Nitrogen-14 quadrupole resonance detection of RDX and HMX based explosives

1995 ◽  
Author(s):  
J.A.S. Smith
Keyword(s):  
Quadrupole Resonance ◽  
Resonance Detection

Double Resonance Detection Using Zero Field Level Crossing

1998 ◽  
Vol 53 (6-7) ◽  
pp. 301-304
Author(s):  
David Stephenson ◽  
John A. S. Smith
Keyword(s):  
High Frequency ◽  
Asymmetry Parameter ◽  
Double Resonance ◽  
Zero Field ◽  
Level Crossing ◽  
Small Magnetic Field ◽  
Crossing Experiment ◽  
Quadrupole Resonance ◽  
Simple Variation ◽  
Resonance Detection

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.

Polarization enhancement technique for nuclear quadrupole resonance detection

2014 ◽  
Vol 61-62 ◽  
pp. 35-38 ◽  
Author(s):  
Y.J. Kim ◽  
T. Karaulanov ◽  
A.N. Matlashov ◽  
S. Newman ◽  
A. Urbaitis ◽  
...  
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Enhancement Technique ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole ◽  
Resonance Detection

Quadrupole moment of41Sc by use of new nuclear quadrupole resonance detection

1993 ◽  
Vol 78 (1-4) ◽  
pp. 191-194 ◽  
Author(s):  
T. Minamisono ◽  
S. Fukuda ◽  
T. Ohtsubo ◽  
M. Tanigaki ◽  
A. Kitagawa ◽  
...  
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Quadrupole Moment ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole ◽  
Resonance Detection
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