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Title: Synchrotron x-ray spectroscopy of Eu/HNO{sub 3} aqueous solutions at high temperatures and pressures and Nb-bearing silicate melt phases coexisting with hydrothermal fluids using a modified hydrothermal diamond anvil cell and rail assembly

Abstract

A modified hydrothermal diamond anvil cell (HDAC) rail assembly has been constructed for making synchrotron x-ray absorption spectroscopy, x-ray fluorescence, and x-ray mapping measurements on fluids or solid phases in contact with hydrothermal fluids up to {approx}900 deg. C and 700 MPa. The diamond anvils of the HDAC are modified by laser milling grooves or holes, for the reduction of attenuation of incident and fluorescent x rays and sample cavities. The modified HDAC rail assembly has flexibility in design for measurement of light elements at low concentrations or heavy elements at trace levels in the sample and the capability to probe minute individual phases of a multiphase fluid-based system using focused x-ray microbeam. The supporting rail allows for uniform translation of the HDAC, rotation and tilt stages, and a focusing mirror, which is used to illuminate the sample for visual observation using a microscope, relative to the direction of the incident x-ray beam. A structure study of Eu(III) aqua ion behavior in high-temperature aqueous solutions and a study of Nb partitioning and coordination in a silicate melt in contact with a hydrothermal fluid are described as applications utilizing the modified HDAC rail assembly.

Authors:
; ; ;  [1];  [2];  [3];  [3]
  1. Department of Physics, Astronomy and Materials Science, Missouri State University, Springfield, Missouri 65897 (United States)
  2. (Canada)
  3. (United States)
Publication Date:
OSTI Identifier:
20953450
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 78; Journal Issue: 5; Other Information: DOI: 10.1063/1.2737748; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION SPECTROSCOPY; AQUEOUS SOLUTIONS; CAVITIES; DIAMONDS; EUROPIUM; FLUIDS; FLUORESCENCE; NITRIC ACID; PRESSURE RANGE MEGA PA 100-1000; SILICATES; SYNCHROTRONS; TEMPERATURE RANGE 0400-1000 K; X RADIATION; X-RAY FLUORESCENCE ANALYSIS; X-RAY SPECTRA; X-RAY SPECTROSCOPY

Citation Formats

Mayanovic, Robert A., Anderson, Alan J., Bassett, William A., Chou, I-Ming, Department of Earth Sciences, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, and MS 954, U.S. Geological Survey, Reston, Virginia 20192. Synchrotron x-ray spectroscopy of Eu/HNO{sub 3} aqueous solutions at high temperatures and pressures and Nb-bearing silicate melt phases coexisting with hydrothermal fluids using a modified hydrothermal diamond anvil cell and rail assembly. United States: N. p., 2007. Web. doi:10.1063/1.2737748.
Mayanovic, Robert A., Anderson, Alan J., Bassett, William A., Chou, I-Ming, Department of Earth Sciences, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, & MS 954, U.S. Geological Survey, Reston, Virginia 20192. Synchrotron x-ray spectroscopy of Eu/HNO{sub 3} aqueous solutions at high temperatures and pressures and Nb-bearing silicate melt phases coexisting with hydrothermal fluids using a modified hydrothermal diamond anvil cell and rail assembly. United States. doi:10.1063/1.2737748.
Mayanovic, Robert A., Anderson, Alan J., Bassett, William A., Chou, I-Ming, Department of Earth Sciences, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853, and MS 954, U.S. Geological Survey, Reston, Virginia 20192. Tue . "Synchrotron x-ray spectroscopy of Eu/HNO{sub 3} aqueous solutions at high temperatures and pressures and Nb-bearing silicate melt phases coexisting with hydrothermal fluids using a modified hydrothermal diamond anvil cell and rail assembly". United States. doi:10.1063/1.2737748.
@article{osti_20953450,
title = {Synchrotron x-ray spectroscopy of Eu/HNO{sub 3} aqueous solutions at high temperatures and pressures and Nb-bearing silicate melt phases coexisting with hydrothermal fluids using a modified hydrothermal diamond anvil cell and rail assembly},
author = {Mayanovic, Robert A. and Anderson, Alan J. and Bassett, William A. and Chou, I-Ming and Department of Earth Sciences, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5 and Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853 and MS 954, U.S. Geological Survey, Reston, Virginia 20192},
abstractNote = {A modified hydrothermal diamond anvil cell (HDAC) rail assembly has been constructed for making synchrotron x-ray absorption spectroscopy, x-ray fluorescence, and x-ray mapping measurements on fluids or solid phases in contact with hydrothermal fluids up to {approx}900 deg. C and 700 MPa. The diamond anvils of the HDAC are modified by laser milling grooves or holes, for the reduction of attenuation of incident and fluorescent x rays and sample cavities. The modified HDAC rail assembly has flexibility in design for measurement of light elements at low concentrations or heavy elements at trace levels in the sample and the capability to probe minute individual phases of a multiphase fluid-based system using focused x-ray microbeam. The supporting rail allows for uniform translation of the HDAC, rotation and tilt stages, and a focusing mirror, which is used to illuminate the sample for visual observation using a microscope, relative to the direction of the incident x-ray beam. A structure study of Eu(III) aqua ion behavior in high-temperature aqueous solutions and a study of Nb partitioning and coordination in a silicate melt in contact with a hydrothermal fluid are described as applications utilizing the modified HDAC rail assembly.},
doi = {10.1063/1.2737748},
journal = {Review of Scientific Instruments},
number = 5,
volume = 78,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}