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56  <div class="section" id="bepolyelectrolyte">
57<h1>BEPolyelectrolyte<a class="headerlink" href="#bepolyelectrolyte" title="Permalink to this headline">¶</a></h1>
58<div class="section" id="module-sans.models.BEPolyelectrolyte">
59<span id="sans-models-bepolyelectrolyte"></span><h2><a class="reference internal" href="#module-sans.models.BEPolyelectrolyte"><tt class="xref py py-mod docutils literal"><span class="pre">sans.models.BEPolyelectrolyte</span></tt></a><a class="headerlink" href="#module-sans.models.BEPolyelectrolyte" title="Permalink to this headline">¶</a></h2>
60<p>Provide F(x) = K*1/(4*pi*Lb*(alpha)^(2))*(q^(2)+k2)/(1+(r02)^(2))*(q^(2)+k2)                       <a href="#id1"><span class="problematic" id="id2">*</span></a>(q^(2)-(12*h*C/b^(2)))
61BEPolyelectrolyte as a BaseComponent model</p>
62<dl class="class">
63<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte">
64<em class="property">class </em><tt class="descclassname">sans.models.BEPolyelectrolyte.</tt><tt class="descname">BEPolyelectrolyte</tt><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte" title="Permalink to this definition">¶</a></dt>
65<dd><p>Bases: <a class="reference internal" href="BaseComponent.html#sans.models.BaseComponent.BaseComponent" title="sans.models.BaseComponent.BaseComponent"><tt class="xref py py-class docutils literal"><span class="pre">sans.models.BaseComponent.BaseComponent</span></tt></a></p>
66<p>Class that evaluates a BEPolyelectrolyte.</p>
67<p>F(x) = K*1/(4*pi*Lb*(alpha)^(2))*(q^(2)+k2)/(1+(r02)^(2))*(q^(2)+k2)                       <a href="#id3"><span class="problematic" id="id4">*</span></a>(q^(2)-(12*h*C/b^(2)))</p>
68<dl class="docutils">
69<dt>The model has Eight parameters: </dt>
70<dd>K        =  Constrast factor of the polymer
71Lb       =  Bjerrum length
72H        =  virial parameter
73B        =  monomer length
74Cs       =  Concentration of monovalent salt
75alpha    =  ionazation degree
76C        = polymer molar concentration
77bkd      = background</dd>
78</dl>
79<dl class="method">
80<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.calculate_ER">
81<tt class="descname">calculate_ER</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.calculate_ER" title="Permalink to this definition">¶</a></dt>
82<dd></dd></dl>
83
84<dl class="method">
85<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.clone">
86<tt class="descname">clone</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.clone" title="Permalink to this definition">¶</a></dt>
87<dd>Returns a new object identical to the current object</dd></dl>
88
89<dl class="method">
90<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.evalDistribution">
91<tt class="descname">evalDistribution</tt><big>(</big><em>qdist</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.evalDistribution" title="Permalink to this definition">¶</a></dt>
92<dd><p>Evaluate a distribution of q-values.</p>
93<ul>
94<li><p class="first">For 1D, a numpy array is expected as input:</p>
95<blockquote>
96<p>evalDistribution(q)</p>
97</blockquote>
98</li>
99</ul>
100<p>where q is a numpy array.</p>
101<ul class="simple">
102<li>For 2D, a list of numpy arrays are expected: [qx_prime,qy_prime],
103where 1D arrays,</li>
104</ul>
105<p>qx_prime = [ qx[0], qx[1], qx[2], ....]
