ISSN:
1434-6079
Keywords:
32.00
;
35.10
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The investigation of the isotope shift (IS) and hyperfine structure (hfs) is extended from Eu 4f 7 6s7s to the complete configuration 4f 7 6s8s, by means of the transitions 432.3, 456.5, 463.0 and 493.8 nm to 4f 7 6s6p. A thorough experimental and theoretical analysis — including two further lines 492.8 and 498.7 nm from 4f 7 5d 2 — is carried out which e.g. confirms former fine structure calculations of one of us (J.F.W.) concerning some reclassifications. The discussion of the IS of the four levels (4f 7)6s8s with the sharing rule manifests again the need for inclusion of crossed-second-order effects. For the parameters we evaluated:g 3(4f, 6s)=−1, 2(2) mK andd=79, 3(1.0) mK. The ratiog 3/G 3=−5, 9(1.0)·10−6 is again in full agreement with those found by us in other Eu configurations. The single electron hfs splitting constantsa 4f 10 =−2, 3(4) mK,a 6s 10 =389(4) mK anda 8s 10 =49 (4) mK were also evaluated and compared to those found in 4f 7 6s7s.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01438231
