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Title: Neutron, fluorescence, and optical imaging: An in situ combination of complementary techniques

An apparatus which enables the simultaneous combination of three complementary imaging techniques, optical imaging, fluorescence imaging, and neutron radiography, is presented. While each individual technique can provide information on certain aspects of the sample and their time evolution, a combination of the three techniques in one setup provides a more complete and consistent data set. The setup can be used in transmission and reflection modes and thus with optically transparent as well as opaque samples. Its capabilities are illustrated with two examples. A polymer hydrogel represents a transparent sample and the diffusion of fluorescent particles into and through this polymer matrix is followed. In reflection mode, the absorption of solvent by a nile red-functionalized mesoporous silica powder and the corresponding change in fluorescent signal are studied.
Authors:
; ;  [1] ; ;  [2] ; ;  [3]
  1. Condensed Matter Physics Laboratory, Heinrich Heine University, 40225 Düsseldorf (Germany)
  2. Institute for Organic and Macromolecular Chemistry, Heinrich Heine University, 40225 Düsseldorf (Germany)
  3. Neutron Imaging and Activation Group, Paul Scherrer Institute, 5232 Villigen (Switzerland)
Publication Date:
OSTI Identifier:
22482784
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; ABSORPTION; BIOMEDICAL RADIOGRAPHY; DIFFUSION; FLUORESCENCE; NEUTRON RADIOGRAPHY; POLYMERS; REFLECTION; SIGNALS