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    <p><font size="4">Dear Steve,</font></p>
    <p><font size="4">Yes, I agree with you. It would be probably
        'enough' to add the fields </font><font size="4"><strong>flux </strong>and
      </font><font size="4"><strong>incident_<span class="highlighted">polarization
          </span></strong><span class="highlighted">of the magnetic
          field </span>from NXbeam to NXsample. NXbeam is for the
        incident photons.<br>
      </font></p>
    <p><font size="4">Regards,</font></p>
    <p><font size="4"> - Fernan</font><br>
    </p>
    <div class="moz-cite-prefix">On 3/16/23 10:58, Collins, Steve
      (DLSLtd,RAL,SCI) via NeXus wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:DB9PR01MB8189520175E3808E0322E0A7A5BC9@DB9PR01MB8189.eurprd01.prod.exchangelabs.com">
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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>
        <div>
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            1.0pt;padding:3.0pt 0cm 0cm 0cm">
            <p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
                lang="EN-US"> NeXus
                <a class="moz-txt-link-rfc2396E" href="mailto:nexus-bounces@shadow.nd.rl.ac.uk"><nexus-bounces@shadow.nd.rl.ac.uk></a>
                <b>On Behalf Of </b>Fernan Saiz via NeXus<br>
                <b>Sent:</b> 16 March 2023 09:37<br>
                <b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:nexus@nexusformat.org">nexus@nexusformat.org</a><br>
                <b>Cc:</b> Fernan Saiz <a class="moz-txt-link-rfc2396E" href="mailto:fsaiz@cells.es"><fsaiz@cells.es></a><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"
              moz-do-not-send="true">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>
        <div>
          <p class="MsoNormal">-- <o:p></o:p></p>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
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                            width="118">
                            <p><a
                                href="https://www.albasynchrotron.es/en/"
                                moz-do-not-send="true"><span
                                  style="text-decoration:none"><img
                                    style="width:1.2291in;height:.6145in"
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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
                              </span><o:p></o:p></p>
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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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href="https://www.albasynchrotron.es/en/about/coming-to-alba"
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                                  style="font-size:9.0pt;color:#112E50"><a
                                    href="http://www.albasynchrotron.es"
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                                  style="font-size:7.5pt;color:#112E50">
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
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