Correlation of spectral-line intensity-ratio fluctuations of different elements.
Reasonably linear correlations have been obtained for spectral lines from different elements in an double-chamber hollow-cathode lamp when the spectral-line intensity-ratio fluctuations are plotted vs. the photon energies and ionization energies of these lines. When these fluctuations are plotted as a function of the upper level energies, no linear relation at all is obtained. The analyses were done by using a computerized image-dissector echelle-spectrometer system.
Thelin
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Swedish Institute of Space Physics,(1) P.O. Box 812, S-981 28 Kiruna, Sweden.