106and
107qy_prime = [ qy[0], qy[1], qy[2], ....]</p>
108<p>Then get
109q = numpy.sqrt(qx_prime^2+qy_prime^2)</p>
110<p>that is a qr in 1D array;
111q = [q[0], q[1], q[2], ....]</p>
112<table class="docutils field-list" frame="void" rules="none">
113<col class="field-name" />
114<col class="field-body" />
115<tbody valign="top">
116<tr class="field"><th class="field-name">Note :</th><td class="field-body"><p class="first">Due to 2D speed issue, no anisotropic scattering
117is supported for python models, thus C-models should have</p>
118<blockquote class="last">
119<p>their own evalDistribution methods.</p>
120</blockquote>
121</td>
122</tr>
123</tbody>
124</table>
125<p>The method is then called the following way:</p>
126<p>evalDistribution(q)
127where q is a numpy array.</p>
128<table class="docutils field-list" frame="void" rules="none">
129<col class="field-name" />
130<col class="field-body" />
131<tbody valign="top">
132<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
133<li><strong>qdist</strong> &#8211; ndarray of scalar q-values or list [qx,qy]
134where qx,qy are 1D ndarrays</li>
135</ul>
136</td>
137</tr>
138</tbody>
139</table>
140</dd></dl>
141
142<dl class="method">
143<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getDispParamList">
144<tt class="descname">getDispParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getDispParamList" title="Permalink to this definition">¶</a></dt>
145<dd>Return a list of all available parameters for the model</dd></dl>
146
147<dl class="method">
148<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParam">
149<tt class="descname">getParam</tt><big>(</big><em>name</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParam" title="Permalink to this definition">¶</a></dt>
150<dd><p>Set the value of a model parameter</p>
151<table class="docutils field-list" frame="void" rules="none">
152<col class="field-name" />
153<col class="field-body" />
154<tbody valign="top">
155<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
156<li><strong>name</strong> &#8211; name of the parameter</li>
157</ul>
158</td>
159</tr>
160</tbody>
161</table>
162</dd></dl>
163
164<dl class="method">
165<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParamList">
166<tt class="descname">getParamList</tt><big>(</big><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParamList" title="Permalink to this definition">¶</a></dt>
167<dd>Return a list of all available parameters for the model</dd></dl>
168
169<dl class="method">
170<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParamListWithToken">
171<tt class="descname">getParamListWithToken</tt><big>(</big><em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParamListWithToken" title="Permalink to this definition">¶</a></dt>
172<dd></dd></dl>
173
174<dl class="method">
175<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParamWithToken">
176<tt class="descname">getParamWithToken</tt><big>(</big><em>name</em>, <em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.getParamWithToken" title="Permalink to this definition">¶</a></dt>
177<dd></dd></dl>
178
179<dl class="method">
180<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.is_fittable">
181<tt class="descname">is_fittable</tt><big>(</big><em>par_name</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.is_fittable" title="Permalink to this definition">¶</a></dt>
182<dd><p>Check if a given parameter is fittable or not</p>
183<table class="docutils field-list" frame="void" rules="none">
184<col class="field-name" />
185<col class="field-body" />
186<tbody valign="top">
187<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
188<li><strong>par_name</strong> &#8211; the parameter name to check</li>
189</ul>
190</td>
191</tr>
192</tbody>
193</table>
194</dd></dl>
195
196<dl class="method">
197<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.run">
198<tt class="descname">run</tt><big>(</big><em>x=0.0</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.run" title="Permalink to this definition">¶</a></dt>
199<dd>Evaluate the model
200&#64;param x: input q-value (float or [float, float] as [r, theta])
201&#64;return: (debye value)</dd></dl>
202
203<dl class="method">
204<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.runXY">
205<tt class="descname">runXY</tt><big>(</big><em>x=0.0</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.runXY" title="Permalink to this definition">¶</a></dt>
206<dd>Evaluate the model
207&#64;param x: input q-value (float or [float, float] as [qx, qy])
208&#64;return: debye value</dd></dl>
209
210<dl class="method">
211<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.setParam">
212<tt class="descname">setParam</tt><big>(</big><em>name</em>, <em>value</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.setParam" title="Permalink to this definition">¶</a></dt>
213<dd><p>Set the value of a model parameter</p>
214<table class="docutils field-list" frame="void" rules="none">
215<col class="field-name" />
216<col class="field-body" />
217<tbody valign="top">
218<tr class="field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
219<li><strong>name</strong> &#8211; name of the parameter</li>
220<li><strong>value</strong> &#8211; value of the parameter</li>
221</ul>
222</td>
223</tr>
224</tbody>
225</table>
226</dd></dl>
227
228<dl class="method">
229<dt id="sans.models.BEPolyelectrolyte.BEPolyelectrolyte.setParamWithToken">
230<tt class="descname">setParamWithToken</tt><big>(</big><em>name</em>, <em>value</em>, <em>token</em>, <em>member</em><big>)</big><a class="headerlink" href="#sans.models.BEPolyelectrolyte.BEPolyelectrolyte.setParamWithToken" title="Permalink to this definition">¶</a></dt>
231<dd></dd></dl>
232
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