ISSN:
1434-6079
Keywords:
32.30.J
;
35.10.B
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract High resolution interference and intermodulated optogalvanic saturation spectroscopy has been applied for isotope shift (IS) studies in the ground-configuration 4f 12 6s 2 of ErI. For the isotope pairs170–166Er and168–166Er the results confirm a strongJ- and term dependence of the IS caused through crossed-second-order (CSO) effects. We performed a parametric analysis to evaluate the CSO-parametersz 4f for the interpretation of theJ-dependence andT(3 H),T(3 F),T(1 G) to describe the term dependence. The following parameter values (in MHz) were determined, for170–166Er:z 4f =40.1(0.6),T(3 F)=−153(5),T(3 H)=−220(6), andT(1 G)=−79(4); for168–166Er:z 4f =20.1(0.7),T(3 F)=−77(6),T(3 H)=−111(7), andT(1 G) =−43(5). The normalization of these parameters with the corresponding nuclear parameters λ for both isotope pairs leads to almost identical parameter values indicating a dominant influence of the field shift effect in second-order for thez 4f parameter and in third-order for the parametersT(3 F),T(3 H), andT(1 G).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01426357
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