# Changeset e7e9231 in sasmodels

Ignore:
Timestamp:
Sep 16, 2018 9:32:26 PM (12 months ago)
Branches:
ticket_1156
Children:
0b906ea
Parents:
78f8308
Message:

Correct/update paracrystal docs

Correct BCC doc for lattice volume fraction and update all paracrystal
models docs reference and authorship sections.

Location:
sasmodels/models
Files:
3 edited

### Legend:

Unmodified
 r6530963 #note - calculation requires double precision r""" Definition ---------- Calculates the scattering from a **face-centered cubic lattice** with paracrystalline distortion. Thermal vibrations are considered to be negligible, and the size of the paracrystal is infinitely large. Paracrystalline distortion is assumed to be isotropic and characterized by a Gaussian distribution. Definition ---------- a Gaussian distribution. The scattering intensity $I(q)$ is calculated as is the paracrystalline structure factor for a face-centered cubic structure. Equation (1) of the 1990 reference is used to calculate $Z(q)$, using equations (23)-(25) from the 1987 paper for $Z1$, $Z2$, and $Z3$. Equation (1) of the 1990 reference\ [#CIT1990]_ is used to calculate $Z(q)$, using equations (23)-(25) from the 1987 paper\ [#CIT1987]_ for $Z1$, $Z2$, and $Z3$. The lattice correction (the occupied volume of the lattice) for a ---------- Hideki Matsuoka et. al. *Physical Review B*, 36 (1987) 1754-1765 (Original Paper) .. [#CIT1987] Hideki Matsuoka et. al. *Physical Review B*, 36 (1987) 1754-1765 (Original Paper) .. [#CIT1990] Hideki Matsuoka et. al. *Physical Review B*, 41 (1990) 3854 -3856 (Corrections to FCC and BCC lattice structure calculation) Hideki Matsuoka et. al. *Physical Review B*, 41 (1990) 3854 -3856 (Corrections to FCC and BCC lattice structure calculation) Authorship and Verification ---------------------------- * **Author:** NIST IGOR/DANSE **Date:** pre 2010 * **Last Modified by:** Paul Butler **Date:** September 16, 2018 * **Last Reviewed by:** Paul Butler **Date:** September 16, 2018 """
 r6530963 r""" Calculates the scattering from a **simple cubic lattice** with Definition ---------- TCalculates the scattering from a **simple cubic lattice** with paracrystalline distortion. Thermal vibrations are considered to be negligible, and the size of the paracrystal is infinitely large. by a Gaussian distribution. Definition ---------- The scattering intensity $I(q)$ is calculated as he scattering intensity $I(q)$ is calculated as .. math:: $Z(q)$ is the paracrystalline structure factor for a simple cubic structure. Equation (16) of the 1987 reference is used to calculate $Z(q)$, using equations (13)-(15) from the 1987 paper for Z1, Z2, and Z3. Equation (16) of the 1987 reference\ [#CIT1987]_ is used to calculate $Z(q)$, using equations (13)-(15) from the 1987 paper\ [#CIT1987]_ for Z1, Z2, and Z3. The lattice correction (the occupied volume of the lattice) for a simple cubic Reference --------- Hideki Matsuoka et. al. *Physical Review B,* 36 (1987) 1754-1765 (Original Paper) Hideki Matsuoka et. al. *Physical Review B,* 41 (1990) 3854 -3856 (Corrections to FCC and BCC lattice structure calculation) .. [#CIT1987] Hideki Matsuoka et. al. *Physical Review B*, 36 (1987) 1754-1765 (Original Paper) .. [#CIT1990] Hideki Matsuoka et. al. *Physical Review B*, 41 (1990) 3854 -3856 (Corrections to FCC and BCC lattice structure calculation) Authorship and Verification ---------------------------- * **Author:** NIST IGOR/DANSE **Date:** pre 2010 * **Last Modified by:** Paul Butler **Date:** September 16, 2018 * **Last Reviewed by:** Paul Butler **Date:** September 16, 2018 """