Self-Absorption in Copper Hollow Cathode Discharges; Effects on Spectral Lineshape and Absorption Sensitivity.

Abstract

The intensity of the hyperfine doublet of the Cu I 324.8 nm transition was observed as a function of current, fill gas, and fill gas pressure for a new design of hollow cathode lamp incorporating a positive column and an enlarged volume cathode cavity. The intensity ratio of the two components, which reflects the degree of self-absorption, and the flame absorption sensitivity were compared with a conventional hollow cathode lamp. Higher intensity, better component ratio, and increased absorption sensitivity was found in the new lamp. Keywords: Hollow cathode; Spectral lineshape; Atomic absorption; Copper; Self absorption.

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Document Details

Document Type
Technical Report
Publication Date
Feb 04, 1988
Accession Number
ADA194769

Entities

People

  • Herbert L. Lancaster
  • Hugh A. Phillips
  • Karoly Rozsa
  • M. Bonner Denton
  • Pal Apai

Organizations

  • University of Arizona

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption
  • Chemistry
  • Discharge Lamps
  • Electron Density
  • Electrons
  • Glow Discharges
  • Intensity
  • Lamps
  • Light Sources
  • Measurement
  • Military Research
  • Power Supplies
  • Radiation
  • Sensitivity
  • Spectroscopy
  • United States
  • United States Government

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Spectroscopy.