source: sasview/docs/sphinx-docs/source/user/sasgui/perspectives/calculator/kiessig_calculator_help.copy @ 49148bb

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1.. kiessig_calculator_help.rst
2
3.. This is a port of the original SasView html help file to ReSTructured text
4.. by S King, ISIS, during SasView CodeCamp-III in Feb 2015.
5
6.. |pi| unicode:: U+03C0
7.. |Ang| unicode:: U+212B
8
9Kiessig Thickness Calculator Tool
10=================================
11
12Description
13-----------
14
15This tool is approximately estimates the thickness of a layer or the diameter
16of particles from the position of the Kiessig fringe/Bragg peak in NR/SAS data
17using the relation
18
19(thickness *or* size) = 2 * |pi| / (fringe_width *or* peak position)
20 
21.. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
22
23Using the tool
24--------------
25
26To get a rough thickness or particle size, simply type the fringe or peak
27position (in units of 1/|Ang|\) and click on the *Compute* button.
28
29.. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
30
31.. note::  This help document was last changed by Steve King, 01May2015
32
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