Monte-Carlo simulation of neutron transmission through nanocomposite materials for neutron-optics applications

Autor(en)

M. Blaickner, B. Demirel, Irena Drevensek-Olenik, Martin Fally, Peter Flauger, Peter Geltenbort, Y. Hasegawa, R. Kurinjimala, M. Ličen, Christian Pruner, Stephan Sponar, Yasuo Tomita, Jürgen Klepp

Abstrakt

Nanocomposites enable us to tune parameters that are crucial for use of such materials for neutron-optics applications. By careful choice of properties such as species (isotope) and concentration of contained nanoparticles, diffractive optical elements for long-wavelength neutrons are feasible. Nanocomposites for neutron optics have so far been tested successfully in protonated form, containing high amounts of H-1 atoms, which exhibits rather strong neutron absorption and incoherent scattering. At a future stage of development, chemicals containing H-1 could be replaced by components containing more favorable isotopes, such as H-2 or F-19. In this note, we present results of Monte-Carlo simulations of the transmissivity of various nanocomposite materials for thermal and very-cold neutron spectra. Our simulation results for deuterated and fluorinated nanocomposite materials predict the losses due to absorption and scattering to be as low as 2%, as well as the broadening of the beam cross section to be negligible.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Austrian Institute of Technology, Technische Universität Wien, University of Ljubljana, Jožef Stefan Institute (IJS), Institut Laue-Langevin (ILL), Paris-Lodron Universität Salzburg, The University of Electro-Communications

Journal

Nuclear Instruments & Methods in Physics Research. Section A. Accelerators, Spectrometers, Detectors, and Associated Equipment

Band

916

Seiten

154-157

Anzahl der Seiten

4

ISSN

0168-9002

DOI

https://doi.org/10.1016/j.nima.2018.11.074

Publikationsdatum

2018

Peer-reviewed

Ja

ÖFOS 2012

103021 Optik

Schlagwörter

ASJC Scopus Sachgebiete

Nuclear and High Energy Physics, Instrumentation

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/f588df13-3dcc-406d-8547-1ee9fd8ff087