PointByPointVCorrection

From MantidProject

Contents 1 Summary 2 Properties 3 Description 3.1 Valid input workspaces 4 Source Code

Summary

Spectrum by spectrum division for vanadium normalisation correction.

Properties

Order	Name	Direction	Type	Default	Description
1	InputW1	Input	Workspace	Mandatory	The name of the Sample workspace.
2	InputW2	Input	Workspace	Mandatory	The name of the Vanadium workspace.
3	OutputWorkspace	Output	Workspace	Mandatory	The name with which to store the output workspace in the Analysis Data Service

Description

Divides the data spectra by the matching vanadium spectra according to the following formula:

where y_i is the signal in the sample workspace, v_i the count in the corresponding vanadium bin, Δw_i the bin width,

∑	yi
i

the integrated data count and the sum of the sample counts divided by the vanadium counts multiplied by the bin width.

This leads to a normalised histogram which has unit of counts, as before.

In order to minimise sudden jumps in the data caused by 0 counts in the corresponding vanadium spectrum it is worth considering smoothing the Vanadium spectrum using SmoothData prior to using it in this algorithm.

Valid input workspaces

The input workspaces have to have the following in order to be valid inputs for this algorithm.

• The same number of spectra
• Matching spectra numbers

This is normally not a problem unless the setup of the instrument has been changed between recording the Vanadium and the sample datasets.

Source Code

Header PointByPointVCorrection.h

Source PointByPointVCorrection.cpp