Profile Parameters Refinement Dialog
Exponential decay
Parameters defining the variation of the exponential decay function with d-spacing.
For NPRO=9
Fast decay:
Slow decay:
For NPRO=10,
The
parameters correspond to the epithermal and thermal component
of the neutron spectrum. In this case the TOF peak positions and decay
parameters versus d-pacing are calculated using the following expressions:
where:
and erfc is the complementary error function.
Fast and slow decay for epithermal component:
Fast and slow decay for thermal component:
The final fast and slow decay parameters are calculated like the case of TOF peak positions: