Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Specular reflection of thermal neutrons from Gd-containing layers and optimization of antireflective underlayers for polarizing coatings. / Pleshanov, N. K.; Peskov, B. G.; Pusenkov, V. M.; Syromyatnikov, V. G.; Schebetov, A. F.
в: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Том 560, № 2, 10.05.2006, стр. 464-479.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Specular reflection of thermal neutrons from Gd-containing layers and optimization of antireflective underlayers for polarizing coatings
AU - Pleshanov, N. K.
AU - Peskov, B. G.
AU - Pusenkov, V. M.
AU - Syromyatnikov, V. G.
AU - Schebetov, A. F.
PY - 2006/5/10
Y1 - 2006/5/10
N2 - A detailed analysis of specular neutron reflection from an absorbing medium is given. The experimental studies revealed that oxidation and roughness of the surface are the main factors that determine the neutron reflectivity of Gd-containing layers. It is concluded that the empirical approach used at present does not guarantee optimization of underlayer parameters (composition and thickness) and technological regimes. An algorithm of optimization is proposed, in which account is taken of the substrate potential, the dependence of the underlayer potential on the thermal neutron wavelength, the polarizing coating imperfections that enhance reflection of neutrons with the undesired spin. The antireflective TiZrGd underlayer for CoFe/TiZr supermirrors produced at the magnetron facility DIOGEN (PNPI, Gatchina) is optimized.
AB - A detailed analysis of specular neutron reflection from an absorbing medium is given. The experimental studies revealed that oxidation and roughness of the surface are the main factors that determine the neutron reflectivity of Gd-containing layers. It is concluded that the empirical approach used at present does not guarantee optimization of underlayer parameters (composition and thickness) and technological regimes. An algorithm of optimization is proposed, in which account is taken of the substrate potential, the dependence of the underlayer potential on the thermal neutron wavelength, the polarizing coating imperfections that enhance reflection of neutrons with the undesired spin. The antireflective TiZrGd underlayer for CoFe/TiZr supermirrors produced at the magnetron facility DIOGEN (PNPI, Gatchina) is optimized.
KW - Antireflective underlayers
KW - Neutron reflectometry
KW - Polarizing supermirrors
UR - http://www.scopus.com/inward/record.url?scp=33646103151&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2005.12.243
DO - 10.1016/j.nima.2005.12.243
M3 - Article
AN - SCOPUS:33646103151
VL - 560
SP - 464
EP - 479
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 2
ER -
ID: 86504248