NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
The spin-temperature theory of dynamic nuclear polarization and nuclear spin-lattice relaxationA detailed derivation of the equations governing dynamic nuclear polarization (DNP) and nuclear spin lattice relaxation by use of the spin temperature theory has been carried to second order in a perturbation expansion of the density matrix. Nuclear spin diffusion in the rapid diffusion limit and the effects of the coupling of the electron dipole-dipole reservoir (EDDR) with the nuclear spins are incorporated. The complete expression for the dynamic nuclear polarization has been derived and then examined in detail for the limit of well resolved solid effect transitions. Exactly at the solid effect transition peaks, the conventional solid-effect DNP results are obtained, but with EDDR effects on the nuclear relaxation and DNP leakage factor included. Explicit EDDR contributions to DNP are discussed, and a new DNP effect is predicted.
Document ID
19750002693
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Report (TR)
Authors
Byvik, C. E. (NASA Langley Research Center Hampton, VA, United States)
Wollan, D. S. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1974
Subject Category
Nuclear And High-Energy Physics
Report/Patent Number
NASA-TR-R-427
L-9554
Accession Number
75N10765
Funding Number(s)
PROJECT: RTOP 176-31-21-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available