Isotope shifts and hyperfine structure of the Fe I 372-nm resonance line
- Institut de Physique Nucleaire, Atomique et de Spectroscopie, Universite de Liege, 4000 Liege (Belgium)
- Institut fuer Optik, Information und Photonik, Universitaet Erlangen-Nuernberg, 91058 Erlangen (Germany)
We report measurements of the isotope shifts of the 3d{sup 6}4s{sup 2} a {sup 5}D{sub 4}-3d{sup 6}4s4p z {sup 5}F{sub 5}{sup o} Fe I resonance line at 372 nm between all four stable isotopes {sup 54}Fe, {sup 56}Fe, {sup 57}Fe, and {sup 58}Fe, as well as the complete hyperfine structure of that line for {sup 57}Fe, the only stable isotope having a nonzero nuclear spin. The field and specific mass shift coefficients of the transition have been derived from the data, as well as the experimental value for the hyperfine structure magnetic dipole coupling constant A of the excited state of the transition in {sup 57}Fe: A(3d{sup 6}4s4p z {sup 5}F{sub 5}{sup o})=81.69(86) MHz. The measurements were carried out by means of high-resolution Doppler-free laser saturated absorption spectroscopy in a Fe-Ar hollow cathode discharge cell using both natural and enriched iron samples. The measured isotope shifts and hyperfine constants are reported with uncertainties at the percent level.
- OSTI ID:
- 21352338
- Journal Information:
- Physical Review. A, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevA.80.062508; (c) 2009 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ABSORPTION SPECTROSCOPY
COUPLING
COUPLING CONSTANTS
DOPPLER EFFECT
EXCITED STATES
HOLLOW CATHODES
HYPERFINE STRUCTURE
IRON 54
IRON 56
IRON 57
IRON 58
LASERS
MAGNETIC DIPOLES
MHZ RANGE
RESOLUTION
RESONANCE
SPECTRAL SHIFT
SPIN
ULTRAVIOLET SPECTRA
ANGULAR MOMENTUM
CATHODES
DIPOLES
ELECTRODES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FREQUENCY RANGE
INTERMEDIATE MASS NUCLEI
IRON ISOTOPES
ISOTOPES
MULTIPOLES
NUCLEI
PARTICLE PROPERTIES
SPECTRA
SPECTROSCOPY
STABLE ISOTOPES