Microwave spectroscopy of the 1snp 3PJ fine structure of high Rydberg states in 4He

被引:13
作者
Deller, A. [1 ]
Hogan, S. D. [1 ]
机构
[1] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England
基金
英国工程与自然科学研究理事会; 欧洲研究理事会;
关键词
STRUCTURE INTERVALS; ATOMIC HELIUM; LAMB SHIFTS; IONIZATION; TRANSITION; ENERGIES; SERIES; VOLUME; LEVEL; BEAM;
D O I
10.1103/PhysRevA.97.012505
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The 1snp P-3(J) fine structure of high Rydberg states in helium has been measured by microwave spectroscopy of single-photon transitions from 1sns P-3(J) levels in pulsed supersonic beams. For states with principal quantum numbers in the range from n = 34 to 36, the J = 0 -> 2 and J = 1 -> 2 fine structure intervals were both observed. For values of n between 45 and 51 only the larger J = 0 -> 2 interval was resolved. The experimental results are in good agreement with theoretical predictions. Detailed characterization of residual uncanceled electric and magnetic fields in the experimental apparatus and calculations of the Stark and Zeeman structures of the Rydberg states in weak fields were used to quantify systematic contributions to the uncertainties in the measurements.
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页数:8
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