Larmor (ENDOR) frequency of nuclear spins.

freq = larmorfrq(Nucs,Fields)

larmorfrq computes the Larmor frequencies (in MHz) for the nuclear spins given in Nucs at magnetic fields (in mT) given in Fields.

Nucs is either a cell array of nuclear isotope symbols or a string with a comma-separated list of nuclear isotope symbols, e.g., '14N' or {'14N','1H'} or '63Cu,65Cu'.

Fields is a vector of magnetic field values in mT, e.g. 350 or [350 365 380] or 1200:10:1300.

freq contains the Larmor (ENDOR, NMR) frequencies in MHz. Each column contains the frequencies of one nucleus.

The ENDOR frequencies of the two naturally occurring nitrogen isotopes at a typical X-band magnetic field value are

larmorfrq('14N,15N',350)

ans =
    1.0772    1.5110

The same result can be obtained by using a cell array instead of the comma separated list of isotopes

larmorfrq({'14N','15N'},350)

ans =
    1.0772    1.5110

The ENDOR frequency of protons for a series of magnetic field values can be obtained with

larmorfrq('1H',350:10:400)

ans =
   14.9021
   15.3279
   15.7537
   16.1794
   16.6052
   17.0310

nucabund, nucdata, nucgval, nucqmom, nucspin