Multianvil at the NSLS

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Multi-anvil at the NSLS
Michael Vaughan Liping Wang Jiuhua Chen Baosheng
Li Carey Koleda Bill Huebsch Ken Baldwin Chris
Young
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Personnel

• Michael Vaughan
• Liping Wang
• Jiuhua Chen
• Baosheng Li
• Carey Koleda
• Bill Huebsch
• Ken Baldwin
• Chris Young

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Cost breakdown

• Stony Brook University 50,000
• CHiPR 160,000
• NSLS 1,440,000

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High Pressure x-ray Studies
Details of SAM 85
High P High T large volume Energy dispersive
diffraction Angle dispersive diffraction Sample
length Ultrasonic interferrometry
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Deformation-DIA

• Deformation device to operate to 12 GPa and 2000K
• Measure stress, strain rate, up to 50 strain
• First device built by Livermore (Durham)

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Rotational Drickamer Cell, Yale group
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Two detector strain measure
etot ev eh etot(111) ?? S44/2etot(100)
?? (S11 S12)
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Li Li et al, 2004
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Li Li, 2003
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Stress state in NaCl
Max. T500 ?C
Stress, kbar
RT
Kung et al, 2004
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Study of Molten Materials under High Pressures
and Temperatures

• Opportunities at
• Synchrotron X-ray Beamlines

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Bulk Properties of Melts

• Viscosity
• Density
• Acoustic Velocity

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Jiuhua Chen
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open press
1.7 GPa
4.0 GPa
4.0 GPa 1300oC
Jiuhua Chen
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Ultrasonic Velocity Measurements
Buffer Rod
Sample
Transducer

• Reflection/Transmission Interferometry
• Resonance Ultrasonic Spectroscopy
• GHz Ultrasonic Interferometry
• Precision 10-5

Baosheng Li
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Input Signal in Frequency and Time Domain
Baosheng Li
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End of Run
3 GPa 400C
Baosheng Li
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Solid
Melts
Baosheng Li
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Bi (III)
Solids
Melts
Bi (I)
Baosheng Li
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Material Sciences at X17B2 of NSLS

• Phase equilibria at high P and T (e.g., Si, Ge,
  Zr, Hf)
• Thermal equations of state (e.g., Si, Ge, Zr, Hf,
  Os, U)
• Reaction kinetics (e.g., Si melts diamond
  SiC)
• Strength of nano materials (Si, SiC, diamond)
• Rheology at high P and T (e.g., Ta)

Phase diagram of the elemental Zr
Voronin et al. (2003)
Zhang et al. (2004)