Multianvil at the NSLS

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Multi-anvil at the NSLS
Michael Vaughan Liping Wang Jiuhua Chen Baosheng
Li Hélène Couvy Li Li Wei Liu Qiong
Liu Carey Koleda Bill Huebsch Ken Baldwin Shun
Karato Bill Durham Pam Burnley
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Stress as a variable
(1) s Meel
(2)
s Me
(3) s(t) s0sin(2 p f t)      e (t) e0sin(2
p f t - d)
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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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Generate stresses under pressure gt 3GPa
Multianvil apparatus
D-DIA
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• RDA (rotational Drickamer apparatus)
• High P-T (good support, nearly homogeneous)
• Large strain (torsion tests)
• 3. Relatively large sample size (broad range of
  grain-size)

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wadsleyite
After annealing
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Experimental
D-DIA
(Shimomura et al, 1982, Durham et al, 2003, Wang
et al, 2003)
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Measure Stress
s Me el
HP device
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360o
360o
0o
a
b
0o
2q
Olivine deformation at 10GPa
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Technical Developments

• Monochromatic Side Station
• Have completed the construction of an additional
  beamline, within the X17B2 hutch.
• DTcup designed (Weidner, Dobson, Klotz). 500 ton
  press weighs 150 kg. Delivered to the US June
  10, 2007.
• Cell Development see Durham poster
• Rotating Drickamer Apparatus (Yale group) funded
  to build new apparatus by rheology grand
  challenge
• Stress measurement improvement funded through
  rheology grand challenge 10MPa goal
• Q measurement

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Jiuhua Chen
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Esample/EaluminaAalumina/Asample Q-1sample
tan(f)
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Forced oscillation on MgO and Al2O3 T 800 oC P
5GPa Frequency 10-100mHz
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Linearity at small strain
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