The effect of large irradiation doses on polarizing and non-polarizing supermirrors

被引：4
作者：
Ul'yanov, VA [1 ]
Böni, P
Khamov, VN
Orlov, SP
Peskov, BG
Pleshanov, NK
Pusenkov, VM
Schebetov, AF
Serebrov, AP
Sushkov, PA
Syromyatnikov, VG
机构：
[1] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Distr, Russia
[2] Swiss Fed Inst Technol, Lab Neutron Scattering, CH-5232 Villigen, Switzerland
[3] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
来源：
PHYSICA B-CONDENSED MATTER | 2001年 / 297卷 / 1-4期
关键词：
neutron supermirrors; irradiation stability; neutron reflectometry;
D O I：
10.1016/S0921-4526(00)00870-X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In order to study radiation stability of the neutron supermirror coatings, the effect of large irradiation doses on polarizing (FeCoV/TiZr) and non-polarizing (NiMo/Ti and Ni/Ti) supermirrors has been studied. The samples were irradiated at the WWR-M reactor (Gatchina) inside a vertical channel behind the Be reflector, where the flux of thermal neutrons and neutrons with energies exceeding 1 MeV was, respectively, (0.6-1) x 10(13) and 7 x 10(11) cm(-2) s(-1). During irradiation the temperature of the samples did not exceed 70 degreesC. The data obtained at the reflectometer RPN-2M? (PNPI) for FeCoV/TiZr and NiMo/Ti supermirrors (produced in PNPI) and for Ni/Ti supermirrors (produced in PSI), irradiated with different doses, are presented. The polarizing efficiency and the reflectivity of the supermirrors sputtered onto float-glass substrates have not revealed significant changes for the fluences up to 10(19) cm-2. (C) 2001 Elsevier Science B.V. All rights reserved.
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页码：136 / 139
页数：4
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