XPDF uses bespoke capillaries which interface easily with the beamline sample holders. They come in two main varieties:
Borosilicate Capillaries
Borosilicate is a cheap and easy to work glass which should be used for all cases except those that require temperatures > 500°C.
| Chemical Formula | Si0.798B0.221Al0.023Na0.066K0.006O2 (Schott Duran Data Sheet) |
|---|---|
| Density | 2.23 g·cm-3 |
| Outer Diameter | Inner Diameter | Wall thickness | Length | Volume | filled mass* with ρ = 1 g·cm-3 |
|---|---|---|---|---|---|
| 1.0 mm | 0.78 mm | 0.11 mm | 40 mm | ~ 19 μL | ~ 9.5 mg |
| 1.5 mm | 1.17 mm | 0.165 mm | 40 mm | ~ 43 μL | ~ 21.5 mg |
| 2.0 mm | 1.56 mm | 0.22 mm | 40 mm | ~ 76 μL | ~ 38.0 mg |
Silica Capillaries
Sometimes called "fused quartz" or incorrectly just "quartz", silica has a significantly higher working temperature so can be used for studies > 500°C. We also have some smaller capillaries for very absorbing samples.
| Chemical Formula | SiO2 (Fused Quartz Data Sheet) |
|---|---|
| Density | 2.203 g·cm-3 |
| Outer Diameter | Inner Diameter | Wall thickness | Length | Volume | filled mass* with ρ = 1 g·cm-3 |
|---|---|---|---|---|---|
| 0.4 mm | 0.3 mm | 0.05 mm | 50 mm | ~ 3.5 μL | ~ 1.8 mg |
| 1.0 mm | 0.8 mm | 0.1 mm | 50 mm | ~ 25 μL | ~ 12.5 mg |
| 1.5 mm | 1.3 mm | 0.1 mm | 50 mm | ~ 66 μL | ~ 33 mg |
| 2.5 mm | 2.3 mm | 0.1 mm | 50 mm | ~ 208 μL | ~ 104 mg |
*Assumed packing fraction of 0.5