When a new superconducting magnet is brought up to field one of the specifications for assessing it is magnetic field drift. A cryomagnet's magnetic field is not constant but changes with time, and if this change is too rapid then the magnet becomes difficult to use. Measuring the drift rate of a new magnet is one criterion for judging its quality.
Monday, May 5, 2025
Tuesday, March 4, 2025
Sine bell for truncation
The sine bell is a window function commonly used to enhance the appearance of truncated data, such as often recorded for multidimensional NMR spectra. The sine bell ensures the signal decays to zero and fourier transformation will not produce artifacts. Shifting the sine bell also allows some resolution enhancement to be applied.
Monday, February 3, 2025
Gaussian multiplication for resolution enhancement
When processing NMR data a window function, or apodisation, is typically applied to emphasise or deemphasise certain aspects of the spectrum. Numerous window functions are available each with their own benefits and drawbacks. A gaussian multiplication is often applied to 1D data to increase resolution at the expense of sensitivity.
Subscribe to:
Posts (Atom)