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In situ pressure controlled liquid nitrogen/liquid helium immersion type low-temperature device
Model: ESLT-2206G-SPR.This device is an optical low-temperature testing device for a liquid nitrogen/compatible liquid helium immersion type diamond anvil press. It uses a continuous flow of low-temperature medium to inject into the chamber, and optical observation and measurement are carried out through two layers of low-temperature active sealing windows on both sides. The internal samples of the press are controlled by a specific sample chamber and in-situ pressurization. Based on the matching of specific DAC types, this system is compatible with optical measurement experiments at a certain working distance.
Product advantages:
The sample is in a completely vibration free environment of immersion type;
The combination of pressure control method with diamond anvil press is convenient, and the immersion design facilitates the in-situ encapsulation of liquid helium/liquid nitrogen as the pressure transmission medium between the anvil;
The immersion type design has a large built-in space and is compatible with all types of diamond anvil presses, even small PE presses;
Matching optical windows facilitates observation of sample morphology, and window angles can be customized.
The standard design includes:
A set of T85 oil-free shock-absorbing molecular pump unit;
One LS335 liquid nitrogen/compatible liquid helium dual channel temperature controller;
One domestically produced liquid nitrogen self pressurized adjustable flow system (including one adjustable flow infusion tube);
One customized liquid nitrogen/compatible liquid helium immersion low-temperature thermostat;
L can customize a set of pressure tools, such as a manual rotating pressure sample rod that is compatible with S-type or SPR type presses (SPR25/SPR17.5 equivalent DAC);
There are 8 electrical test wires and 2 non magnetic field thermometers DT640 (in pin form; one is used to monitor the placement of the press with a cold table and heater, and the other is reserved for backup).
*The device does not include imported liquid helium tanks and liquid helium media. In the later stage, an in-situ pressure control method with a gas distribution membrane can also be added (it is recommended that users reserve functional space in advance when confirming the plan through communication).
*In the future, an additional pressure reducing device can be added at the outlet of the device, and the price is negotiable. The nitrogen/helium flow introduced can be subjected to short-term and continuous pressure reduction and cooling, with liquid nitrogen at around 65K and liquid helium at around 3.2K.
