SANS measurements of a family of tripodal organo-silicon dendrimer molecules using the IPNS SAND and the NCNR NG3 SANS instruments are presented. Variations in the scattering curves are compared for solutions of the dendrimers at multiple concentrations in d-heptane, d-DCM, and d-toluene. Models of both the particle form factor and the structure factor are presented. The measurements suggest a distinct difference between the size and behavior of the highest generation dendrimer in two of the solvents (d-DCM and d-toluene) as compared to a third (d-heptane). Additionally, the dendrimer molecules appear to be forming short chains in solution.After obtaining the six NeXus files described above, it is necessary to run the SANSreduce.iss script. When executed, this script will output three files in the format b###.dat, s###.dat, and sn###.dat. All three files ... There is an excellent tutorial there by Tom Worlton as well as a fairly comprehensive usera#39;s manual. Providedanbsp;...
|Title||:||Design of the Small Angle Neutron Scattering Instrument at the Indiana University Low Energy Neutron Source|
|Publisher||:||ProQuest - 2007|