Erratum: Scheme for Sensitive Nuclear Double‐Resonance Detection: Deuterium and 13C

1971 ◽  
Vol 54 (3) ◽  
pp. 1431-1431
Author(s):  
M. Schwab ◽  
E. L. Hahn
1998 ◽  
Vol 53 (6-7) ◽  
pp. 301-304
Author(s):  
David Stephenson ◽  
John A. S. Smith

Abstract Double resonance level crossing detection cannot normally be used to record transitions between the quadrupole Zeeman levels. Neither can it be used if the quadrupole resonance frequency is larger than the proton NMR frequency in high field. A simple variation of the level crossing experiment is demonstrated which allows energy to be efficiently transferred from quadrupole to proton system and hence lead to detection in these two cases. In the case of the quadrupole Zeeman levels it allows transitions between the ±½ levels to be detected in a small magnetic field, allowing measurement of the asymmetry parameter (ƞ) for spin 3/2 systems. This is demonstrated for the 11B nucleus in triethanolamine borate. Detection of high frequency quadrupole transitions is demonstrated from which relaxation information is obtained.


1981 ◽  
Vol 43 (1) ◽  
pp. 112-121 ◽  
Author(s):  
Yair Margalit ◽  
Mordechai Shporer

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