Top-loading He-3 Cryostat and Variable Temperature Insert

May 2012

Janis Research Company is proud to announce the development of a top-loading He-3 cryostat with sample in He-3 liquid, as well as a variable temperature insert with sample in He-4 vapor. These cryostats were designed to fit a 32mm room temperature bore magnet at the National High Magnetic Field Laboratory (NHMFL) in Tallahassee, Florida, with a maximum sample space of 17mm.

NHMFL scientists have used these cryostats to study the Fermi surface of alpha-Uranium via quantum oscillations. The shape of the Fermi surface can be reconstructed by measuring the deHaas-vanAlphen oscillations in the magnetization as the field is swept over the sample. These oscillations were measured as a function of angle of the applied field and temperature. Measuring the temperature dependence of the oscillations can determine the effective masses of the electrons, which is a measure of the level of interaction the electrons have with each other and the crystal lattice.

Click image to see larger version of Top loading 3He-VTI system in a 31 Tesla maget at NHMFL-Tallahassee, National High Magnetic Field Laboratory, Janis Research, HE-3-TLSL

Click image to see larger version of Quantum oscillation in alpha-Uranium measured in 31 Tesla magnet system, NHMFL, National High Magnetic Field Laboratory, Janis Research, HE-3-TLSL

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      • Recirculating Cryocooler
      • Cryogen-free He-3 Cryostat, Multi-function
      • Ultra-Stable Temperature Cryostats
      • Zuyu Zhao invited talks - India & China Fall 2014
      • 4-Port Probe Station, interchangeable low frequency probe arms
      • Cryocooler with Recirculating Helium Gas Cools Continuous Transfer Cryostats
      • He-3-TLSUHV-STM for STM with Atomic Resolutions
      • 5-axis Sub-Kelvin He-3 cryostat for ARPES
      • Pulse-tube Cooled Dilution Refrigerator for the Atacama Cosmology Telescope
      • Probe Station with Movable Chuck
      • Miniature Vacuum Chamber for Probe Systems
      • Probe Station Flexible Probe Tips Allow Absorbing Probe Arm Thermal Drift Movement
      • Custom Cryogenic Systems Meet Sub-Kelvin SPM Requirements
      • Janis purchases larger facility - 225 Wildwood Avenue, Woburn
      • SHI-4-2 4 Kelvin Closed Cycle Refrigerator
      • Sub-K ARPES system - base temp 625 mK
      • 3 Year Warranty on Orders Received after June 30, 2012
      • John Brisson, New Janis Board of Directors Member
      • Top loading HE-3 cryostat and VTI for NHMFL
      • Probe station with rotatable magnetic field
      • Manufacturing Facility Expansion
      • Hybrid Low Temperature Cryostat
      • Zephyr Model Air-Cooled Compressor for SHI 10 K Cryocoolers
      • HE-3-SSV-PT-2 Highly Efficient Cryogen Free He-3 Cryostat
      • JACoB Automated Control Unit for DR Gas Handling System
      • 3 Tesla Superconducting Magneto-Optical Micro-Manipulated Probe System
      • Cryogenic Probe Station with Room Temperature Electromagnet
      • JDry-500 has arrived!
      • 4 K closed cycle refrigerator with two-axis optical alignment
      • Cryogen Free Sub-K ARPES System
      • Google Demonstrates Quantum Supremacy
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