Published October 2002
| Version v1
Journal article
Ground-state potential of the Ca dimer from Fourier-transform spectroscopy
Creators
- 1. Institut fuer Quantenoptik, Universitaet Hannover, Welfengarten 1, 30167 Hannover (Germany)
Description
The B 1Σu+→X 1Σg+ system in 40Ca2 was studied by Fourier-transform spectroscopy. Transitions to 730 ground-state levels were induced by the blue-green lines of an Ar+ radiation and the single-mode radiation of a frequency-doubled continuous-wave Nd:YAG yttrium aluminum garnet laser. An accurate potential-energy curve, which covers 99.8% of the well depth, was derived directly from the experimentally observed differences between ground-state levels. Long-range analysis led to a revised value of the ground-state dissociation energy, 1102.08(9) cm-1, which differs by more than 7 cm-1 from the previous experimental determination [C. R. Vidal, J. Chem. Phys. 72, 1864 (1980)]. A first estimate of the s-wave scattering length is reported
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 66
- Journal Issue
- 4
- Journal Page Range
- p. 042503-042503.9
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36044842
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ARGON IONS; CALCIUM; DIMERS; DISSOCIATION ENERGY; FOURIER TRANSFORMATION; GROUND STATES; LASER RADIATION; NEODYMIUM LASERS; POTENTIAL ENERGY; POTENTIALS; S WAVES; SCATTERING LENGTHS; SPECTROSCOPY; VISIBLE SPECTRA
- Descriptors DEC
- ALKALINE EARTH METALS; CHARGED PARTICLES; DIMENSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY; ENERGY LEVELS; INTEGRAL TRANSFORMATIONS; IONS; LASERS; LENGTH; METALS; PARTIAL WAVES; RADIATIONS; SOLID STATE LASERS; SPECTRA; TRANSFORMATIONS
Optional Information
- Notes
- (c) 2002 The American Physical Society