Lorentz Factor in TOF neutron diffraction

[Neil Hyatt]

Dear all,

The Lorentz factor for TOF-neutron diffraction is given in the GSAS manual as:

L = d^4 sin(theta) (pg. 125 of the old manual; pg. 145 in the new).  

Does anyone know how this factor is derived?  I would greatly appreciate
any helpful references.

All the best,

Neil Hyatt.



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