Energy levels for the stable isotopes of atomic helium(4He I and 3He I)
- 1 February 2006
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 84 (2) , 83-105
- https://doi.org/10.1139/p06-009
Abstract
We calculate very accurate ab initio ionization energies for both 4He I and 3He I as well as the isotope shifts for n = 1 to 10, L = 0 to 7 and combined these with precise laboratory data to produce a new table of levels for 4He I and the first table for 3He I. We adopted an experimental ionization potential of 5945 204 290 ± 33 MHz for 4He I and derived 5944 890 770 ± 33 MHz for 3He I. Additional calculations of the magnetic perturbations of 3He I provide the hyperfine levels, which compare favourably with the available measurements.PACS Nos.: 31.30.Gs, 31.30.JvKeywords
This publication has 65 references indexed in Scilit:
- Higher-order recoil corrections to helium fine structureJournal of Physics B: Atomic, Molecular and Optical Physics, 2003
- QED corrections to singlet levels of the helium atom: A complete set of effective operators toPhysical Review A, 2001
- Hyperfine splitting of 23S1state in He3Journal of Physics B: Atomic, Molecular and Optical Physics, 2001
- Measurements ofG-HandH-Ifine-structure intervals inn=7,9, and 10 helium Rydberg statesPhysical Review A, 1999
- Microwave spectroscopy of high-L,n=10 Rydberg states of heliumPhysical Review A, 1992
- Energies and relativistic corrections for the Rydberg states of helium: Variational results and asymptotic analysisPhysical Review A, 1992
- Formation and disappearance rates of metastable muon-αlevels in high-pressure helium targetsPhysical Review A, 1990
- High-resolution uv laser spectroscopy of the1s2sS13→1snp (n=5–79) transitions inHe3andHe4Physical Review A, 1989
- Observation of fine-structure transitions of the helium atom by infrared diode laser spectroscopyJournal of Physics B: Atomic and Molecular Physics, 1982
- Hyperfine Structure of the2P3Level inHe3Physical Review B, 1968