DRY ICE 4K for Mossbauer
The DRY ICE 4K Cryostat for Mossbauer experiments where quick sample changes are vital. The system is loaded with a probe which cools the sample through exchange gas. Changing the sample simply requires removing the probe, changing the sample and then re-inserting the probe. This changeover can be completed in as little as 2 hours (4K to 300K back to 4K).
This cryostat has been used for a variety of applications including; pre-screening samples for dilution fridges, ESR, Mossbauer and general electrical properties measurements.
*Anti Vibration frame shown is optional extra.
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Temperature range |
<4K to 325K (420 and 800K options) |
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Cooling power |
2.0W at 4.2K |
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Temperature Stability |
±10mK below 10K, ±20mK between 10-50, ±50mK between 50-100K, ±100mK for temperatures ≥100K |
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Sample environment |
Exchange Gas (variable pressure) |
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Sample space |
D. 50mm, L. 50mm as standard (custom sizes available) |
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Vibration at sample * |
±20 nm with anti-vibration options |
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Cool down time to |
<4hrs to 4K |
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Compressor |
Air or water cooled options available |
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Wiring * |
DC, RF and fiber optic options available |
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Optical access * |
Two aluminised Mylar windows (see window materials for other options) |
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Base temperature |
4.2K |
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Hold time |
N/A |
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Temperature controller |
Lakeshore 336 as standard (Other controllers available on request) |
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Magnetic Field |
Designed to suit requirements (see magnet options) |
DR Christian Schroder - University of Stirling
The ICEoxford cryostat is an essential piece of equipment in our Mossbauer spectroscopy laboratory for Earth and Environment (MoSEE) at the University of Stirling. My overarching research interest is in the (bio)geochemical iron cycle and its interaction with the carbon cycle and other nutrient elements. These interactions proceed via reactive iron species, which often occur in nanoparticulate form, in which they display superparamagnetic behaviour. In order to investigate such particles fully, we need to be able to obtain Mossbauer spectra at different temperatures all the way down to liquid helium temperature (4.2Kelvin). The bespoke cryostat built by ICEoxford reaches this temperature (and below) reliably within a couple hours. It holds all temperatures between liquid helium temperature and room temperature stable. We have not experienced any significant temperature fluctuations or line broadening due to vibrations of the equipment. Overall, I am extremely happy with the value for money this cryostat affords our lab. The company were very receptive to my comments during the design of the instrument and incorporated all of my suggestions, and they have always been responsive to my queries since. We have used the cryostat successfully in a commercial study with a pharmaceutical company. The first scientific paper with results produced using the cryostat is currently in review.
