< 300 mK familySample-in-vacuum 3He refrigerator - HelioxVT
The Optistat range of cryostats are designed to meet the needs of the most demanding spectroscopy applications. Excellent optical and electrical access, wide temperature ranges, compact design and best-in-class cryogenic performance are matched to an extensive range of different options to ensure there is a cryostat perfectly matched to your experimental requirements. They offer different sample environments to best suit the requirements of your sample, and different cooling technologies to meet the needs of your laboratory.
Low cryogen consumption: Brings significant benefits in terms of running cost
Quick experiments: A range of sample holders and probes, including liquid cuvettes sample holders and height adjust/rotate probes, are available
Simple: The experimental windows and sample holders can be easily changed
Versatile: A range of window materials are available. Please contact your local sales representative for more information
Superior performance: A dynamic exchange gas model, suitable for low conductivity or high heat load samples, is available. Please contact your local sales representative for more information
Software control: Oxford Instruments electronics products are controllable through the software using RS232, USB (serial emulation), TCP/IP or GPIB interfaces. LabVIEW function libraries and virtual instruments are provided for Oxford Instruments electronics products to allow PC-based control and monitoring. These can be integrated into a complete LabVIEW data acquisition system
Temperature range: 3.2 to 500 K, may be extended down to 2.2 K
Temperature stability: ± 0.1 K
System may also be run with liquid nitrogen, temperature range: 77 to 500 K
Liquid helium consumption rate at 4.2 K: < 0.45 l/hr
Cool down consumption: 1.3 litre (nominal)
Room Temperature to base temperature: approx. 10 min with pre-cooled transfer siphon
Sample change time: approx. 60 min (sample can be changed with the cryostat cold)
Weight: 2 kg
A typical system consists of:
UV / Visible spectroscopy: Experiments at low temperatures reveal the interaction between the electronic energy levels and vibrational modes in solids.
Infra-red spectroscopy: Low temperature IR spectroscopy is used to measure changes in interatomic vibrational modes as well as other phenomena such as the energy gap in a superconductor below its transition temperature.
Raman spectroscopy: Lower temperatures result in narrower lines associated with the observed Raman excitations.
Photoluminescence: At low temperatures, spectral features are sharper and more intense, thereby increasing the amount of information available.