ex_4pdeer

4-pulse DEER experiment

Syntax

info = ex_4pdeer(t)
pathways = ex_4pdeer(t,param)
Parameters
  • t - Time axis (M-array), in microseconds
  • param - Model parameters (array)
Returns
  • pathways - Dipolar pathways (array)
  • info - Model information (struct)

Model

../_images/model_scheme_ex_4pdeer.png

This experiment model has one modulated pathway and an unmodulated contribution. The kernel is

K(t,r) = [1-\lambda + \lambda K_0(t-T_0^{(1)},r)]B(t-T_0^{(1)},\lambda)

where T_0^{(1)}=0 is the refocusing time of the modulated dipolar pathway.

Variable Symbol Default Lower Upper Description
param(1) \lambda 0.3 0 1 modulated pathway amplitude (modulation depth)

Example of a simulated signal using default parameters:

../_images/model_ex_4pdeer.png

Description

info = ex_4pdeer(t)

Returns an info structure containing the specifics of the model:

  • info.model - Full name of the parametric model.
  • info.nparam - Total number of adjustable parameters.
  • info.parameters - Structure array with information on individual parameters.
pathways = ex_4pdeer(t,param)

Generates the dipolar pathways matrix pathways from the time-axis t and model parameters param.