FINE-STRUCTURE OF RYDBERG STATES .4. COMPLETELY RESOLVED FINE-STRUCTURE IN D, F, AND G STATES OF HE-4

被引:67
作者
FARLEY, JW [1 ]
MACADAM, KB [1 ]
WING, WH [1 ]
机构
[1] UNIV ARIZONA,CTR OPT SCI,TUCSON,AZ 85721
来源
PHYSICAL REVIEW A | 1979年 / 20卷 / 05期
关键词
D O I
10.1103/PhysRevA.20.1754
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The authors have made extensive new measurements in Rydberg (n=6-11) D, F, and G states of helium. The new data represent over 1100 individual resonance scans, totalling some 2200 h of data-collection time. In order to perform such a large number of runs, data logging has been automated by interfacing a microcomputer to an apparatus previously used to make fine-structure measurements in one- and two-electron atoms. An exhaustive analysis of possible systematic line-center shifts, including black-body radiation effects, was carried out. The root-mean-square one-standard-deviation experimental uncertainty is 294 kHz for our 67 measurements. The large quantity of new measurements has allowed us to perform a global least-squares fit to all existing state-resolved data in D, F, and G states. The complete structure of the D, F, and G manifolds is now known for n 6 to a precision of a few megahertz or better. Current theoretical calculations for a typical (30-GHz) interval differ from the measurements by 6×10-8 a.u., or over 1000 experimental standard deviations. © 1979 The American Physical Society.
引用
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页码:1754 / 1772
页数:19
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