Liquid Helium and Liquid Nitrogen Cooling Stages

To better understand electronic and electric materials, cryogenic or temperature-dependent studies are monitored using helium and liquid nitrogen stages.

Features:

• Stabilization of beam-sensitive materials under high beam currents
• Low-temperature phases can be analyzed
• Improved spectroscopy and imaging, mainly for cathodoluminescence (CL)

Table No.1: Liquid Helium Cooling Stage

Table 1. Source: Gatan Inc.

Liquid Nitrogen Cooling Stages C1001, C1002, C1003

• Nitrogen gas cools stages to less than −185 °C
• Straightforward installation/removal permits the utilization of standard SEM stage
• Quick cool down and stable temperatures are ensured by efficient thermal design
• Higher upper-temperature options allow more flexibility in experiments
• Vibration due to boiling of LN₂ is removed by the external liquid nitrogen heat exchanger
• High-precision control through temperature sensor and integral heater 

Liquid Helium Cooling Stages CF302, CF302M

• CF302M — a helium-cooled stage module — attaches to the SEM goniometer and requires more care than the CF302
• Complete replacement SEM stage and door assembly with X, Y, and Z axis manual micrometers
• Exclusively engineered vibration and low drift, while reducing the consumption of liquid helium
• Depending on the configuration and intended use, an optional radiation shield can be included
• Complete system includes top fitting with bladder and valve, flexible transfer tube storage vessel, gas flow pump, gas flow controller, and digital temperature controller 

Dual Fuel Option

• Works by forcing cold nitrogen gas through the circuit that is similar to the successful C1002 product
• Allows operation of liquid helium cold stages with both helium and nitrogen

Accessories — Anti-Contaminators

• Anti-contaminators C1005, C1006, or C1007 are included as accessories

Table No.2: Liquid Nitrogen Cooling Stage

Table 2. Source: Gatan Inc.