r1csa2tauc.m

Estimates the rotational correlation time from the longitudinal CSA relaxation rate by solving the Redfield relaxation theory expression for rotationally modulated CSA-induced longitudinal relaxation; make sure the CSA is supplied as fractions, not ppm.

Syntax

    tauc=r1csa2tauc(R1,del_sq,B0,isotope)

Parameters

   R1      - longitudinal relaxation rate, Hz

   del_sq  - second rank invariant of the CSA,
             see blinv.m function

   B0      - magnetic field, Tesla

   isotope - isotope specification string, e.g. '1H'

Outputs

    tauc    - rotational correlation time, seconds

Notes

Most relaxation rates are not solely due to CSA, and so the result is an estimate. If you get the "no real solutions" error, you relaxation is certainly not CSA dominated.

See also

blinv.m, relaxation.m, rlx_scalar.m, rlx_split.m, rlx_t1_t2.m, r2csa2tauc.m, brokensymm.m, levelpop.m, quad_shift.m, r1n_dnp.m, rlx_csa.m, rlx_dd_csa.m, rlx_dip.m, rlx_hfc.m, rlx_nqi.m, trosy_eff.m, Textbook_module

Version 2.1, authors: Ilya Kuprov