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Title: Electrostatic levitation facility optimized for neutron diffraction studies of high temperature liquids at a spallation neutron source

Journal Article · · Review of Scientific Instruments
DOI:https://doi.org/10.1063/1.4939194· OSTI ID:1265812
 [1]; ORCiD logo [2];  [3]; ORCiD logo [3];  [4];  [4];  [5];  [6];  [2]; ORCiD logo [2]; ORCiD logo [7];  [4];  [8];  [3]
  1. North Central College, Naperville, IL (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Washington Univ., St. Louis, MO (United States)
  4. Iowa State Univ., Ames, IA (United States)
  5. Iowa State Univ., Ames, IA (United States); Ames Lab., Ames, IA (United States)
  6. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. City Univ., of Hong Kong (China)
  8. Univ. of Tennessee, Knoxville, TN (United States)

Neutron diffraction studies of metallic liquids provide valuable information about inherent topological and chemical ordering on multiple length scales as well as insight into dynamical processes at the level of a few atoms. But, there exist very few facilities in the world that allow such studies to be made of reactive metallic liquids in a containerless environment, and these are designed for use at reactor-based neutron sources. We present an electrostatic levitation facility, NESL (for Neutron ElectroStatic Levitator), which takes advantage of the enhanced capabilities and increased neutron flux available at spallation neutron sources (SNSs). NESL enables high quality elastic and inelastic neutron scattering experiments to be made of reactive metallic and other liquids in the equilibrium and supercooled temperature regime. The apparatus is comprised of a high vacuum chamber, external and internal neutron collimation optics, and a sample exchange mechanism that allows up to 30 samples to be processed between chamber openings. Two heating lasers allow excellent sample temperature homogeneity, even for samples approaching 500 mg, and an automated temperature control system allows isothermal measurements to be conducted for times approaching 2 h in the liquid state, with variations in the average sample temperature of less than 0.5%. Furthermore, to demonstrate the capabilities of the facility for elastic scattering studies of liquids, a high quality total structure factor for Zr64Ni36 measured slightly above the liquidus temperature is presented from experiments conducted on the nanoscale-ordered materials diffractometer (NOMAD) beam line at the SNS after only 30 min of acquisition time for a small sample ( 100 mg).

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; AC02-07CH11358
OSTI ID:
1265812
Alternate ID(s):
OSTI ID: 1235380
Journal Information:
Review of Scientific Instruments, Vol. 87, Issue 1; ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (32)

X-ray diffraction study of undercooled molten silicon journal January 2001
Thermal Evaporation Loss Measurements on Quasicrystal (Ti–Zr–Ni) and Glass Forming (Vit 106 and Vit 106a) Liquids journal February 2015
A structural signature of liquid fragility journal August 2014
Structural evolution and thermophysical properties of ZrxNi100−x metallic liquids and glasses journal December 2014
Contactless investigation on laser-heated oxides by synchrotron radiation journal November 1998
Short range order in amorphous in Ni62Nb38studied by isotopic neutron diffraction journal September 1988
Layering of a liquid metal in contact with a hard wall journal November 1997
A highly modular beamline electrostatic levitation facility, optimized for in situ high-energy x-ray scattering studies of equilibrium and supercooled liquids journal March 2011
Temperature Calibration for Optical Pyrometry in Containerless Systems Using Differential Scanning Calorimetry: Application to $$\mathrm{Cu}_{100-x}\mathrm{Zr}_{x}$$ Cu 100 - x Zr x ( $$x=45$$ x = 45 –50) journal July 2014
Atomic packing and short-to-medium-range order in metallic glasses journal January 2006
Beamline electrostatic levitator for in situ high energy x-ray diffraction studies of levitated solids and liquids journal July 2005
Ordered Liquid Aluminum at the Interface with Sapphire journal October 2005
Compact electrostatic levitator for diffraction measurements with a two axis diffractometer and a laboratory x-ray source journal February 2007
Medium range order in Zr-noble metal eutectic liquids journal December 2012
A new criterion for predicting the glass-forming ability of bulk metallic glasses journal May 2009
Extended x‐ray‐absorption fine structure studies of levitated undercooled metallic melts journal October 1996
Probing the structure of a liquid metal during vitrification journal April 2015
Short- and medium-range order in Zr 80 Pt 20 liquids journal May 2011
Does an icosahedral short-range order prevail in glass-forming Zr-Cu melts? journal December 2012
Structure and dynamics of liquid Ni 36 Zr 64 studied by neutron scattering journal February 2009
Structural studies of disordered materials using high-energy x-ray diffraction from ambient to extreme conditions journal November 2007
Thermal expansion measurements by x-ray scattering and breakdown of Ehrenfest's relation in alloy liquids journal May 2014
First X-Ray Scattering Studies on Electrostatically Levitated Metallic Liquids: Demonstrated Influence of Local Icosahedral Order on the Nucleation Barrier journal May 2003
Melting behavior of levitated Y2O3 journal October 2003
Electromagnetic levitation apparatus for investigations of the phase selection in undercooled melts by energy-dispersive x-ray diffraction journal January 2000
Neutron scattering experiments on liquid droplets using electrostatic levitation journal March 2011
Structure of metallic glasses journal January 1995
Partial correlations in Ni60Nb40 metallic glass journal November 1981
Gain-scheduled control of an electrostatic levitator journal February 2003
Improved measures of quality for the atomic pair distribution function journal January 2003
Structure of metallic glasses journal April 1974
Structure of Metallic Glasses book January 1985

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A uniaxial load frame for in situ neutron studies of stress-induced changes in cementitious materials and related systems journal September 2018