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Updated: Jun 4, 2025
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Neutron Radiography and Computed Tomography of Biological Systems at the Oak Ridge National Laboratory's High Flux Isotope Reactor
Published on: May 7, 2021
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Comparison of Graphites Intercalated with Fluorine as Slow Neutron Reflectors
Batiste Clavier1, Valentin Czamler2, Marc Dubois1
1Clermont Auvergne INP, Université Clermont Auvergne, 63178 Aubière, France.
Materials (Basel, Switzerland)
|December 17, 2024
Summary
This study enhances neutron reflectors using Bragg scattering in graphite crystals. Fluorine-intercalated graphite samples demonstrate high neutron reflection efficiency, aiding in optimal material selection for neutron sources.
Area of Science:
- Materials Science
- Nuclear Physics
- Solid State Physics
Background:
- Neutron reflectors are crucial for enhancing neutron sources and delivery systems.
- Bragg scattering in crystals with large interplanar distances offers a promising method for neutron reflection.
Purpose of the Study:
- To further develop neutron reflector methods using Bragg scattering.
- To compare the neutron interaction cross sections of differently prepared fluorine intercalated graphites.
- To evaluate the neutron reflection efficiency of these graphite samples.
Main Methods:
- Neutron interaction total cross section measurements as a function of neutron wavelength.
- Utilizing Bragg scattering in fluorine intercalated graphite crystals.
- Analysis of neutron reflectivity across the neutron reflectivity gap.
Main Results:
- All tested fluorine intercalated graphite samples exhibited high reflection efficiency.
- Effective neutron reflection was observed across and beyond the neutron reflectivity gap.
- The study identified optimal intercalation methods for graphite-based neutron reflectors.
Conclusions:
- Fluorine intercalated graphites are effective neutron reflectors.
- The preparation method influences the neutron interaction properties of graphite.
- This research provides insights for selecting optimal materials and methods for neutron reflector applications.
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