Improved Result for HeliumIonization Energy
- 15 May 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 84 (20), 4561-4564
- https://doi.org/10.1103/physrevlett.84.4561
Abstract
A complete calculation of relativistic and quantum electrodynamic effects to order malpha(6) on the energy of the 2(3)S1 state in helium is presented. The result, beyond the previously known radiative corrections, amounts to -3.00(1) MHz, and significantly reduces the theoretical uncertainty. The improved theoretical predictions are compared to the best available experimental result for the 2(3)S1 state.Keywords
This publication has 11 references indexed in Scilit:
- Recoil corrections to the Lamb shift in heliumJournal of Physics B: Atomic, Molecular and Optical Physics, 2000
- Bethe logarithm for theandstates of heliumPhysical Review A, 1999
- Effective Hamiltonian approach to the bound state: energy of helium -states in the orderJournal of Physics B: Atomic, Molecular and Optical Physics, 1998
- Two-stage strategy for high-precision variational calculationsPhysical Review A, 1998
- Accurate Measurement of theTwo-Photon Transition Frequency in Helium: New Determination of theLamb ShiftPhysical Review Letters, 1997
- High Precision Calculation of Fine Structure Splittings in Helium and He-Like IonsPhysical Review Letters, 1995
- Variational eigenvalues for the S states of heliumChemical Physics Letters, 1994
- First Pure Frequency Measurement of an Optical Transition in Helium: Lamb Shift of the23S1Metastable LevelPhysical Review Letters, 1994
- Precise measurement of the Lamb shift and fine structure of the 2S-2Ptransition in triplet heliumPhysical Review Letters, 1994
- Quantum electrodynamical corrections to the fine structure of heliumAnnals of Physics, 1974