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Atomic Emission Spectroscopy: Instrumentation

Atomic Emission Spectroscopy: Instrumentation

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.

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used.

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...

Scanning Electron Microscopy

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
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Atomic Emission Spectroscopy: Lab

Atomic Emission Spectroscopy: Lab

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...

Transmission Electron Microscopy

Transmission Electron Microscopy

In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400 keV in...

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Related Experiment Video

Updated: May 18, 2026

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors

Published on: November 15, 2016

Quasi-monochromatic field-emission x-ray source.

Babacar Diop¹, Vu Thien Binh

¹LPMCN, University of Lyon 1, Villeurbanne 69622, France.

The Review of Scientific Instruments

|October 2, 2012

Summary

Direct quasi-monochromatic soft x-ray emission was achieved using a novel field emission (FE) x-ray source. This advancement offers tunable wavelengths and controlled intensity for advanced applications.

Area of Science:

Physics
Materials Science
Engineering

Background:

Traditional X-ray sources often produce broad-spectrum bremsstrahlung radiation.
Achieving monochromatic soft X-ray emission is crucial for various scientific and industrial applications.

Purpose of the Study:

To develop a direct quasi-monochromatic soft X-ray emission method.
To utilize a field emission (FE) x-ray source for enhanced X-ray generation.

Main Methods:

Employed an electron impact x-ray setup with an arrayed cathode of carbon nanopearl FE tips.
Operated the source in a high vacuum environment (10(-6)-10(-7) Torr).
Utilized different target materials to tune the X-ray wavelength.

Main Results:

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Related Experiment Videos

Last Updated: May 18, 2026

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors

Low-energy Cathodoluminescence for (Oxy)Nitride Phosphors

Published on: November 15, 2016

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Electron Channeling Contrast Imaging for Rapid III-V Heteroepitaxial Characterization

Published on: July 17, 2015

Preparing a Celadonite Electron Source and Estimating Its Brightness

Preparing a Celadonite Electron Source and Estimating Its Brightness

Published on: November 5, 2019

Successfully favored L-peak emission over bremsstrahlung radiation.
Achieved direct quasi-monochromatic soft X-ray emission.
Using a Molybdenum (Mo) target, a peak emission centered at 2.45 keV was observed.
The monochromaticity ranged from 75% to 55% with a Full Width at Half Maximum (FWHM) of approximately 450 eV.

Conclusions:

The developed FE x-ray source provides a stable, cold electron source.
High brightness and array structure enable smoother control of X-ray intensity.
Tunable wavelength and monochromatic emission make this source suitable for advanced applications.