TY - JOUR
T1 - Absorbing sublayers and their influence on the polarizing efficiency of magnetic neutron mirrors
AU - Korneev, D. A.
AU - Pasyuk, V. V.
AU - Petrenko, A. V.
AU - Jankovski, H.
PY - 1992/2/1
Y1 - 1992/2/1
N2 - The spectral dependence of the reflectivity from thin films of natural Gd and GdTi alloy has been measured. The scattering length of Gd has resonances in the thermal region and consequently its compensation in a wide interval of neutron wavelengths is impossible. This is the reason of the strong decreasing of the polarizing properties of neutron mirrors. The possibility is discussed of producing a new absorbing sublayers with an important decrease of reflection in the neutron wavelength range from 1 to 10 Å. The neutron reflectivity was analyzed for absorbing thin BTi, BV and CdV alloys on glass substrates. The calculated reflectivity as a function of neutron wavelength was optimized for the concentration and layer thickness. First experimental data have been obtained at the Laboratory of Neutron Physics (Joint Institute for Nuclear Research, Dubna) and are presented.
AB - The spectral dependence of the reflectivity from thin films of natural Gd and GdTi alloy has been measured. The scattering length of Gd has resonances in the thermal region and consequently its compensation in a wide interval of neutron wavelengths is impossible. This is the reason of the strong decreasing of the polarizing properties of neutron mirrors. The possibility is discussed of producing a new absorbing sublayers with an important decrease of reflection in the neutron wavelength range from 1 to 10 Å. The neutron reflectivity was analyzed for absorbing thin BTi, BV and CdV alloys on glass substrates. The calculated reflectivity as a function of neutron wavelength was optimized for the concentration and layer thickness. First experimental data have been obtained at the Laboratory of Neutron Physics (Joint Institute for Nuclear Research, Dubna) and are presented.
UR - http://www.scopus.com/inward/record.url?scp=0038616993&partnerID=8YFLogxK
U2 - 10.1016/0168-583X(92)95117-A
DO - 10.1016/0168-583X(92)95117-A
M3 - Article
AN - SCOPUS:0038616993
SN - 0168-583X
VL - 63
SP - 328
EP - 332
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 3
ER -