Yanera

• Yanera ("Yet Another NEutron Reflectivity Analyzer") is a software package for calculating reflectivity curves. It provides an open-source C++ implementation of the Parratt formalism. Written by Thad Harroun (Brock University), with minor contributions from Kevin Yager.
  • Official site.

Example Input File (2007 format)

<?xml version="1.0"?>
<!DOCTYPE parratt SYSTEM "parratt.dtd">
<parratt type="parratt" do_fit="no">
  <output>
    <reflectivity>reflectivity.txt</reflectivity>
    <profile>profile.txt</profile>
    <q_min> 0.000</q_min>
    <q_max> 0.160</q_max>
    <num_q>300</num_q>
    <num_z>200</num_z>
  </output>
  <model>
    <bulk>
      <name>ambient</name>
      <thik fix="1">n/a</thik>
      <sigz fix="1">n/a</sigz>
      <rsld fix="1"> 0.000</rsld>
    </bulk>
    <layer>
      <name>PS</name>
      <thik fix="1">1000.000</thik>
      <sigz fix="1">40.0</sigz>
      <rsld fix="1"> 9.13</rsld>
    </layer>
    <layer>
      <name>Ge</name>
      <thik fix="1">19.700</thik>
      <sigz fix="1"> 5.000</sigz>
      <rsld fix="1"> 22.58</rsld>
      <isld fix="1"> 0.000</isld>
    </layer>
    <substrate>
      <name>glass</name>
      <thik fix="1">n/a</thik>
      <sigz fix="1"> 1.700</sigz>
      <rsld fix="1"> 22.58</rsld>
      <isld fix="1"> 0.000</isld>
    </substrate>
    <coverg fix="1"> 1.000</coverg>
    <backgd fix="1"> 0.000</backgd>
    <resoln type="dq/q"> 0.040</resoln>
  </model>
</parratt>

Example Input File (2008 format)

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE yanera SYSTEM "yanera.dtd">
<yanera>
<!-- ====================================================================== -->
  <miscellaneous_section>
    <write_results>YES</write_results>
    <write_profile>YES</write_profile>
    <write_reflectivity>YES</write_reflectivity>
    <write_slabs>YES</write_slabs>
    <q_min>0.0006</q_min>
    <q_max>0.21</q_max>
    <q_num>2001</q_num>
    <z_num>201</z_num>
    <quadrature_error>0.0005</quadrature_error>
    <quadrature_thik>5.0</quadrature_thik>
    <fit_do>NO</fit_do>
    <fit_weighting>WEIGHT_NONE</fit_weighting>
    <fit_iterations>500</fit_iterations>
    <fit_write_iterations>5</fit_write_iterations>
  </miscellaneous_section>
<!-- ====================================================================== -->
  <data_section>
<!-- ===== -->
    <data data_id="data0">
      <file_name>data0_l</file_name>
      <resolution>
        <type>RESOLUTION_NONE</type>
        <value/>
        <file_name/>
      </resolution>
    </data>
<!-- ===== -->
    <data data_id="data1">
      <file_name>data1_l</file_name>
      <resolution>
        <type>RESOLUTION_NONE</type>
        <value/>
        <file_name/>
      </resolution>
    </data>
<!-- ===== -->
    <data data_id="data2">
      <file_name>data2_l</file_name>
      <resolution>
        <type>RESOLUTION_NONE</type>
        <value/>
        <file_name/>
      </resolution>
    </data>
<!-- ===== -->
  </data_section>
<!-- ====================================================================== -->
  <model_section>
<!-- ===== -->
    <model_type>MODEL_LAYER</model_type>
<!-- ===== -->
    <model data_idref="data0">
      <name>Silicon in air</name>
      <polarized>POLARIZED_UNPOLARIZED</polarized>
      <bulk>
        <name>ambient</name>
        <rsld fix="YES">0</rsld>
      </bulk>
      <layer>
        <name>PS</name>
        <thik fix="YES">1000<max>2000</max></thik>
        <sigz fix="YES">40</sigz>
        <rsld fix="NO">9.0</rsld>
        <rmag fix="NO">0.0<min>0.0</min></rmag>
      </layer>
      <substrate>
        <name>glass</name>
        <sigz fix="YES">2</sigz>
        <rsld fix="YES">22.58</rsld>
      </substrate>
      <background fix="YES">0</background>
    </model>
<!-- ===== -->
    <model data_idref="data1">
      <polarized>POLARIZED_UP</polarized>
    </model>
<!-- ===== -->
    <model data_idref="data2">
      <polarized>POLARIZED_DOWN</polarized>
    </model>
<!-- ===== -->
  </model_section>
<!-- ====================================================================== -->
</yanera>