Development of cryogenic probe system for high-sensitive NMR spectroscopy

Abstract

Utilizing a cryogenic probe system is a promising approach to improve signal-to-noise-ratio (SNR) in the nuclear magnetic resonance (NMR) spectrometer. We have been developing an NMR spectrometer based on a superconducting-split-pair magnet. This unique structure of the magnet allows using solenoid-shaped antenna coil, which ensures about 2 times higher sensitivity than the conventional saddle-shaped antenna coil. The goal of the present study is to realize higher sensitivity by implementing the superconducting-split-pair magnet and solenoidal-shaped antenna coil. Our immediate objective is to establish the cryogenic probe system for the superconducting-split-pair magnet. In this paper, the basic idea and design of the system and some preliminary results are described.