future space science instruments requiring high-temperature electron detection.
  • Further investigation into polarization effects at elevated temperatures is warranted.