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Title: Design of a containment apparatus for synchrotron XAS measurements of radioactive fluid samples under high temperatures and pressures

Abstract

The simple working principles and versatility of the hydrothermal diamond-anvil cell (HDAC) make it signifcantly useful for synchrotron x-ray studies of aqueous and fluid samples at high pressure-temperature (P-T) conditions. Yet, safety concerns need to be overcome in order to use the HDAC for synchrotron studies of aqueous radioactive samples at high temperatures and pressures. For accomplishment of such hydrothermal experiments of radioactive materials at synchrotron beamlines, the samples are required to be enclosed in a containment system employing three independent layers of airtight sealing at some synchrotron facilities while enabling access to the sample using several experimental probes, including incoming and outgoing x-rays. In this article, we report the design and implementation of a complete radiological safety enclosure system for an HDAC specialized for high P-T x-ray absorption spectroscopy (XAS) measurements of aqueous solutions containing the actinides at synchrotron beamlines. The enclosure system was successfully tested for XAS experiments using the HDAC with aqueous samples containing depleted uranium at temperatures ranging from 25 to 500 °C and pressures ranging from vapor pressure to 350 MPa.

Authors:
 [1];  [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [3]
  1. Missouri State Univ., Springfield, MO (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
OSTI Identifier:
1565868
Alternate Identifier(s):
OSTI ID: 1567963
Report Number(s):
LA-UR-19-23291
Journal ID: ISSN 0034-6748
Grant/Contract Number:  
89233218CNA000001; AC02-06CH11357; 20180007DR
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 90; Journal Issue: 8; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Dhakal, Diwash, Mayanovic, Robert, Baker, Jason Lee, Boukhalfa, Hakim, Xu, Hongwu, and Sun, Cheng-Jun. Design of a containment apparatus for synchrotron XAS measurements of radioactive fluid samples under high temperatures and pressures. United States: N. p., 2019. Web. doi:10.1063/1.5100887.
Dhakal, Diwash, Mayanovic, Robert, Baker, Jason Lee, Boukhalfa, Hakim, Xu, Hongwu, & Sun, Cheng-Jun. Design of a containment apparatus for synchrotron XAS measurements of radioactive fluid samples under high temperatures and pressures. United States. doi:10.1063/1.5100887.
Dhakal, Diwash, Mayanovic, Robert, Baker, Jason Lee, Boukhalfa, Hakim, Xu, Hongwu, and Sun, Cheng-Jun. Wed . "Design of a containment apparatus for synchrotron XAS measurements of radioactive fluid samples under high temperatures and pressures". United States. doi:10.1063/1.5100887.
@article{osti_1565868,
title = {Design of a containment apparatus for synchrotron XAS measurements of radioactive fluid samples under high temperatures and pressures},
author = {Dhakal, Diwash and Mayanovic, Robert and Baker, Jason Lee and Boukhalfa, Hakim and Xu, Hongwu and Sun, Cheng-Jun},
abstractNote = {The simple working principles and versatility of the hydrothermal diamond-anvil cell (HDAC) make it signifcantly useful for synchrotron x-ray studies of aqueous and fluid samples at high pressure-temperature (P-T) conditions. Yet, safety concerns need to be overcome in order to use the HDAC for synchrotron studies of aqueous radioactive samples at high temperatures and pressures. For accomplishment of such hydrothermal experiments of radioactive materials at synchrotron beamlines, the samples are required to be enclosed in a containment system employing three independent layers of airtight sealing at some synchrotron facilities while enabling access to the sample using several experimental probes, including incoming and outgoing x-rays. In this article, we report the design and implementation of a complete radiological safety enclosure system for an HDAC specialized for high P-T x-ray absorption spectroscopy (XAS) measurements of aqueous solutions containing the actinides at synchrotron beamlines. The enclosure system was successfully tested for XAS experiments using the HDAC with aqueous samples containing depleted uranium at temperatures ranging from 25 to 500 °C and pressures ranging from vapor pressure to 350 MPa.},
doi = {10.1063/1.5100887},
journal = {Review of Scientific Instruments},
number = 8,
volume = 90,
place = {United States},
year = {2019},
month = {8}
}

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