PMID- 31472666
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20190906
IS  - 1089-7623 (Electronic)
IS  - 0034-6748 (Linking)
VI  - 90
IP  - 8
DP  - 2019 Aug
TI  - Design of a containment apparatus for synchrotron XAS measurements of radioactive 
      fluid samples under high temperatures and pressures.
PG  - 083108
LID - 10.1063/1.5100887 [doi]
AB  - The simple working principles and versatility of the hydrothermal diamond-anvil 
      cell (HDAC) make it highly useful for synchrotron x-ray studies of aqueous and 
      fluid samples at high pressure-temperature (P-T) conditions. However, 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  degrees C and pressures ranging from vapor pressure to 350 MPa.
FAU - Dhakal, Diwash
AU  - Dhakal D
AD  - Department of Physics, Astronomy and Materials Science, Missouri State 
      University, Springfield, Missouri 65897, USA.
FAU - Mayanovic, Robert A
AU  - Mayanovic RA
AD  - Department of Physics, Astronomy and Materials Science, Missouri State 
      University, Springfield, Missouri 65897, USA.
FAU - Baker, Jason L
AU  - Baker JL
AUID- ORCID: 0000000307546519
AD  - Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los 
      Alamos, New Mexico 87545, USA.
FAU - Boukhalfa, Hakim
AU  - Boukhalfa H
AD  - Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los 
      Alamos, New Mexico 87545, USA.
FAU - Xu, Hongwu
AU  - Xu H
AD  - Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los 
      Alamos, New Mexico 87545, USA.
FAU - Sun, Cheng-Jun
AU  - Sun CJ
AD  - X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, 
      USA.
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Rev Sci Instrum
JT  - The Review of scientific instruments
JID - 0405571
SB  - IM
EDAT- 2019/09/02 06:00
MHDA- 2019/09/02 06:01
CRDT- 2019/09/02 06:00
PHST- 2019/09/02 06:00 [entrez]
PHST- 2019/09/02 06:00 [pubmed]
PHST- 2019/09/02 06:01 [medline]
AID - 10.1063/1.5100887 [doi]
PST - ppublish
SO  - Rev Sci Instrum. 2019 Aug;90(8):083108. doi: 10.1063/1.5100887.