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Difference between revisions of "Serial reflection conditions"

From Online Dictionary of Crystallography

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<Font color="blue"> Conditions de réflexion sériales </Font> (''Fr''). <Font color="black"> Condizioni di riflessione seriali </Font>(''It'')
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<font color="blue">Conditions de réflexion sériales</font> (''Fr''). <font color="red">Serielle Auslöschungen</font> (''Ge''). <font color="black">Condizioni di riflessione seriali</font> (''It''). <font color="green">Ausencias seriales</font> (''Sp'').
  
 
== Definition ==
 
== Definition ==
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<table border cellspacing=0 cellpadding=5 align=center>
 
<table border cellspacing=0 cellpadding=5 align=center>
 
<tr>  
 
<tr>  
<th> type of reflection</th><th>reflection condition</th> <th> screw vector</th><th> screw axis</th> </tr>
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<th>Type of reflection</th><th>Reflection condition</th> <th>Screw vector</th><th>Screw axis</th> </tr>
 
<tr> <td rowspan=2>00''l''</td> <td>''l'' = 2 ''n''</td> <td>'''c'''/2</td><td> 2<sub>1</sub>; 4<sub>2</sub></td></tr>
 
<tr> <td rowspan=2>00''l''</td> <td>''l'' = 2 ''n''</td> <td>'''c'''/2</td><td> 2<sub>1</sub>; 4<sub>2</sub></td></tr>
 
<tr>  
 
<tr>  
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</table>
 
</table>
  
The serial reflection conditions are listed in Table 2.2.13.2 of ''International Tables of Crystallography, Volume A''.  
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The serial reflection conditions are listed in Table 2.1.3.7 of ''International Tables for Crystallography, Volume A'', 6th edition.  
  
 
==See also ==
 
==See also ==
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*[[Reflection conditions]]
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*Chapter 2.1.3.3 of ''International Tables for Crystallography, Volume A'', 6th edition
  
[[reflection conditions]]<br>
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[[Category:X-rays]]
Section 2.2.13 of ''International Tables of Crystallography, Volume A''
 
 
 
[[Category:X-rays]]<br>
 

Latest revision as of 08:43, 20 November 2017

Conditions de réflexion sériales (Fr). Serielle Auslöschungen (Ge). Condizioni di riflessione seriali (It). Ausencias seriales (Sp).

Definition

The serial reflection conditions are the general reflection conditions due to the presence of screw axes. The resulting conditions apply only to one-dimensional sets of reflections, i.e. reciprocal-lattice rows containing the origin (such as h00, 0k0, 00l). For instance, for a screw axis parallel to [001], the reflection conditions are:

Type of reflectionReflection condition Screw vectorScrew axis
00l l = 2 n c/2 21; 42
l = 4 nc/4 41; 43
000l l = 2 n c/2 63
l = 3 n c/3 41; 31; 32; 62; 64
l = 6 nc/661;65

The serial reflection conditions are listed in Table 2.1.3.7 of International Tables for Crystallography, Volume A, 6th edition.

See also