NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Contrast variation in spin-echo small angle neutron scattering
Published
Author(s)
Xin Li, Bin Wu, Yun Liu, Roger Pynn, Chwen-Yang Shew, Gregory S. Smith, Kenneth W. Herwig, J. Lee Robertson, Wei-Ren Chen, Li Liu
Abstract
The use of contrast variation in spin-echo small angle neutron scattering (SESANS) experiments is discussed for the case of colloidal structural investigation. Based on the calculations for several model systems, we find that the contrast variation SESANS technique is not sensitive to the structural characteristics of collodial suspensions consisting of particles with uniform scattering lenght density profiles. However, to resolve structural heterogeneity, at both intra- and inter-collodial length scales, is clearly demonstrated. The prospect of using this new technique to investigate structural information that is difficult to probe in other ways is also explored.
Li, X.
, Wu, B.
, Liu, Y.
, Pynn, R.
, Shew, C.
, Smith, G.
, Herwig, K.
, Robertson, J.
, Chen, W.
and Liu, L.
(2012),
Contrast variation in spin-echo small angle neutron scattering, Journal of Physics: Condensed Matter, [online], https://doi.org/10.1088/0953-8984/24/6/064115, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910673
(Accessed October 5, 2025)