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Author Negriyko, Anatolii M. ♦ Boyko, Oleksei V. ♦ Kachalova, Nataliya M. ♦ Khodakovskii, Vladimir M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ATOMIC AND MOLECULAR PHYSICS ♦ ACCURACY ♦ FLUORESCENCE ♦ FREQUENCY CONTROL ♦ HELIUM-NEON LASERS ♦ HYPERFINE STRUCTURE ♦ IMPURITIES ♦ IODINE ♦ IODINE 127 ♦ IODINE 129 ♦ LASER RADIATION ♦ BETA DECAY RADIOISOTOPES ♦ BETA-MINUS DECAY RADIOISOTOPES ♦ CONTROL ♦ ELECTROMAGNETIC RADIATION ♦ ELEMENTS ♦ EMISSION ♦ GAS LASERS ♦ HALOGENS ♦ INTERMEDIATE MASS NUCLEI ♦ INTERNAL CONVERSION RADIOISOTOPES ♦ IODINE ISOTOPES ♦ ISOTOPES ♦ LASERS ♦ LUMINESCENCE ♦ NONMETALS ♦ NUCLEI ♦ ODD-EVEN NUCLEI ♦ PHOTON EMISSION ♦ RADIATIONS ♦ RADIOISOTOPES ♦ STABLE ISOTOPES ♦ YEARS LIVING RADIOISOTOPES
Abstract The radiation frequency of a He - Ne/{sup 127}I{sub 2} laser stabilised to the hyperfine structure component of molecular iodine exhibits shifts caused by the presence of impurities in the iodine cell. The specific effect of the {sup 129}I impurity on the radiation frequency of a stabilised laser is considered. It is shown that even for a 0.25 % concentration of {sup 129}I, the frequency shift in a He - Ne/{sup 127}I{sub 2} laser caused by this isotope plays a decisive role. To exclude the possible effect of other iodine isotopes on the accuracy of reproducibility of the frequency of metrological lasers, it is expedient to carry out the laser fluorescence test of the cells to check for the presence of heteroisotopic molecular iodine impurity. (control of laser radiation parameters)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2004-05-31
Publisher Place United States
Journal Quantum Electronics
Volume Number 34
Issue Number 5


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