The home-built pulse NMR spectrometer with CPMG sequence for 3He research at low temperatures
Abstract
The home-built pulse NMR spectrometer for 3He investigations is described in this article. It operates in the 1.5-4.2 K temperature range, 0-850 mT magnetic field range, and 3-150 MHz frequency range with a dead time as short as 8 μs at 8 MHz that makes possible multinuclear NMR measurements. The spectrometer includes: saturation-recovery and inversion-recovery pulse sequences for spin-lattice relaxation time measurements by FID and Hahn echo amplitude measuring, CPMG pulse sequence for spin-spin relaxation time measurements, pulse gradient coils for diffusion measurements and a possibility to modify surface of porous samples by preadsorption of certain amount of nitrogen. The block diagrams of the spectrometer, the transmit-receive path and the amplifier are also presented.
Supporting agencies: This work was supported by the Russian Foundation for Basic Research, project no. 16-32-60155 mol a dk.
About the Authors
G. A. Dolgorukov
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
V. V. Kuzmin
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
A. V. Bogaychuk
Kazan Federal University; Institute of Applied Research, Tatarstan Academy of Sciences
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008; 420111 Kazan
E. M. Alakshin
Kazan Federal University; Institute of Applied Research, Tatarstan Academy of Sciences
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008; 420111 Kazan
K. R. Safiullin
Kazan Federal University; Institute of Applied Research, Tatarstan Academy of Sciences
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008; 420111 Kazan
A. V. Klochkov
Kazan Federal University
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008
M. S. Tagirov
Kazan Federal University; Institute of Applied Research, Tatarstan Academy of Sciences
Russian Federation
Russian Federation
Kremlevskaya 18, Kazan 420008; 420111 Kazan
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Review
For citations:
Dolgorukov G.A., Kuzmin V.V., Bogaychuk A.V., Alakshin E.M., Safiullin K.R., Klochkov A.V., Tagirov M.S. The home-built pulse NMR spectrometer with CPMG sequence for 3He research at low temperatures. Magnetic Resonance in Solids. 2018;20(2):18206 (9 pp.).
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