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Related Concept Videos

Emission Spectra02:39

Emission Spectra

75.2K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
75.2K
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

1.1K
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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Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

1.4K
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
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Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

1.0K
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...
1.0K
Atomic Fluorescence Spectroscopy01:29

Atomic Fluorescence Spectroscopy

841
Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
841
IR Spectrometers01:25

IR Spectrometers

2.1K
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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Related Experiment Video

Updated: Dec 26, 2025

Low-energy Cathodoluminescence for OxyNitride Phosphors
07:03

Low-energy Cathodoluminescence for OxyNitride Phosphors

Published on: November 15, 2016

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The Iron-Neon Hollow-Cathode Spectrum.

H M Crosswhite1

  • 1The Johns Hopkins University, Baltimore Md. 21218.

Journal of Research of the National Bureau of Standards. Section A, Physics and Chemistry
|March 19, 2020
PubMed
Summary

This study details over 4000 spectral lines for iron (Fe) and neon (Ne) atoms and ions, measured using a hollow cathode discharge tube. New energy levels for Fe I were computed, aiding in the calculation of Ritz standards for spectral lines.

Area of Science:

  • Atomic Physics
  • Spectroscopy
  • Plasma Physics

Background:

  • Accurate spectral line data is crucial for astrophysical and laboratory plasma diagnostics.
  • Previous spectral line catalogs for iron (Fe) and neon (Ne) may have limitations in coverage or precision.

Purpose of the Study:

  • To comprehensively catalog spectral lines of neutral and ionized iron (Fe I, Fe II) and neon (Ne I, Ne II).
  • To compute energy levels for neutral iron (Fe I) and establish Ritz standards for its spectral lines.
  • To provide photo-electric traces for semiquantitative intensity analysis.

Main Methods:

  • Measurements were conducted using a hollow cathode discharge tube with iron electrodes and neon gas.
  • Spectral lines were recorded across a wide wavelength range (1900–9000 Å).
Keywords:
Hollow cathodeironneonwavelength standards

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Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
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Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

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Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
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Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

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Related Experiment Videos

Last Updated: Dec 26, 2025

Low-energy Cathodoluminescence for OxyNitride Phosphors
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Low-energy Cathodoluminescence for OxyNitride Phosphors

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Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
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Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

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Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
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  • Photo-electric traces were obtained between 2400–5700 Å.

    • Main Results:

    • Over 4000 spectral lines for Fe I, Fe II, Ne I, and Ne II were identified and cataloged.
    • Energy values for 124 even and 240 odd levels of Fe I were computed.
    • Ritz standards were calculated for a significant portion of Fe I lines.

    Conclusions:

    • The study provides a valuable, extended spectral line catalog for iron and neon.
    • The computed energy levels and Ritz standards enhance the accuracy of Fe I spectral analysis.
    • This data serves as a fundamental resource for atomic spectroscopy and related fields.