Laser spectroscopy of the 1 S -2 S transition in hydrogen and deuterium: Determination of the 1 S Lamb shift and the Rydberg constant
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX13PU, United Kingdom (GB)
We have observed the narrow 1{ital S}-2{ital S} transition in hydrogen and deuterium with high resolution using Doppler-free two-photon absorption of continuous-wave 243-nm light. The transition frequencies were measured by direct comparison with accurately calibrated lines in the spectrum of the {sup 130}Te{sub 2} molecule. We find the 1{ital S}-2{ital S} interval to be 2 466 061 414.1(8) MHz in hydrogen and 2 466 732 408.5(7) MHz in deuterium. By combining these results with recent measurements of the Rydberg constant we obtain the values 8172.6(7) and 8183.7(6) MHz for the 1{ital S} Lamb shifts in hydrogen and deuterium, respectively. These are the most precise measurements of the 1{ital S} Lamb shifts in these atoms and they are in excellent agreement with the theoretical values of 8173.03(9) and 8184.08(12) MHz. Alternatively, if the 1{ital S} Lamb shift is supposed known from theory, our measurements determine the Rydberg constant as {ital R}{sub {infinity}}=109 737.315 73(3) cm{sup {minus}1}.
- OSTI ID:
- 7017627
- Journal Information:
- Physical Review (Section) A: General Physics; (USA), Vol. 40:11; ISSN 0556-2791
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DEUTERIUM
LAMB SHIFT
RYDBERG CONSTANT
HYDROGEN
ACCURACY
ENERGY-LEVEL TRANSITIONS
LASER SPECTROSCOPY
MEASURING METHODS
S STATES
ELEMENTS
ENERGY LEVELS
FUNDAMENTAL CONSTANTS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
ODD-ODD NUCLEI
SPECTRAL SHIFT
SPECTROSCOPY
STABLE ISOTOPES
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory