PRECISION-MEASUREMENT OF THE 2(3)S-]3(3)P TRANSITION IN HE-4

被引：11

作者：

ADAMS, CS ^{[1
]}

RIIS, E ^{[1
]}

FERGUSON, AI ^{[1
]}

ROWLEY, WRC ^{[1
]}

机构：

[1] NATL PHYS LAB, TEDDINGTON TW11 0LW, MIDDX, ENGLAND

来源：

PHYSICAL REVIEW A | 1992年 / 45卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.45.R2667

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a precision measurement of the 2 3S --> 3 3P transition in He-4. Doppler-free spectra of the transition were observed by exciting metastable helium atoms, produced by a chopped rf discharge, using 389-nm radiation generated by a frequency-doubled Ti-doped sapphire laser. A frequency measurement of the Doppler-free lines was made by interferometric comparison of the Ti-doped sapphire frequency with that of an iodine-stabilized He-Ne laser using a 1-m evacuated Fabry-Perot etalon. The measurement uncertainty was 2 parts in 10(9) (3 standard deviations), which gives an improvement of a factor of 60 in the term value of the 3 3P level with respect to earlier measurements. This result makes it possible to determine the one electron Lamb-shift correction to the 3 3P state with an accuracy of 0.8%.

引用

页码：R2667 / R2670

页数：4

共 22 条

[1] SATURATED SPECTROSCOPY AND 2-PHOTON ABSORPTION-SPECTROSCOPY IN RUBIDIUM USING AN ACTIVELY STABILIZED TI-AL2O3 RING LASER [J].