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Author Dolgaev, Sergei I. ♦ Kirichenko, N. A. ♦ Lubnin, Evgenii N. ♦ Simakin, Aleksandr V. ♦ Shafeev, Georgii A. ♦ Kulevskii, L. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ AQUEOUS SOLUTIONS ♦ CHROMIUM IONS ♦ COPPER ♦ DIAMONDS ♦ DISSOLUTION ♦ ENERGY-LOSS SPECTROSCOPY ♦ HOLMIUM ♦ HOLMIUM IONS ♦ LASER RADIATION ♦ LIQUIDS ♦ METAL VAPOR LASERS ♦ SUPERCRITICAL STATE ♦ SUSPENSIONS ♦ X-RAY PHOTOELECTRON SPECTROSCOPY ♦ YTTERBIUM IONS ♦ CARBON ♦ CHARGED PARTICLES ♦ DISPERSIONS ♦ ELECTROMAGNETIC RADIATION ♦ ELECTRON SPECTROSCOPY ♦ ELEMENTS ♦ FLUIDS ♦ GAS LASERS ♦ HOMOGENEOUS MIXTURES ♦ IONS ♦ LASERS ♦ METALS ♦ MINERALS ♦ MIXTURES ♦ NONMETALS ♦ PHOTOELECTRON SPECTROSCOPY ♦ RADIATIONS ♦ RARE EARTHS ♦ SOLUTIONS ♦ SPECTROSCOPY ♦ TRANSITION ELEMENTS
Abstract The effect of pulsed radiation from a 2.92-{mu}m, 130-ns Cr{sup 3+}:Yb{sup 3+}:Ho{sup 3+}:YSGG holmium laser and a 510-nm, 20-ns copper vapour laser on an aqueous suspension of ultradispersed diamond is studied. X-ray photoelectron spectroscopy and electron energy loss spectroscopy revealed that exposure of the suspension to holmium laser radiation reduces the concentration of nondiamond carbon impurity in it. This is due to the dissolution of carbon impurity in supercritical aqueous solution, caused by radiation absorption. Dissolution of the nondiamond fraction may serve as an indicator of the solution being in the supercritical state as a result of laser irradiation of liquids. This process can be used for efficient purification of ultradispersed diamonds. (laser applications and other topics in quantum electronics)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2004-09-30
Publisher Place United States
Journal Quantum Electronics
Volume Number 34
Issue Number 9


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