First pure frequency measurement of an optical transition in helium: Lamb shift on the 2[sup 3][ital S][sub 1] metastable level
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics and European Laboratory for Nonlinear Spectroscopy (LENS), University of Florence, Largo E. Fermi, 2 I-50125 Firenze (Italy)
- Laboratorie Kastler-Brossel'' de l' Ecole Normale Superieure, Universite Pierre et Marie Curie, Paris (France)
The 2[sup 3][ital S][sub 1-]3[sup 3][ital P][sub 0][sup 4]He transition at [lambda][sub 0]=389 nm is measured with respect to a previously frequency calibrated [sup 87]Rb two-photon transition at 2[lambda][sub 0]=778 nm. The [sup 4]He absolute frequency is 770 732 839 058 (190) kHz, with an accuracy of 2.4 parts in 10[sup 10]. A Lamb shift value of +4057.61 (79) MHz, with 600 kHz uncertainty arising from the theoretical position of the 3[sup 3][ital P][sub 0] energy level, is extracted for the 2[sup 3][ital S][sub 1] level. This value is more than 2 orders of magnitude more accurate than the current best theoretical predictions.
- OSTI ID:
- 7272220
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:1; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
664400* -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIBRATION
DATA
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
HELIUM 4
HELIUM ISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LAMB SHIFT
LIGHT NUCLEI
METASTABLE STATES
MULTI-PHOTON PROCESSES
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
P STATES
RADIOISOTOPES
RUBIDIUM 87
RUBIDIUM ISOTOPES
S STATES
SPECTRAL SHIFT
STABLE ISOTOPES
STANDARDS
YEARS LIVING RADIOISOTOPES
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIBRATION
DATA
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
HELIUM 4
HELIUM ISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LAMB SHIFT
LIGHT NUCLEI
METASTABLE STATES
MULTI-PHOTON PROCESSES
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
P STATES
RADIOISOTOPES
RUBIDIUM 87
RUBIDIUM ISOTOPES
S STATES
SPECTRAL SHIFT
STABLE ISOTOPES
STANDARDS
YEARS LIVING RADIOISOTOPES