Magnetic field scan steady-state DNP experiment. Returns the steady-state population of the user-specified state as a function of magnetic field.
parameters.mw_pwr - microwave power, Hz parameters.mw_frq - microwave frequency offset from the free electron frequency at the reference B0 field, Hz parameters.fields - a vector of magnetic field off- sets from the reference B0 field, Tesla parameters.rho0 - equilibrium state at the reference B0 field parameters.coil - detection state vector or a horizon- tal stack thereof parameters.mw_oper - microwave irradiation operator parameters.ez_oper - Lz operator on the electrons parameters.method - 'backslash' to use Matlab's linear equation solver, 'gmres' to use ILU preconditioned GMRES H - Hamiltonian matrix, received from context function R - relaxation superoperator, received from context function K - kinetics superoperator, received from context function
dnp - an array of the steady state amplitudes of the states specified in parameters.coil as at each of the magnetic fields supplied
Cross effect in a system with two spin-1/2 electrons (cross_effect_field_scan_1.m example file in examples/dnp_solids directory):
Solid effect in a system with a spin-7/2 gadolinium ion (solid_effect_field_scan_1.m example file in examples/dnp_solids directory):
- The relaxation superoperator supplied to this function should NOT be thermalized.
- Thermal equilibrium state is assumed to be the same at all fields in the sweep. Do not use this function for broad magnetic field sweep experiments.
- Backslash method is recommended for small spin systems and GMRES method for large ones.