<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-US"> <head> <title>(IUCr) CIF Definition save__diffrn_radiation.div_x_source</title> <link rel="stylesheet" type="text/css" href="../../itg.css" /> </head> <body> <!-- begin masthead --> <div class="masthead"> <table class="masthead"> <tr> <td class="masthead" width="30%"> <p class="title">DRAFT DICTIONARY</p> <p class="title"><font class="smalltitle"></font>CBF/imgCIF Extensions Dictionary</p> </td> <td class="masthead"> <p class="title">Draft version 1.5 for comment</p> </td> </tr> </table> </div> <!-- end masthead --> <hr> <H1> <a href="http://www.iucr.org/iucr-top/welcome.html"> <img alt="[IUCr Home Page]" src="../html_graphics/iucrhome.jpg" ALIGN=MIDDLE></a> <a href="http://www.iucr.org/iucr-top/cif/home.html"> <img alt="[CIF Home Page]" src="../html_graphics/cifhome.jpg" ALIGN=MIDDLE></a> <a href="cbf_definition_rev.html"><IMG SRC="../html_graphics/CBFbutton.jpg" ALT="[CBF/imgCIF]" ALIGN=MIDDLE></a> <a href="CBFlib.html"><IMG SRC="../html_graphics/cbflibbutton.jpg" ALT="[CBFlib]" ALIGN=MIDDLE></a> </H1> <hr> <!-- begin navbar --> <div class="navbar"> <table class="navbar"> <tr> <td><a class="navbar" href="index.html">Contents</a></td> </tr> </table> </div> <!-- end navbar --> <p class="index"><a class="index" href="index.html">Index</a></p> <h5>Image dictionary (imgCIF) version 1.5.4</h5> <h1>_diffrn_radiation.div_x_source</h1><b>Name:</b><br /><tt class="cifdefinition">'_diffrn_radiation.div_x_source'</tt> <p><b>Definition:</b></p><pre class="cifdefinition"> Beam crossfire in degrees parallel to the laboratory X axis (see AXIS category). This is a characteristic of the X-ray beam as it illuminates the sample (or specimen) after all monochromation and collimation. This is the standard uncertainty (e.s.d.) of the directions of photons in the XZ plane around the mean source beam direction. Note that for some synchrotrons this value is specified in milliradians, in which case a conversion is needed. To convert a value in milliradians to a value in degrees, multiply by 0.180 and divide by \p. </pre> <p><b>Type:</b> float</p> <p class="pack"><b>Mandatory item:</b> no</p> <p class="pack"><b>Category:</b> <a href="Cdiffrn_radiation.html" class="catlink">diffrn_radiation</a></p> <h4 align=left> HTML version of draft dictionary created by modified version of makedicthtml by B. McMahon from modified version of imgCIF dcitionary 1.3.2 which is subject to the following copyright: </h4> <!-- begin copyright --> <div class="copyright"> <p class="copyright">Copyright © 2005 International Union of Crystallography</p> </div> <!-- end copyright --> </body> </html>