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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 Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

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For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
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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 Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

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An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
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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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In Situ Detection and Single Cell Quantification of Metal Oxide Nanoparticles Using Nuclear Microprobe Analysis
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Muonic atom spectroscopy with microgram target material.

A Adamczak1, A Antognini2,3, N Berger4,5

  • 1Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland.

The European Physical Journal. A, Hadrons and Nuclei
|February 8, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a novel method for muonic atom spectroscopy, significantly reducing the required target material. This breakthrough enables precise nuclear size measurements using only milligrams of material, expanding the possibilities for nuclear physics research.

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Area of Science:

  • Nuclear Physics
  • Atomic Physics
  • Spectroscopy

Background:

  • Muonic atom spectroscopy is a powerful technique for determining nuclear charge radii with high accuracy.
  • Traditional methods require substantial target material (hundreds of milligrams) due to the need to stop muon beams directly.
  • This limitation restricts the application of muonic atom spectroscopy to elements available in sufficient quantities.

Purpose of the Study:

  • To develop a new, more efficient method for muonic atom spectroscopy.
  • To significantly reduce the amount of target material required for muonic atom spectroscopy measurements.
  • To enable high-precision nuclear structure studies on a wider range of elements.

Main Methods:

  • A novel technique employing repeated transfer reactions within a high-pressure (100 bar) hydrogen gas cell with a deuterium admixture (0.25%) was developed.
  • Detailed simulations of the transfer reaction dynamics were performed and validated against experimental data.
  • The method was demonstrated by measuring 2p-1s muonic x rays from a 5 µg gold target.

Main Results:

  • The new method drastically reduces the necessary target material to microgram quantities while maintaining adequate efficiency.
  • Simulations accurately reproduced experimental data, confirming a good understanding of the underlying transfer reaction processes.
  • Successful proof-of-principle measurement achieved using a minimal gold target.

Conclusions:

  • The developed method overcomes the material limitations of traditional muonic atom spectroscopy.
  • This technique opens new avenues for precise nuclear charge radius measurements, particularly for rare or low-abundant isotopes.
  • The findings pave the way for broader applications of muonic atom spectroscopy in nuclear structure and fundamental physics.