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  • sasmodels/models/flexible_cylinder.py

    rdb1d9d5 r598a354  
    3333and solvent respectively. 
    3434 
    35 Our model uses the form factor calculations in reference [1] as implemented in a 
    36 c-library provided by the NIST Center for Neutron Research (Kline, 2006). This states: 
     35Our model uses the form factor calculations implemented in a c-library provided 
     36by the NIST Center for Neutron Research (Kline, 2006). This states: 
    3737 
    3838    'Method 3 With Excluded Volume' is used. 
     
    4141    pseudocontinuous limit. 
    4242    See equations (13,26-27) in the original reference for the details. 
    43  
    44 .. note:: 
    45  
    46     There are several typos in the original reference that have been corrected 
    47     by WRC [2]. Details of the corrections are in the reference below. Most notably 
    48  
    49     - Equation (13): the term $(1 - w(QR))$ should swap position with $w(QR)$ 
    50  
    51     - Equations (23) and (24) are incorrect; WRC has entered these into 
    52       Mathematica and solved analytically. The results were then converted to 
    53       code. 
    54  
    55     - Equation (27) should be $q0 = max(a3/(Rg^2)^{1/2},3)$ instead of 
    56       $max(a3*b(Rg^2)^{1/2},3)$ 
    57  
    58     - The scattering function is negative for a range of parameter values and 
    59       q-values that are experimentally accessible. A correction function has been 
    60       added to give the proper behavior. 
    61  
    62  
    63 **This is a model with complex behaviour depending on the ratio of** $L/b$ **and the 
    64 reader is strongly encouraged to read reference [1] before use.** 
    6543 
    6644References 
     
    8058`flexible_cylinder.c <https://github.com/SasView/sasmodels/blob/master/sasmodels/models/flexible_cylinder.c>`_ 
    8159 
    82 `wrc_cyl.c <https://github.com/SasView/sasmodels/blob/master/sasmodels/models/lib/wrc_cyl.c>`_ 
    83  
    8460Authorship and Verification 
    8561---------------------------- 
    8662 
    87 * **Author:** 
    88 * **Last Modified by:** 
    89 * **Last Reviewed by:** Steve King **Date:** March 26, 2019 
     63* **Author:**  
     64* **Last Modified by:**  
     65* **Last Reviewed by:**  
    9066* **Source added by :** Steve King **Date:** March 25, 2019 
    9167""" 
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