High precision saturation spectroscopy of 127I2 with argon lasers at 5 145 Å and 5 017 Å : I — Main resonances
- 1 January 1981
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 42 (10) , 1393-1411
- https://doi.org/10.1051/jphys:0198100420100139300
Abstract
We present results on the hyperfine spectroscopy of 127I 2 obtained with argon lasers. We describe our saturated absorption or dispersion spectrometer and we discuss the pressure dependence of the saturation line shapes. At 5 145 Å we have measured the frequency differences between the main resonances of the 43-0 P(13) and R(15) hyperfine manifolds with a 200 Hz standard deviation and obtained a theoretical fit with a standard deviation of the order of 1.5 kHz. The two sets of hyperfine constants for P(13), and R(15) are consistent. The results of Foth and Spieweck are confirmed for the 58-1 R(98) line at 5 145 Å and we make a first determination of the constants d' and δ' of the 62-0 R(26) line at 5 017 Å. The variation of these constants near the dissociation limit is interpreted as a demonstration of a mixing of u and g states. The stability of argon lasers slaved to iodine peaks is illustrated and their metrological applications are outlinedKeywords
This publication has 20 references indexed in Scilit:
- Hyperfine structure of the R(98), 58-1 line of 127I2 at 514.5 nmChemical Physics Letters, 1979
- Ab InitioCalculation of Hyperfine and Magnetic Parameters in theStatePhysical Review Letters, 1979
- Hyperfine structure in Iodine at the 612-nm and 640-nm helium-neon laser wavelengthsOptics Communications, 1978
- Effective hyperfine Hamiltonian in homonuclear diatomic molecules. Application to the B state of molecular iodineJournal de Physique, 1978
- Nuclear hyperfine splittings in the B-X electronic band system of 127I2Chemical Physics Letters, 1976
- Observation of Magnetic Octupole and Scalar Spin-Spin Interactions inUsing Laser SpectroscopyPhysical Review Letters, 1975
- Saturated absorption experiments using a free running CW dye laserOptics Communications, 1975
- ABSORPTION PROFILES AND INVERTED LAMB DIPS OF I2 VAPOR AT 633 nm AS STUDIED WITH A He–Ne LASERApplied Physics Letters, 1970
- Laser-Induced Fluorescence in a Molecular Beam of IodinePhysical Review Letters, 1968
- SATURATED NEON ABSORPTION INSIDE A 6238-Å LASERApplied Physics Letters, 1967