scholarly journals Erratum: Fluorescence transient and optical free induction decay spectroscopy of pentacene in mixed crystals at 2 K. Determination of intersystem crossing and internal conversion rates [J. Chem. Phys. 70, 5807 (1979)]

1979 ◽  
Vol 71 (12) ◽  
pp. 5389 ◽  
Author(s):  
Harmen de Vries ◽  
Douwe A. Wiersma
Keyword(s):  
Free Induction Decay ◽  
Internal Conversion ◽  
Chem Phys ◽  
Mixed Crystals ◽  
Intersystem Crossing ◽  
Fluorescence Transient ◽  
Decay Spectroscopy ◽  
Conversion Rates ◽  
Free Induction

scholarly journals New Method for the Determination of Diffusion Constants from Partially Narrowed Nmr Lines

1980 ◽  
Vol 3 ◽  
Author(s):  
D. Wolf
Keyword(s):  
Relaxation Time ◽  
Free Induction Decay ◽  
Weighted Sum ◽  
Molecular Motions ◽  
Rigid Lattice ◽  
Background Contribution ◽  
Intermediate Temperature Range ◽  
Diffusion Constants ◽  
Free Induction

ABSTRACTThe effect of atomic and molecular motions on the NMR free-induction decay (FID) and lineshape is investigated theoretically in the intermediate temperature range in which the NMR line is only partially narrowed. It is shown that the FID may be decomposed into the weighted sum of a rigid-lattice (background) contribution and an exponentially decaying part containing all the information on the diffusive or reorientational motions in the crystal in terms of the spin-spin relaxation time T2.

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