xixdnp_steady.m

TPPM DNP and its special case X-inverse-X (XiX) DNP experiment from (https://doi.org/10.1021/jacs.1c09900), steady state version.

Syntax

   dnp=xixdnp_steady(spin_system,parameters,H,R,K)

Arguments

   H   - Hamiltonian matrix, received from context function

   R   - relaxation superoperator, received from context function, must be thermalised to some finite temperature

   K   - kinetics superoperator, received from context function

   parameters.irr_powers   - microwave amplitude (electron nutation frequency), Hz

   parameters.coil         - detection state vector

   parameters.pulse_dur    - pulse duration, seconds

   parameters.phase        - phase of each second pulse in radians

   parameters.nloops       - number of XiX/TPPM DNP blocks, must be an integer power of 2

   parameters.shot_spacing - delay between microwave irradiation periods, seconds

   parameters.addshift     - shift of the centre of the field profile, Hz

   parameters.el_offs      - microwave resonance offsets, a vector of frequencies in Hz

   sys.tols.prop_chop      - propagator accuracy

Outputs

   dnp                     - steady state observable on the de-
                             tection state vector as a function
                             of microwave resonance offset

See also

DNP experiments

Version 2.11, authors: Shebha Anandhi Jegadeesan, Ilya Kuprov, Guinevere Mathies