CS204-DMX-20
The CS204F-DMX-20 opens up a wide range of capabilities never before possible with a closed cycle cryocooler. The CS204F-DMX-20 uses a helium exchange gas to decouple the sample from the cold tip of the DE-204 cryocooler. This prevents almost all vibration from being transmitted to the sample. Scientists have demonstrated vibration levels as low as 3-5 nm with the CS204F-DMX-20.
Because the exchange gas is inherently less efficient than cooling by conduction, the base temperature of the sample will be 1-2 K higher than the cryocooler. Additionally the DMX-20 interface requires a downward orientation of the cold tip to facilitate convective cooling of the exchange gas.
The CS204F-DMX-20 is ideally suited for Mössbauer experiments and vibrationally sensitive transport measurements. For optical microscopy applications, such as Micro Raman, Micro PL, and quantum dots, the CS204F-DMX-20-OM is preferred.
Applications
Mössbauer
Low vibration optical experiments
Quantum dot
Photoluminescence
Micro-Raman
Micro-photoluminescence (Mirco-PL)
Micro-spectroscopy
Magneto Optical Kerr Effect (MOKE)
Nanoscience
Ellipsometry
Features
Typical Configuration
Options & Upgrades
Ultra low vibrations (3-5 nm)
Pop-off optical block for easy in-situ sample change
Beryllium and Kapton windows available for Mössbauer experiments
Large, clear view optical windows (1.25 in.)
Large sample viewing angle for optical collection (F/1.4)
Cold tip down orientation
Fully customizable
2 helium hoses
DMX-20 ultra low vibration interface
Aluminum vacuum shroud for optical and electrical experiments with 4 window ports on a pop-off optical block
Nickel plated OFHC copper radiation shield
2 high purity quartz windows
Instrumentation for temperature measurement and control:
10 pin hermetic feedthrough
50 ohm thermofoil heater
Silicon diode sensor curve matched to (± 0.5 K) for control
Calibrated silicon diode sensor (±12 mK) with 4 in. free length for accurate sample measurement
Wiring for electrical experiments:
10 pin feedthrough
4 copper wires
Sample holder for optical and electrical experiments
Temperature controller
4 K cold head (0.2 W @ 4.2 K)
5.5 K cold head (3 W @ 10 K)
Turbo upgrade for faster cooldown times
High temperature interface (not required with the DMX-20 interface, but helpful for high temperature performance)
Custom temperature sensor configuration (please contact our sales staff)
Custom wiring configurations (please contact our sales staff)
Beryllium windows for Mössbauer experiments
Kapton windows for Mössbauer experiments
Window material upgrades (custom materials available)
Sample holder upgrades (custom sample holders available)