Abstract
New measurements of the isotope shifts of a group of lines in the orange and red, due to transitions of the type 6p-7, 8 and 9d, have now been made, since the uncertainties of earlier measurements (Jackson & Coulombe 1974) were relatively large, between 0.4 and 1.0 m k. The uncertainties of the new measurements have been reduced to between 0.2 and 0.5 mk and the number of lines investigated has been increased from 8 to 13. The isotope shifts of 2 lines due to the forbidden transitions 6s'-5f and one line due to the transition 5d-7f have also been measured.
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12 articles.
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