Method of radio-frequency excitation in an NMR experiment
US4940940A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1989 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Jan 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/54
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to optimize the determination of radio-frequency energization in an NMR experiment, the Schrodinger equation is written relative to the amplitude of probability of the wave function of spins resonating at a given resonance frequency wherein the Hamiltonian depends on the frequency and on the radio-frequency energization to which they are subjected. Analytical polynominal expressions are deduced for the probability amplitudes at the end of the energization as a function of the resonance frequency. The coefficients are optimized by means of calculation algorithms, from which the characteristics of the energization are deduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.