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<html> <head>
<title>MCViNE example: Spin Wave</title>
<script language="javascript" type="text/javascript" src="flot/jquery.js"></script>
<script src="mcvine.js"></script>
<link rel="stylesheet" type="text/css" href="mcvine.css">
</head>

<body>

<div id="page" class="top">

<div class="navigation">
<a href="examples.html">&lt Examples</a>
</div>

<h1>Spin wave</h1>

<h2>Dynamical structure factor</h2>
The sample kernel is defined by the dispersion
$$
  E(h,k,l) = 2.563 \sqrt{1-\gamma_{Q_{//}} ^2}
$$
and dynamic structure factor
$$
  S(h,k,l) = \frac{1 - \gamma_{Q_{//}} } {2 \sqrt{ 1- \gamma^2_{Q_{//}} }}
$$
where
$\gamma_{Q_{//}} = cos(h\pi) cos(k\pi)$.

<h2>Experimental data</h2>
<a href="KVO/3d/view4.html">Web-based 3-D data viewer</a>
<br>
<a href="http://youtu.be/mBZJAlgLLFU">How to use the 3-D viewer:
slices</a>
<br>
<a href="http://youtu.be/liEX6VsZavM">How to use the 3-D viewer:
volume rendering </a>

<h2>I(h,E)</h2>
The MCViNE simulation accurately capture the asymmetry of the
resolution function along two lines originating from (010):

<table class="case-container">
  <tr>
    <td>
      Experimental
      <img class="figure"  src="KVO/exp-IhE.jpg" width="380px">
    </td>

    <td>
      Simulated
      <img class="figure"  src="KVO/sim-IhE.jpg" width="380px">
    </td>
  </tr>
</table>

It is also clear from this I(h) cut:
<img class="figure"  src="KVO/sim-I_h-E1k1.jpg" width="500px">
Black: simulation. Red: experimental. A constant back- ground was
added to the simulated cut data.

<div>
Collaborators: Mark Lumbsden and Barry Winn from ORNL.
</div>

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