SuperCOOL probe

The detection coil and preamplifier are cooled to cryogenic temperature to reduce thermal noise to an extremely low level, enabling measurement with sensitivity several times higher than that of conventional room temperature probes. Automatic tuning and matching is supported, so a wide variety of continuous measurements can be performed in combination with the auto-tuning unit.
SuperCOOL probes are capable of controlling the sample temperature over a very wide range from -40°C to +150°C. The Probe Lifter and Probe Arm are available as optional accessories to alleviate probe exchange.
UltraCOOL probe / SuperCOOL probe

Features

Type Cooling by Sample Coil
Temperature 		Features
UltraCOOL UC He gas ≒20K Ultra high sensitivity due to cryogenic capability
SuperCOOL MARVEL SCC He gas ≒50K About 1/4 of the running cost of UltraCOOL probe
No need to fill the cooling system with liquid nitrogen
Higher sensitivity than the open type
SCO Liquid nitrogen ≒77K Reasonable installation and running costs
Uses liquid nitrogen as coolant
Liquid nitrogen can be refilled during NMR measurement

SuperCOOL MARVEL probe

SuperCOOL Open
SuperCOOL MARVEL Open
SuperCOOL MARVEL Closed

The SuperCOOL MARVEL probe is available in two cooling methods: open type using a liquid nitrogen tank and circulating type using an air-cooled refrigerator. The open type does not require a refrigerator, so it is superior in terms of running cost. The circulating type, which has a higher cooling capacity and better sensitivity, does not require replenishment of the refrigerant and has a higher continuous operating capacity.

29Si Background-Free

JEOL cryogenic probes greatly reduce the 29Si background signal coming from the probe components. A background-free measurement is available for glass materials. The spectra below show that the background signal was greatly reduced without the sample tube, demonstrating that the most of background signals came from the sample tube.

29Si NMR spectrum of 10wt% water glass/D2O

29Si NMR spectra measured by the SuperCOOL MARVEL probe with a 5 mm PTFE sample tube. As no background signal appears around -100 ppm, signals on the high magnetic field side are clearly confirmed.

Probe Arm and Probe Lifter

Cryogenic probes cannot be raised or lowered by hand in the cooled state due to safety concerns, and hence it might be necessary to warm up cryogenic probes to room temperature before manipulating with them. However, you can replace the UltraCOOL probe or SuperCOOL MARVEL probe in cooled state by using the Probe Arm or the Probe Lifter. Also, though UltraCOOL and SuperCOOL MARVEL probes are heavier than room temperature probes due to their design, they can be easily exchanged using the Probe Arm or the Probe Lifter.
Probe Arm
Probe Arm
Probe Lifter
Probe Lifter

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