Changeset 898


Ignore:
Timestamp:
May 8, 2013 1:02:28 PM (9 years ago)
Author:
toby
Message:

minor help updates

Location:
trunk/help
Files:
2 edited

Legend:

Unmodified
Added
Removed
  • trunk/help/Calibration of an area detector in GSAS.htm

    r895 r898  
    904904
    905905<p class=MsoNormal><span style='mso-spacerun:yes'> </span>The plot window shows
    906 the image; notice the elliptical shape of the powder diffraction rings. The
     906the image; notice the elliptical shape of the powder diffraction rings
     907due to the 45 degree detector tilt. The
    907908blue <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri","sans-serif";
    908909mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
    909910Calibri;mso-bidi-theme-font:minor-latin;color:#4F81BD;mso-themecolor:accent1'>X</span></b>
    910 marks the default beam location (image center); your calibration will correctly
    911 place it. Also notice that the values shown in the plot window status bar (at
    912 bottom of plot window) change as you move the cursor over the plot; these
    913 values are at present in error as they are computed from the default
    914 calibration values. They will be correct after you finish the calibration.</p>
     911marks the beam location (which defaults to the image center); the
     912calibration you will perform here will find the correct
     913placement for it. Also note that as the mouse is moved across the plot
     914the plot window status bar (at bottom of plot window) shows the
     915cursor position, as computed from the default (incorrect)
     916calibration values. These constants will be correctly determined after you finish the calibration.</p>
    915917
    916918<p class=MsoNormal><span style='mso-spacerun:yes'> </span><span
     
    10041006
    10051007<p class=MsoNormal><span style='mso-spacerun:yes'>  </span>To remove a point
    1006 added in error click on that point with the right mouse button [on the Mac, if
    1007 you have a single-button mouse, hold the Command (<span style='font-family:
    1008 "Cambria Math","serif";mso-bidi-font-family:"Cambria Math"'>&#8984;</span>) key
    1009 down and click]. </p>
     1008added in error click on that point with the right mouse button
     1009(on the Mac, if you have a single-button mouse, hold the shift and control keys
     1010down and click).
     1011</p>
    10101012
    10111013<h3><span style='mso-spacerun:yes'> </span>Fourth:</h3>
    10121014
    10131015<p class=MsoNormal><span style='mso-spacerun:yes'>  </span>When done, press the
    1014 right mouse button well away from any points that have been added [on the Mac,
    1015 if you have a single-button mouse, hold the Command (<span style='font-family:
    1016 "Cambria Math","serif";mso-bidi-font-family:"Cambria Math"'>&#8984;</span>) key
    1017 down and click].</p>
     1016right mouse button well away from any points that have been added
     1017(on the Mac, if you have a single-button mouse, hold the shift and control keys
     1018down and click).
     1019</p>
    10181020
    10191021<p class=MsoNormal>The calibration is then performed. First the rings are
  • trunk/help/Fit Peaks.htm

    r895 r898  
    17311731new mineral <a href="http://en.wikipedia.org/wiki/Jadarite"><span class=SpellE>jadarite</span></a>
    17321732(aka “<a href="http://en.wikipedia.org/wiki/Kryptonite">kryptonite</a>”). The
    1733 data was also collected on 11BM-B at APS. The unit cell is monoclinic so it is
     1733data were also collected on 11BM-B at APS. The unit cell is monoclinic so it is
    17341734a more substantial test of the indexing capability of GSAS-II.</p>
    17351735
     
    17701770small ones); use <b style='mso-bidi-font-weight:normal'><span style='font-family:
    17711771"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
    1772 minor-latin'>Auto search</span></b> to start and then fill in by hand. Note
     1772minor-latin'>Auto search</span></b> to start and then fill in by hand:
     1773Add peaks by left-clicking on a data point near the top of the
     1774peak. Peak positions can be moved by dragging the peak line and peaks
     1775can be deleted by right-clicking on them. This only works when the
     1776zoom and reposition modes (below) are not selected. Also note
    17731777some peaks have shoulders most notably at 5.07, 6.04, 7.81deg. I found 28 peaks
    17741778(there was one very weak shoulder at ~7.3 deg. I skipped – it might be from a
     
    19391943
    19401944<p class=MsoNormal>In this exercise we will fit peaks and index them for
    1941 sucrose in preparation for a charge flipping exercise. The data was also
     1945sucrose in preparation for a charge flipping exercise. The data were also
    19421946collected on 11BM-B at APS. The unit cell is monoclinic so is a more
    19431947substantial test of the indexing capability of GSAS-II.</p>
     
    19881992small ones); use <b style='mso-bidi-font-weight:normal'><span style='font-family:
    19891993"Calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
    1990 minor-latin'>Auto search</span></b> to start and then fill in by hand. Note the
     1994minor-latin'>Auto search</span></b> to start and then fill in by hand:
     1995Add peaks by left-clicking on a data point near the top of the
     1996peak. Peak positions can be moved by dragging the peak line and peaks
     1997can be deleted by right-clicking on them. This only works when the
     1998zoom and reposition modes (below) are not selected. Also note the
    19911999shoulder at ~6.3 <span class=SpellE>deg</span> that should be added to the
    19922000list. I skipped a couple of very weak peaks; the total list has 28 peaks.</p>
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