Microscope continuous flow cryostat
The Microscope Continuous Flow Cryostat utilizes continuous-flow refrigerant cooling technology and features a two-stage cooling platform. The first stage cools the sample stage, while the second stage cools the radiation shield. The radiation shield surrounds the sample stage, ensuring more stable and uniform sample temperature. Combined with a temperature controller, it allows for precise temperature control at any point within the operating temperature range.
This cryostat requires a supply tube and a self-pressurizing cryogenic storage tank. The refrigerant from the self-pressurizing cryogenic storage tank flows through the supply tube into the cryostat, where it vaporizes to provide cooling, and the gas is then expelled through the outlet. A temperature sensor and heater are installed on the sample stage. The temperature is monitored by a temperature controller, which outputs a specific heating power to maintain the desired temperature. The sample is placed in a vacuum environment, preventing condensation and frost formation on the sample surface throughout the cooling and temperature control process.
Features
- Suitable for use under a microscope
- Cooled using liquid nitrogen or liquid helium
- Top window, with optional bottom window for transmission measurements
- Variety of electrical test leads available: oxygen-free copper enameled wire, low thermal conductivity phosphor bronze cryogenic wire, cryogenic coaxial cable, and cryogenic triaxial cable
- Maximum sample size: 20 x 20 mm (larger samples available upon request)
- Optional pressure reduction device for use with liquid nitrogen, achieving a minimum temperature of 65K
- Optional sample holders available to meet different sample testing requirements
Structure
Parameters
- Temperature Control Range: 80K-500K (liquid nitrogen), 6K-500K (liquid helium)
- Cooling Time: Room temperature to 78K in 45 minutes (liquid nitrogen), room temperature to 5K in 90 minutes (liquid helium)
- Temperature Stability: 50mk (LH101C temperature controller)
- Interlayer Vacuum: Better than 10⁻⁵ Pa
- Evacuation Time: 30 min (related to the pump system)
- Cooling Time: Room temperature to minimum temperature (liquid helium 5K) < 60 min, room temperature to minimum temperature (liquid nitrogen 78K) < 20 min
- Heating Time: Minimum temperature to room temperature < 40 min (liquid helium), minimum temperature to room temperature < 20 min (liquid nitrogen)
- Number of Windows: 1 or 2
- Window Material: Fused silica (other options available)
- Window Diameter: 20mm
- Vacuum Port Interface: KF25
- Temperature Control Interface: 6-pin vacuum connector
- Cryogenic Storage Tank Volume: 10L (liquid nitrogen), 30L (liquid nitrogen), standard 50L (liquid nitrogen, liquid helium), 100L (liquid nitrogen, liquid helium)
DXNCMD Microscope continuous flow cryostat
Features
- Compact, lightweight, and portable design, easily integrated into microscopes and spectrometers
- Automated temperature control
- High stability with virtually no sample vibration
- Convenient sample access
- Compatible with liquid helium or liquid nitrogen, low refrigerant consumption, and fast cooling speed
- High flexibility, operable in any direction, with adjustable sample distance for precise positioning with high-magnification objectives
- Optional closed-cycle liquid helium system for cooling without refrigerant consumption
- Optional accessories include electrical measurement components, optical measurement components, magnetic field components, superconducting magnet components, high-sample stage components, and 3D displacement components.
Parameters
- Cooling time: 20 minutes
- Temperature range: 3.2K-325K, expandable to 500K (optional)
- Temperature stability: 50mk (related to the temperature controller)
- Vibration amplitude: 20nm
- Drift (within 1 hour): ±1-150nm
- Liquid helium consumption: Approximately 0.7 L/h (at 5K)
- Weight: Approximately 3.2 kg
