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Related Concept Videos

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

3.0K
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...
3.0K
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

1.5K
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.
1.5K
Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

4.1K
Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
4.1K
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

1.1K
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....
1.1K
Interaction of EM Radiation with Matter: Spectroscopy01:12

Interaction of EM Radiation with Matter: Spectroscopy

4.0K
Electromagnetic (EM) radiation can be considered an oscillating electric and magnetic field propagating through a medium that can interact with matter in its path. The electric field in the radiation can interact with electrical charges in the atoms or molecules in the matter. On the other hand, the magnetic field can interact with the magnetic field in the atomic nucleus. The study of the interaction between electromagnetic radiation and matter is termed spectroscopy. Spectroscopy is the study...
4.0K
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

868
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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Related Experiment Video

Updated: Apr 27, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
08:53

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Published on: October 9, 2012

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Wide-angle energy-momentum spectroscopy.

Christopher M Dodson, Jonathan A Kurvits, Dongfang Li

    Optics Letters
    |July 1, 2014
    PubMed
    Summary
    This summary is machine-generated.

    We developed wide-angle energy-momentum spectroscopy to fully characterize light emission. This method resolves energy, momentum, and polarization distributions, enabling precise quantification of intrinsic emission rates for dipole transitions.

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    Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
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    Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
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    Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
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    Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
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    Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
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    Area of Science:

    • Optics and Photonics
    • Spectroscopy
    • Materials Science

    Background:

    • Light emission is fundamentally characterized by its distribution in energy, momentum, and polarization.
    • Understanding these distributions is crucial for various applications, including lighting, displays, and sensing.
    • Current methods often struggle to resolve all these properties simultaneously with high fidelity.

    Purpose of the Study:

    • To demonstrate a novel method for resolving the full energy, momentum, and polarization distributions of light emission.
    • To enable the quantification of intrinsic emission rates for electric and magnetic dipole transitions.
    • To reconstruct detailed, polarized, two-dimensional radiation patterns at specific wavelengths.

    Main Methods:

    • Utilizing wide-angle energy-momentum spectroscopy.
    • Imaging the back focal plane of a microscope objective through a Wollaston prism to capture polarized Fourier-space momentum distributions.
    • Dispersing two-dimensional radiation patterns using an imaging spectrograph without an entrance slit, followed by deconvolution.

    Main Results:

    • Successfully resolved the complete energy, momentum, and polarization distributions of light emission.
    • Quantified intrinsic emission rates for electric and magnetic dipole transitions in Eu³⁺:Y₂O₃ and Cr³⁺:MgO.
    • Reconstructed full, polarized, two-dimensional radiation patterns at each wavelength.

    Conclusions:

    • The developed wide-angle energy-momentum spectroscopy is an effective technique for comprehensive light emission analysis.
    • This method provides a powerful tool for characterizing and understanding light-emitting materials and phenomena.
    • The ability to deconvolve and reconstruct detailed emission patterns opens new avenues for optical material research.