Measurement of the Transverse Relaxation Time, T2, of Inversion Doublets of NH3from a Free Induction Decay Signal

1980 ◽  
Vol 48 (3) ◽  
pp. 951-957 ◽  
Author(s):  
Keiichi Tanaka ◽  
Setsuo Akiyama ◽  
Taso Ikeura ◽  
Eizi Hirota
Keyword(s):  
Relaxation Time ◽  
Free Induction Decay ◽  
Transverse Relaxation Time ◽  
Free Induction Decay Signal ◽  
Transverse Relaxation ◽  
Free Induction ◽  
Decay Signal

Influences of Size and Relaxation Time on Optical Free Induction Decay in a Small Spherical CdSe/ZnS Quantum Dot Quantum Well

2009 ◽  
Vol 64 (12) ◽  
pp. 837-843
Author(s):  
Qianqian Xu ◽  
Duanzheng Yao
Keyword(s):  
Relaxation Time ◽  
Quantum Dot ◽  
Quantum Well ◽  
Free Induction Decay ◽  
Transverse Relaxation Time ◽  
Transverse Relaxation ◽  
Mass Approximation ◽  
Two Factors ◽  
Free Induction ◽  
Decay Signal

The optical free induction decay (OFID) induced by the transition between 1s and 1p state in a small isolated spherical CdSe/ZnS quantum dot quantum well (QDQW) has been studied numerically under the framework of effective-mass approximation. The size and relaxation time-dependent properties of the OFID have been obtained and analyzed. It shows that the OFID-change mechanisms dependent on shell thickness and core size are different. Moreover, the OFID signal decays sharply in amplitude and life as the transverse relaxation time being reduced while the change is slight to the longitudinal relaxation time. By comparing these two factors, we infer that the size mainly influences the amplitude of the decay signal and the delay time is basically determined by the relaxation time

Pulsed NMR Sulfur-33 Investigations with a Superconducting Solenoid

1971 ◽  
Vol 25 (3) ◽  
pp. 363-368 ◽  
Author(s):  
Harry D. Schultz ◽  
Clarence Karr ◽  
G. D. Vickers
Keyword(s):  
Free Induction Decay ◽  
Reference Model ◽  
Sulfur Compounds ◽  
Free Induction Decay Signal ◽  
Relaxation Parameters ◽  
Free Induction ◽  
Decay Signal ◽  
Pulsed Nmr ◽  
Principal Contributor

There is much interest in examining the structure of sulfur compounds because of the role of sulfur as a principal contributor to environmental pollution. By a pulsed NMR technique, the extremely weak free induction decay signal of 33S in several liquid compounds was detected. Using the relatively easy to detect carbon disulfide resonance as a reference model, a method is discussed for studying sulfur compounds which takes into consideration the symmetry and spin relaxation parameters ( T1 and T2). Consideration is given to the instrumental parameters which can be varied to enhance 33S pulsed NMR resonances.

Observation of NMR free induction decay signal in nuclear ordered solid 3He

1984 ◽  
Vol 100 (4) ◽  
pp. 201-203 ◽  
Author(s):  
T. Kusomoto ◽  
O. Ishikawa ◽  
T. Mizusaki ◽  
A. Hirai
Keyword(s):  
Free Induction Decay ◽  
Free Induction Decay Signal ◽  
Free Induction ◽  
Decay Signal ◽  
Solid 3He

Clipped free induction decay signal analysis

1977 ◽  
Vol 49 (3) ◽  
pp. 508-510 ◽  
Author(s):  
R. D. Larsen ◽  
E. F. Crawford
Keyword(s):  
Signal Analysis ◽  
Free Induction Decay ◽  
Free Induction Decay Signal ◽  
Free Induction ◽  
Decay Signal
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