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Related Concept Videos

Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

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.
The atomizer used in AAS can be either a flame atomizer or an...

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Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
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A computer method for the automatic reduction of spectroscopic data.

E F Ditzel1, L E Giddings

  • 1The Naval Research Laboratory, Washington, DC 20390, USA.

Applied Optics
|January 12, 2010
PubMed
Summary
This summary is machine-generated.

A new Fortran IV computer program automates spectroscopic data reduction, significantly saving time. This method accurately identifies spectral peaks and calculates absolute radiance or irradiance values.

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Area of Science:

  • Spectroscopy
  • Computational Physics
  • Data Analysis

Background:

  • Traditional spectroscopic data reduction is time-consuming.
  • Manual analysis can be prone to errors, especially with variable background densities.

Purpose of the Study:

  • To develop an automated system for reducing spectroscopic data.
  • To improve the accuracy and efficiency of spectral analysis.

Main Methods:

  • A Fortran IV computer program was developed for use with a spectral comparator.
  • A Datex digitalizing magnetic tape recorder and modified Jarrell-Ash microphotometer were employed.
  • The system reads spectral information from photographic plates at 25 data pairs per second.

Main Results:

  • The program successfully recognizes spectral peaks against variable backgrounds.
  • It accurately obtains absolute values for radiance and irradiance.
  • Significant time savings were achieved in data reduction.

Conclusions:

  • The developed computer program offers an efficient and accurate method for spectroscopic data reduction.
  • This automation is valuable for analyzing various spectra, including absorption, emission, plasma, and solar echellegrams.
  • The system enhances the utility of time-resolved spectroscopic techniques and rocket-based atmospheric studies.