<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Development of a non-depolarizing neutron guide for PERC"^^ . "The cold neutron beam station PERC (Proton Electron Radiation Channel)[1] is developed for measurements of angular correlation coefficients in beta-decay of free polarized neutrons with a precision of 10^{-4}. Inside PERC the neutron beam is confined laterally by the guide equipped with a supermirror. The neutron guide within PERC (where the ''active decay volume'' lies) has to be non-depolarizing at the same precision level of 10^{-4}. The depolarization may take place during reflection of neutrons from the guide walls with supermirror magnetic coatings placed in a strong magnetic field. In this thesis the feasibility of using supermirrors based on diamagnetic Cu and paramagnetic Ti instead of the traditionally used non-ferromagnetic Ni(Mo) or Ni(V) alloys and Ti is investigated. Development and production of the Cu/Ti supermirror coating are performed at Heidelberg University and described in this thesis. \r\n\r\nThe first depolarization test of the Cu/Ti multilayer covering, m=1.2, was done at the reflectometer of polarized neutrons at a reactor of the Institute Laue-Langevin, France. The reflectometer was based on the Opaque Test Bench [2], a tool for investigation neutron depolarization with high accuracy. The second depolarization test of the Cu/Ti multilayer samples, m=1.55 and m=1.7, and Ni(Mo)/Ti sample, m=1.5, was performed at the research reactor Munich II, Germany. The special reflectometer of polarized neutrons was built and optimized for the measurement of small neutron depolarization. The accuracy of this measurement was limited to 5*10^{-3} at the region of our interest. We suffer from the neutron depolarization caused by the specificity of used polarizer and analyzer in geometry of the experiment. No depolarization effect was observed in both experiments at the level of precision of the measurements."^^ . "2014" . . . . . . . "Nataliya"^^ . "Rebrova"^^ . "Nataliya Rebrova"^^ . . . . . . "Development of a non-depolarizing neutron guide for PERC (PDF)"^^ . . . "thesis_rebrova.pdf"^^ . . . "Development of a non-depolarizing neutron guide for PERC (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Development of a non-depolarizing neutron guide for PERC (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Development of a non-depolarizing neutron guide for PERC (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Development of a non-depolarizing neutron guide for PERC (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Development of a non-depolarizing neutron guide for PERC (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #17029 \n\nDevelopment of a non-depolarizing neutron guide for PERC\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .