Published November 1995
| Version v1
Journal article
Measurement of two-electron contributions to the ground-state energy of heliumlike ions
Creators
- 1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- 2. Gesellschaft fuer Schwerionenforschung, 64220 Darmstadt (Germany)
Description
We report direct measurements of two-electron contributions to the ground-state energy of high-Z heliumlike ions. The difference in radiative-recombination x-ray energy (i.e., ionization potential of the recombined ion) was measured for bare and hydrogenlike target ions trapped in an electron-beam ion trap for six elements ranging from Z=32 to Z=83. The achieved uncertainties (as small as 1.6 eV) test the second-order many-body contributions to the energy and approach the size of the two-electron (screened) Lamb shift. We also report a measurement of the ground-state ionization potential of heliumlike bismuth relative to heliumlike xenon. All results are in agreement with available theories
Additional details
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 52
- Journal Issue
- 5
- Journal Page Range
- p. 3577-3585.
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27038996
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS; S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ATOMIC IONS; BISMUTH IONS; ELECTRON-ION COLLISIONS; ELECTRONIC STRUCTURE; ENERGY LEVELS; GROUND STATES; HELIUM IONS; IONIZATION POTENTIAL; RECOMBINATION; TRAPS; XENON IONS
- Descriptors DEC
- CHARGED PARTICLES; COLLISIONS; ELECTRON COLLISIONS; ION COLLISIONS; IONS