Pulsed nuclear magnetic resonance spectrometers
US4193024A · kind A · utility
10Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1978 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Jul 13, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/844
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulsed N.M.R. spectrometer employing a highly stable magnet (e.g. a superconducting magnet) has a field-frequency lock which is operative to correct the intensity of the magnetic field only at discrete intervals. The lock operates on the principles of a phase locked loop, and utilizes the free induction decay of the magnetic resonance of an appropriate nuclear species incorporated in a reference sample which is subjected to the magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.