Observation of concentration fluctuations in polymer gels performed by neutron spin echo

Satoshi Koizumi, Michael Monkenbusch, Dieter Richter, Dietmar Schwahn, Bela Farago, Masahiko Annaka

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5 Citations (Scopus)

Abstract

We applied these methods of small-angle neutron scattering (SANS) and neutron spin echo (NSE) on a swollen poly (N-isopropyl acrylamide) (NIPA) gel in order to observe the elastic scattering of frozen concentration fluctuations due to crosslinks. We successfully obtained the structure factor for the frozen concentration fluctuations in a q-domain of q > 0: 01 A-1; while in a q-domain of q < 0: 01 A-1; this attempt failed due to the limited performance of the q-resolution and the Fourier time tF of the current specifications of the NSE spectrometers. This technical hurdle for the spectrometer should be overcome on an intensified neutron source for the next generation, realizing tF of µs-order and the q-resolution down closer to 0: 001 A-1.

Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalJournal of Neutron Research
Volume10
Issue number3-4
DOIs
Publication statusPublished - Jan 1 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

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