Chlorine nuclear quadrupole resonance spectral line asymmetry and spin echo envelope modulation in gold(III) chloride

1973 ◽  
Vol 21 (3) ◽  
pp. 552-554 ◽  
Author(s):  
R. Lenk ◽  
E.A.C. Lucken
2007 ◽  
Vol 45 (4) ◽  
pp. 925-933 ◽  
Author(s):  
Samuel D. Somasundaram ◽  
Andreas Jakobsson ◽  
John A. S. Smith ◽  
Kaspar Althoefer

1994 ◽  
Vol 49 (1-2) ◽  
pp. 5-13 ◽  
Author(s):  
John Clarke

Abstract The dc SQUID (Superconducting QUantum Interference Device) can be configured as an ampli­fier of spin-echos with a noise temperature of approximately 10 mK (f/1 M Hz) at an operating temperature of 1.5 K. A Fourier transform spectrometer based on a SQUID with a superconducting input circuit and operated in a flux-locked loop is used to obtain nuclear quadrupole resonance (NQR) spectra in a broadband m ode over the bandwith 0 -1 M Hz. Spin-echo spectra of 14N in NH4ClO4 reveal sharp NQR resonances, obtained simultaneously, at 17.4, 38.8 and 56.2 kHz. At 1.5 K, the measured longitudinal and transverse relaxation times T1 and T2 for the 38.8 kHz transition are 63 ± 3 ms and 22±2 ms, respectively.


1993 ◽  
Vol 163 (10) ◽  
pp. 95 ◽  
Author(s):  
Vadim S. Grechishkin ◽  
Nikolai Ya. Sinyavskii

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