...
| Sample Name | H2O | |||
|---|---|---|---|---|
| Desired Start P | 26 GPa | |||
| Contents: | Sample | Coupler materials | Coupler thickness (µm) | Coupler hole diameter (µm) |
| 1. | H2O | Cu | 5 | n/a |
| Diamonds: | Culet diameter(s) & style(s) | Cylinder Dia. Thickness | Piston Dia. Thickness | Diamond Types |
| 300 µm | 2.128 mm | 1.669 mm | BA 1a (piston)+ std 1a | |
| Gasket: | Material | Initial Thickness | Regular gasket: hole diameter | |
| Re | 45 µm | 150 µm | ||
| Cell Configuration: | Downstream Side | Downstream Seat | Upstream Seat e.g. WC std... | Standard Rotation |
| Piston | BA | cBN | See photo | |
| Cell Checks: | Screw Heads protruding? | Set screws disengaged? | Imperial or Metric Screws? | Offline P Change? |
| N | N | Metric | ||
| Current Pressure (GPa): | Diffraction Best value | Ruby | Diamond Edge | Sample Raman |
| 28 GPa (Cu EoS) | 26 GPa | |||
Photomicrographs: | View(s) from cylinder side (with mark up, or note direction of mark otherwise) INSERT PHOTO OF CELL FROM MICROSCOPE, AND PHOTO OF DAC SHOWING ORIENTATION | |||
| ||||
| View(s) from piston side (with mark up, or note direction of mark otherwise) INSERT PHOTO OF CELL FROM MICROSCOPE, AND PHOTO OF DAC SHOWING ORIENTATION | ||||
| ||||
Interference Fringes | Chamber (culet-to-culet) | Downstream Medium(s) | Upstream Medium(s) | Index of Refraction |
| 18.97 um | 19.24 um | 1.66 | ||
XRD Screening 499px | Data | |||
Free space (some Cu too)
| ||||
Grid | ||||
Raman Scattering | Raman Spectra. | |||
Phase Diagrams | Any Relevant Phase Diagrams & References | |||
| Beamline Analysis | ||||
| Postscreening | aligned with respect to upstream camera image in elog (no downstream camera image available)→ flipped the cell (keeping the same orientation) c2c nd=30.9 c2 coupler cyl nd=9.8 c2 coupler pis nd=18.8 30.9/1.66 - 9.8/1.66 - 18.8/1.66= 1 um ...but coupler was supposed to be 5 um? Possibly deformed and measuring in different positions. But at least coupler is suspended in this case. Tried to measure directly opposite final point on the cyl and got nothing or large fringes. So probably not well suspended in centre i.e. 30.9/1.66 -18.8/1.66=7 um so again, maybe a few microns of space round the center, with coupler close to cylinder. 30.9/1.66 = 18.6 agrees with above finding. | |||
| Comment | Pressure: 25 GPa from Ice VII, 28 GPa from Cu foil | |||
...