Laser purification of ultradispersed diamond in aqueous solution

Journal Article · Thu Sep 30 00:00:00 EDT 2004 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2004V034N09ABEH002882· OSTI ID:21470601

Dolgaev, Sergei I; Kirichenko, N A; Lubnin, Evgenii N; Simakin, Aleksandr V; Shafeev, Georgii A ^[1]; Kulevskii, L A ^[2]

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1. Scientific Center for Wave Studies, A.M.Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

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)

• OSTI ID: 21470601
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 34, Issue 9; Other Information: DOI: 10.1070/QE2004v034n09ABEH002882; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 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