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--- playground:playground [2024/01/23 07:31] – johnsoevans
+++ playground:playground [2025/09/19 15:18] (current) – external edit 127.0.0.1
@@ Line 4: / Line 4: @@
-====== Lobanov Absorption Correction for TOF Neutrons ======
-Description: This is the absorption correction used in GSAS formatted for TOF neutron diffraction
-Comment: Lobanov absorption macro with calculated lambda for wavelength dependence of mu (as per GSAS manual). The macro can be edited to function with CW data with 'Lam' replacing 'lambda' and 'Sin(Th)' replacing 'sintheta'
+<code topas>
-Contributed by: Pamela Whitfield
-Lf is the flightpath and two_theta the detector angle. The refinable parameter under each dataset is 'mu'
-POWGEN flightpath is 60 metres with data focussed into a single dataset at 90 degrees.
-Absorption is angle-dependent. For more conventional TOF instruments with multiple detector banks such as HRPD, two_theta (and maybe Lf) will differ for each bank by using 'local' variables as opposed to global 'prm' variables, e.g.
-<code vb>
 /* this is a comment */
 ' this is a quotation comment