lass="optionfield"><code>Exchange</code></div>
<div class="optiondescr">
<p>
Effective Heisenberg spin exchange rate, in inverse microseconds. Implements a simple contact-exchange model, see eq. (A27) from Meirovitch et al, J.Chem.Phys.77, 3915-3938. See also Freed, in: Spin Labeling (ed. L.J. Berliner), 1976, p.68.
</div>

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<div class="subtitle2">Input: Experimental parameters</div>

<p>
The experiment structure <code>Exp</code> co