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Gas Membrane-Driven Cell for Low-Temp. Applications
Part of the cryoDAC series
[Formerly Cryocell]
Product Description
The Diacell® cryoDAC-Nitro was designed to fit into many other cryostats of bath, top-loading, and closed-cycle types. It is supplied complete with a customised chrome-plated copper mounting block. The gas membrane mechanism drives the cell and may be pressurised by any permanent gas. For low temperature use, however, helium is recommended. At 200 bar, the maximum gas bottle pressure commercially available, helium solidifies at 5.2 K. As the temperature is lowered from room temperature, helium gas contracts rapidly but may still be used to drive a membrane. The GM Controller is fitted with a relief valve to protect against possible loss of coolant. The CryoDAC-Nitro is especially suitable for use with liquid nitrogen cryostats.
One of the problems with cryogenic use of DACs is that the diamond anvils fall off quite easily if they are fixed in with epoxy resins and other glues. Therefore easyLab supplies cryogenic cells with anvils which are soldered to beryllium-copper support plates. The additional expense incurred in using this process is repaid by confidence and reliability in operation.
This cell is 29 mm from front to back (excluding the inlet tubes). The body is 34 mm diameter, and the membrane retaining ring 38 mm diameter. The Diacell® CryoDAC-Nitro membrane is driven with use of the Diacell® GM Controller which contains also a silicon-based pressure sensor and a digital pressure display. Everything needed (valves, lines and couplings) is supplied with the unit, with the exception of the gas cylinder and its regulator head (for helium use a high-pressure reduction head is recommended).
Applications
The Diacell® CryoDAC-Nitro is particularly suitable for optical measurements within liquid nitrogen cryostats.
Technical Specifications
| Cell Material |
AISI 440C |
| Anvil Support Plate |
Beryllium Copper
|
| Pressure Mechanism |
Gas Membrane |
Maximum Pressure
|
50 GPa
|
| Temperature Range |
Low Temperatures |
| Top Angle |
Optical: Conical 52°
|
| Bottom Angle |
Optical: Conical 52°
|
| Lateral Access |
12° of 2θ is accessible |
| Heating |
N/A |
| Cooling |
Via Cryostat
|
| DAC Diameter |
38 mm |
| DAC Height |
29 mm |
| Working Distance to Sample |
10 mm |
| Numerical Aperture |
TBC |
| Interfacing Solution |
TBC |
Maximum pressure is dependent upon the culet size of the anvils. easyLab is committed to its policy of continuous improvement. Specifications may change without notice. easyLab and Diacell are registered trademarks of easyLab Technologies Ltd.
Parameters
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Experimental Techniques
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far-IR |
Fluorescence |
FTIR |
Infrared |
Raman |
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Maximum Pressure
|
1 GPa |
10 GPa |
3.0 GPa |
30 GPa |
50 GPa |
|
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Temperature Range
|
Low Temperatures |
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