Changes in src/sas/sasgui/perspectives/calculator/media/sld_calculator_help.rst [f93b473f:5ed76f8] in sasview
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src/sas/sasgui/perspectives/calculator/media/sld_calculator_help.rst
rf93b473f r5ed76f8 10 10 ----------- 11 11 12 The neutron scattering length density (SLD ) is defined as12 The neutron scattering length density (SLD, $\beta_N$) is defined as 13 13 14 SLD = (b_c1 + b_c2 + ... + b_cn) / Vm 14 .. math:: 15 15 16 where b_ci is the bound coherent scattering length of ith of n atoms in a molecule 17 with the molecular volume Vm 16 \beta_N = (b_{c1} + b_{c2} + ... + b_{cn}) / V_m 17 18 where $b_{ci}$ is the bound coherent scattering length of ith of n atoms in a molecule 19 with the molecular volume $V_m$. 18 20 19 21 .. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ … … 22 24 ---------------------------- 23 25 24 To calculate scattering length densities enter the empirical formula of a 26 To calculate scattering length densities enter the empirical formula of a 25 27 compound and its mass density and click "Calculate". 26 28 27 Entering a wavelength value is optional (a default value of 6.0 |Ang| will 29 Entering a wavelength value is optional (a default value of 6.0 |Ang| will 28 30 be used). 29 31 … … 38 40 * Parentheses can be nested, such as "(CaCO3(H2O)6)1". 39 41 40 * Isotopes are represented by their atomic number in *square brackets*, such 42 * Isotopes are represented by their atomic number in *square brackets*, such 41 43 as "CaCO[18]3+6H2O", H[1], or H[2]. 42 44 43 45 * Numbers of atoms can be integer or decimal, such as "CaCO3+(3HO0.5)2". 44 46 45 * The SLD of mixtures can be calculated as well. For example, for a 70-30 47 * The SLD of mixtures can be calculated as well. For example, for a 70-30 46 48 mixture of H2O/D2O write "H14O7+D6O3" or more simply "H7D3O5" (i.e. this says 47 49 7 hydrogens, 3 deuteriums, and 5 oxygens) and enter a mass density calculated 48 50 on the percentages of H2O and D2O. 49 51 50 * Type "C[13]6 H[2]12 O[18]6" for C(13)6H(2)12O(18)6 (6 Carbon-13 atoms, 12 52 * Type "C[13]6 H[2]12 O[18]6" for C(13)6H(2)12O(18)6 (6 Carbon-13 atoms, 12 51 53 deuterium atoms, and 6 Oxygen-18 atoms). 52 54 53 55 .. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ 54 56 55 .. note:: This help document was last changed by Steve King, 01May201557 .. note:: This help document was last changed by Paul Kienzle, 05Apr2017 56 58
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