Cryoprobe

From NMR Wiki

Cryoprobe or Cold probe is a technology where probe coil and possibly built-in preamplifier are cooled with a stream of He gas at ~10-25K (?).

The result is that signal to noise ratio can increase several times, e.g. ~3.5x, vs. a room temperature probe.

Typical parts included into the cryo-probe system

• Helium compressor (expected lifetime 3-5 years of continuous operation)

Maintenance

Cryoprobes require periodic maintenance and careful operation.

For example, care must be taken so that water, cooling the compressor is at suggested temperature (or even slightly cooler). Even if water temperature is only slightly above nominal, the compressor oil