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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Dear Fernan,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">That sounds sensible in as far as XMCD (and XMLD) is XAS with different values for field and/or polarization, both of which are documented.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">We have an issue with magnetic_field in that the possible directions are currently very restricted. This probably needs to be changed.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Steve<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> NeXus <nexus-bounces@shadow.nd.rl.ac.uk>
<b>On Behalf Of </b>Fernan Saiz via NeXus<br>
<b>Sent:</b> 16 March 2023 09:37<br>
<b>To:</b> nexus@nexusformat.org<br>
<b>Cc:</b> Fernan Saiz <fsaiz@cells.es><br>
<b>Subject:</b> [Nexus] Using NXxas for XMCD experiments<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p><span style="font-size:13.5pt">Dear Nexus community,</span><o:p></o:p></p>
<p><span style="font-size:13.5pt">I was wondering if any member here has been used
<a href="https://manual.nexusformat.org/classes/applications/NXxas.html">NXxas</a> for XMCD experiments given that XMCD can be assumed to be the difference of two XAS spectra obtained under plus and minus magnetic fields and divided their sum. The reason behind
my question is that I see much simpler to add the information about the magnetic field by filling out e.g.
<span class="highlighted"><b>magnetic</b></span><strong><span style="font-family:"Calibri",sans-serif">_field
</span></strong>in the NXsample rather than coming up with a new application definition. The former option can be also complemented by providing information about the magnet (e.g. NXquadrupole_magnet).
</span><o:p></o:p></p>
<p><span style="font-size:13.5pt">Any thoughts would be welcomed.</span><o:p></o:p></p>
<p><span style="font-size:13.5pt">Sincerely,</span><o:p></o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p><a href="https://www.albasynchrotron.es/en/"><span style="text-decoration:none"><img border="0" width="118" height="59" style="width:1.2291in;height:.6145in" id="Picture_x0020_1" src="cid:image001.png@01D957ED.E8485360"></span></a><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#112E50">Fernan Saiz, PhD
</span></b><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Scientific Data Management Engineering - Computing Division
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">ALBA SYNCHROTRON LIGHT SOURCE</span></b><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><a href="https://www.albasynchrotron.es/en/about/coming-to-alba" target="_blank">Carrer de la Llum 2-26 | 08290 | Cerdanyola del Vallès| Barcelona | Spain
</a><br>
(+34) 93 592 4075 | <a href="mailto:fsaiz@cells.es">fsaiz@cells.es</a> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;color:#112E50"><a href="http://www.albasynchrotron.es" target="_blank">www.albasynchrotron.es</a></span></b><b><span style="font-size:7.5pt;color:#112E50"> |
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