Changes between Version 1 and Version 2 of Tutorials/Swedness/Lab1B


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Timestamp:
Aug 22, 2018 5:49:22 AM (6 years ago)
Author:
ajj
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  • Tutorials/Swedness/Lab1B

    v1 v2  
    33||= **Table of Contents** =|| 
    44|| [#section4 4. Rapid Evaluation of SANS data] || 
    5 ||   [#section31 4.1 Background Information] || 
     5||   [#section41 4.1 Background Information] || 
    66||   [#section42 4.2 Evaluation of the SANS data] || 
    7 || 
     7||.  [#section43 4.3 Guiner and Kratky Plots] || 
    88 
    99== [=#section4 5. Rapid Evaluation of SANS data] == 
    1010 
    1111This part of the exercise will use the same real SANS data as the last exercise - taken from a study of surfactant self assembly in deep eutectic solvents (DES).  
     12 
     13If you are continuing directly from the first part of the exercise - "Familiarisation with SasView and Data Handling" you can skip to TASK 17, otherwise start with TASK 10. 
    1214 
    1315{{{ 
    … …  
    5456You will now load the background subtracted data into !SasView and make a plot in order to visually inspect the scattering curves.  
    5557 
    56 If you are continuing directly from the first part of the exercise - "Familiarisation with SasView and Data Handling" you can skip to TASK 18, otherwise start with TASK 15. 
    57  
    5858{{{ 
    5959#!div style="background: lightblue" 
    60 [=#task15 **TASK 15:**] Restart !SasView 
     60[=#task15 **TASK 14:**] Restart !SasView 
    6161 
    6262Before starting this part of the exercise, you should have a clean !SasView instance. Quit !SasView and restart it. 
    … …  
    6565{{{ 
    6666#!div style="background: lightblue" 
    67 [=#task16 **TASK 16:**] Click on the "Load Data" button in the Data Explorer 
     67[=#task16 **TASK 15:**] Click on the "Load Data" button in the Data Explorer 
    6868 
    6969Locate the folder where you placed the data, select all the files in the "subtracted" folder and click "Open" in the dialog. 
    … …  
    7777{{{ 
    7878#!div style="background: lightblue" 
    79 [=#task17 **TASK 17:**] Plot the loaded data 
     79[=#task17 **TASK 16:**] Plot the loaded data 
    8080 
    8181Make sure that all the datasets have check marks next to them in the Available Data section of the Data Explorer, as shown above. 
    … …  
    9090{{{ 
    9191#!div style="background: lightblue" 
    92 [=#task18 **TASK 18:**] Examining the Data. 
     92[=#task18 **TASK 17:**] Examining the Data. 
    9393 
    9494Visually inspect the data, zooming in and making additional plots as needed. 
    … …  
    102102 
    103103 
    104 === [=#section35 3.5 Fitting the data] === 
     104=== [=#section43 4.3 Guiner and Kratky Plots] === 
    105105{{{ 
    106106#!div style="background: lightblue" 
    107 [=#task19 **TASK 19:**] Fitting the lowest concentration data. 
     107[=#task19 **TASK 18:**] Guiner Analysis 
    108108 
    109109Select the lowest concentration data only in the data explorer by ensuring only 0p2hSDS_dChCldUrea_sub.txt has a check mark next to it and click “Send to" fitting. 
    110110 
    111 * Select the model for the structure you predicted for this dataset.  
    112   * How does it compare to the data? 
    113 * Fill in parameters you know and adjust the others to see how close you get to the data. 
    114 * Select parameters to fit and run the fit by clicking "Fit" at the bottom of the fitting panel. 
    115   * Do you get a good fit? 
    116   * Are the parameters you get physically reasonable? 
     111* Perform a guinier analysis 
    117112 
    118113}}} 
    … …  
    121116{{{ 
    122117#!div style="background: lightblue" 
    123 [=#task20 **TASK 20:**] Fitting the other data, starting with the 7.5 wt% data set. 
     118[=#task20 **TASK 19:**] Kratky Plot 
    124119 
    125 Repeat for other concentrations 
    126 * Does the same model fit all data? 
    127 * What is consistent between datasets? What is different?  
     120Select the lowest concentration data only in the data explorer by ensuring only 0p2hSDS_dChCldUrea_sub.txt has a check mark next to it and click “Send to" fitting. 
    128121 
     122* Make a Kratky plot 
    129123 
    130 }}} 
    131  
    132 {{{ 
    133 #!div style="background: lightblue" 
    134 [=#task21 **TASK 21:**] Summarising the results 
    135  
    136 Having fitted all the data sets you can now summarise the results and comment on the trends you observe. 
    137124 
    138125}}} 
    … …  
    140127== What's Next? == 
    141128 
    142 You can now move on to finishing your lab report - details are here : [wiki:KEMM37/Report KEMM37 Lab 1 Report] 
     129You can now move on to the next exercise [wiki:Swedness/Lab1C SLD Calculation and Data Fitting] 
    143130 
    144131== [=#resources Resources] ==