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Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

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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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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.
1.7K
Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

790
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
790
Atomic Nuclei: Larmor Precession Frequency01:11

Atomic Nuclei: Larmor Precession Frequency

3.8K
The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession,...
3.8K
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

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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: Absorption, Emission, and Fluorescence01:23

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

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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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Related Experiment Video

Updated: Apr 20, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

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Axion dark matter detection using atomic transitions.

P Sikivie1

  • 1Department of Physics, University of Florida, Gainesville, Florida 32611, USA.

Physical Review Letters
|November 29, 2014
PubMed
Summary
This summary is machine-generated.

This study proposes a novel method for detecting dark matter axions by observing atomic transitions. The technique uses laser detection of axion-induced transitions in a cooled sample, targeting axion dark matter in a specific mass range.

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Area of Science:

  • Astrophysics and Particle Physics
  • Experimental Physics

Background:

  • Dark matter axions are hypothetical particles proposed to solve cosmological puzzles.
  • Axions can mediate transitions between atomic states with energy shifts equal to their mass.
  • The Zeeman effect offers a tunable method to match atomic energy differences with potential axion masses.

Purpose of the Study:

  • To propose a new experimental approach for detecting axion dark matter.
  • To explore the feasibility of using atomic transitions for axion detection.
  • To target the 10^-4 eV mass range for axion dark matter searches.

Main Methods:

  • Cooling a kilogram-sized sample to millikelvin temperatures.
  • Utilizing laser techniques to detect axion-induced atomic transitions.
  • Employing the Zeeman effect to tune atomic energy level differences.

Main Results:

  • The proposed method is suitable for detecting axion dark matter.
  • The experiment targets axions in the 10^-4 eV mass range.
  • Axion-induced transitions can be counted using advanced laser techniques.

Conclusions:

  • The experimental setup offers a promising avenue for axion dark matter detection.
  • This approach provides a viable method for probing a specific axion mass range.
  • Further research and development of this technique are warranted.