Theory of the Relaxation Processes for Multilevel Spin Systems in Dilute Paramagnetic Solids at High Temperature
✍ Scribed by E. F. Popescu
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 233 KB
- Volume
- 214
- Category
- Article
- ISSN
- 0370-1972
No coin nor oath required. For personal study only.
✦ Synopsis
A direct density matrix treatment of the relaxation processes in dilute paramagnetic solids at high temperature is performed. Using the ªdressed stateº formalism, the theory is developed differently from the one often referred to as the ªRedfield Theoryº, which uses the concepts of correlation function and relaxation matrix. General expressions for the linewidths and spin±lattice relaxation rates are obtained in the high temperature limit, for a lattice with infinite specific heat and up to strong microwave fields. In addition, the theory predicts experimental proofs for those cases where the concept of relaxation matrix ceases to be correct, or the lattice cannot be considered as having an infinite specific heat.