Changeset 7034fc0 in sasview for sansmodels/src/sans/models/media
- Timestamp:
- Sep 6, 2012 3:33:47 PM (12 years ago)
- Branches:
- master, ESS_GUI, ESS_GUI_Docs, ESS_GUI_batch_fitting, ESS_GUI_bumps_abstraction, ESS_GUI_iss1116, ESS_GUI_iss879, ESS_GUI_iss959, ESS_GUI_opencl, ESS_GUI_ordering, ESS_GUI_sync_sascalc, costrafo411, magnetic_scatt, release-4.1.1, release-4.1.2, release-4.2.2, release_4.0.1, ticket-1009, ticket-1094-headless, ticket-1242-2d-resolution, ticket-1243, ticket-1249, ticket885, unittest-saveload
- Children:
- 8d0ec40
- Parents:
- 0ed400d
- File:
-
- 1 edited
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sansmodels/src/sans/models/media/model_functions.html
rb82e536 r7034fc0 6918 6918 <p> </p> 6919 6919 <p> Note: This model was implemented by an interested user.</p> 6920 <p style="margin-left: 0.55in; text-indent: -0.3in;"><strong><span style="font-size: 14pt;">3.2 8.</span></strong><strong><span style="font-size: 7pt;"> </span></strong><a name="GelFitModel"></a><strong><span style="font-size: 14pt;">GelFitModel</span></strong></p>6920 <p style="margin-left: 0.55in; text-indent: -0.3in;"><strong><span style="font-size: 14pt;">3.29.</span></strong><strong><span style="font-size: 7pt;"> </span></strong><a name="GelFitModel"></a><strong><span style="font-size: 14pt;">GelFitModel</span></strong></p> 6921 6921 <p> Unlike a concentrated polymer solution, the fine-scale polymer distribution in a gel involves at least two characteristic length scales, a shorter correlation length (a1) to describe the rapid fluctuations in the position of the polymer chains that ensure thermodynamic equilibrium, and a longer distance (denoted here as a2) needed to account for the static accumulations of polymer pinned down by junction points or clusters of such points. The letter is derived from a simple Guinier function.</p> 6922 6922 <p style="margin-left: 0.55in;">The scattered intensity I(Q) is then calculated as:</p> … … 7019 7019 <p style="margin-left: 0.25in;">Simon Mallam, Ferenc Horkay, Anne-Marie Hecht, Adrian R. Rennie, Erik Geissler, Macromolecules 1991, 24, 543-548.</p> 7020 7020 <p> </p> 7021 <p style="margin-left: 0.55in; text-indent: -0.3in;"><strong><span style="font-size: 14pt;">3. 29.</span></strong> <strong> <span style="font-size: 7pt;"> </span> </strong> <strong> <span style="font-size: 14pt;"><a name="StarPolymer"></a><a name="StarPolymerModel"></a>Star Polymer with Gaussian Statistics</span> </strong></p>7021 <p style="margin-left: 0.55in; text-indent: -0.3in;"><strong><span style="font-size: 14pt;">3.30.</span></strong> <strong> <span style="font-size: 7pt;"> </span> </strong> <strong> <span style="font-size: 14pt;"><a name="StarPolymer"></a><a name="StarPolymerModel"></a>Star Polymer with Gaussian Statistics</span> </strong></p> 7022 7022 <p style="margin-left: 0.25in;">For a star with <em>f</em> arms:</p> 7023 7023 <p style="text-align: center;" align="center"><span style="font-size: 12pt; font-family: 'Times New Roman','serif'; position: relative; top: 4.5pt;"><img src="img/star1.png" alt="" /></span></p>
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