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3 October 2019 Fundamentals of neutron waveguides: a proposal for slow neutron beams confinement and applications
Maria L. Padilla, Ignacio Molina de la Peña, Ramón F. Álvarez-Estrada
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Proceedings Volume 11207, Fourth International Conference on Applications of Optics and Photonics; 112072I (2019) https://doi.org/10.1117/12.2530567
Event: IV International Conference on Applications of Optics and Photonics (AOP 2019), 2019, Lisbon, Portugal
Abstract
Neutron optics is the branch of quantum physics devoted to the study of the optical properties of slow neutrons and their behavior as wave-particles. Slow neutrons beams (with typical energy the order of 0.025 eV, known as thermal neutrons, and also smaller) can propagate confined in guides of various transverse dimensions, longitude and geometries, under total internal reflection conditions, like in the case of classical optical waveguides. We study the properties and possible applications of neutron waveguides with small transverse dimensions. In particular, we have implemented a new algorithm to simulate neutron beams as they are confined in particular waveguides. The results, obtained from a new analytical formalism, are compared with standard numerical methods as the FDTD and, then, enhance the feasibility for recreating the beam structure as the later propagates inside the waveguide.
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Maria L. Padilla, Ignacio Molina de la Peña, and Ramón F. Álvarez-Estrada "Fundamentals of neutron waveguides: a proposal for slow neutron beams confinement and applications", Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 112072I (3 October 2019); https://doi.org/10.1117/12.2530567
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KEYWORDS
Waveguides
Wave propagation
Numerical simulations
Beam propagation method
Radio propagation
Reflection
Finite-difference time-domain method
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