SPECIALS
Perforated anvils:
Diamond backing plates have the following advantages:
- Substantial reduction in background for all types of radiation (IR, visible, UV or x-rays).
- Substantial reduction in the interfering "red" light fluorescing from diamonds at P>100 GPa.
- Substantial savings in price duo to small anvil weight (W ~ 0.02 .C)
Holes are laser-drilled in the form of a truncated cone. The base diameters are to fit the dimensions/apertures of the carbide backing plates.
Parameters can be made according to your requirements.
Partially perforated anvils from the table side:
Partially perforated anvils from the table side have the following advantage:
- Substantial reduction in background for all types of radiation (IR, visible, UV or x-rays).
Parameters can be made according to your requirements.
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Example 1:
=> 12 to 15 GPa |
Partially perforated anvils from the culet side:
Partially perforated anvils from the table side have the following advantage:
- Substantial increase of sample volume is made possible.
Parameters can be made according to your requirements.
Perforated anvils pictures:
| Perforated anvil | |
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| Focus on hole at the table side, overview | Focus on hole at the culet side |
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| Focus on blind hole sideways | Focus on hole end at the culet side, overview |
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| Partially perforated anvil from the table side | |
|---|---|
| Focus on blind hole entrance at the table side |
Focus on blind hole end at the culet side |
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| Focus on blind hole sideways | Focus on blind hole end at the culet side, overview |
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| Partially perforated anvil form the culet side culet: 0.50 mm, perforation diameter: 0.20 mm, depth of perforation: 0.20 mm |
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| 40x magnification | 200x magnification |
| Topview, focussed on top of culet | Topview, focussed on top of culet |
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| Topview, focussed on bottom of perforation |
Topview, focussed on bottom of perforation |
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| Bottomview (=through table), focussed on bottom of perforation |
Bottomview (=through table), focussed on bottom of perforation |
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| Partially perforated anvil form the culet side culet: 0.30 mm, perforation diameter: 0.10 mm, depth of perforation: 0.025 mm |
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| 40x magnification | 200x magnification |
| Topview, focussed on top of culet | Topview, focussed on top of culet |
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| Topview, focussed on bottom of perforation |
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| Bottomview (=through table), focussed on bottom of perforation |
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Publications:
A perforated diamond anvil cell for high-energy x-ray diffraction of liquids and amorphous solids at high pressure. (Published online: 29 March 2010, Review of sicentific instruments 81, 035110 (2010))
Emmanuel Soignard, Chris J. Benmore, and Jeffery L. Yarger
The DAC presented in this article is designed to study amporphous materials at high pressure using high-energy x-ray scattering (>60 keV) using laser-perforated diamonds. A small diameter perforation maintains structural integrity and has allowed us to reach pressures > 50 GPa, while dramatically decreasing the intensity of the x-ray diffraction background (primarily Compton scattering) when compared to studies using solid diamonds. This cell design allows us for the first time measurement of x-ray scattering from light (low Z) amporhous materials. Here, we present data for two examples using the described DAC with one and two perforated diamond geometries for the high-pressure strucural studies of SiO2 glass and B2O3 glass.
Please click on the pdf (732 KB) to read this publication.