Studies of nano-diamond reflectors for slow neutrons at PF2, PF1B, D17 and D11 instruments
We propose several experiments at instruments PF2, PF1B, D17, and D11 focused on studies of nano diamonds (NDs) as reflectors for very cold neutrons (VCNs) and cold neutrons (CNs) also as probes for small heating of ultracold neutrons (UCNs). We combine them in one proposal because of their strong interplay. Information obtained in these experiments will contribute to the solution of common physical problems. The experiments include: measurement of the reflectivity of UCNs from designed NDs also small heating of UCNs at designed NDs (with BGS spectrometer at PF2), measurement of quasi-specular reflection of CNs from designed NDs and measurement of neutron transport cross-sections for designed NDs and intercalated graphite (D17), measurement of small-angle neutron scattering at designed NDs (D11), and measurement of impurities in NDs using neutron-activation and prompt-gamma analysis (PF1B). The results expected within this program are highly complementary. The principle goal of this series of measurements is further improvement of the efficiency of NDs reflectors for slow neutrons and studies of NDs mobility on NDs surface and in the powder bulk.
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NESVIZHEVSKY Valery; BAESSLER Stefan; GELTENBORT Peter; JENTSCHEL Michael; LYATUN Ivan; Egor Lychagin; Nezvanov A.Yi.; PERRY Emily; REYNAUD Serge; SAERBECK Thomas; SCHWEINS Ralf; TURLYBEKULY Kylyshbek and Zhernenkov. (2019). Studies of nano-diamond reflectors for slow neutrons at PF2, PF1B, D17 and D11 instruments. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.3-07-386
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