RU2011148211A - METHOD FOR MEASURING NEUTRON POLARIZATION - Google Patents
METHOD FOR MEASURING NEUTRON POLARIZATION Download PDFInfo
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- RU2011148211A RU2011148211A RU2011148211/28A RU2011148211A RU2011148211A RU 2011148211 A RU2011148211 A RU 2011148211A RU 2011148211/28 A RU2011148211/28 A RU 2011148211/28A RU 2011148211 A RU2011148211 A RU 2011148211A RU 2011148211 A RU2011148211 A RU 2011148211A
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Abstract
1. Способ измерения поляризации нейтронов, заключающийся в избирательном отборе из пучка нейтронов со спином, параллельным магнитному полю, от нейтронов со спином, антипараллельным магнитному полю, и последующем анализе степени поляризации нейтронов, отличающийся тем, что рабочим материалом является нецентросимметричный кубический кристалл со структурой (В20), в котором возникает геликоидальное магнитное упорядочение, а отбор осуществляется за счет поляризационно-зависящего кирального взаимодействия нейтронов с магнитными спиралями.2. Способ по п.1, отличающийся тем, что измерение проводится ниже температуры перехода в состояние упорядоченной спирали Т.3. Способ по п.1, отличающийся тем, что измерение проводится в широком диапазоне магнитных полей Н<Н, где Н-критическое поле перехода из спирального в ферромагнитное состояние.4. Способ по п.1, отличающийся тем, что измерение проводится со 100% эффективностью и независимо от длины волны тепловых нейтронов.1. A method of measuring neutron polarization, which consists in selective selection from a neutron beam with a spin parallel to the magnetic field, from neutrons with a spin, antiparallel to the magnetic field, and the subsequent analysis of the degree of polarization of neutrons, characterized in that the working material is a non-centrosymmetric cubic crystal with the structure ( B20), in which helicoidal magnetic ordering occurs, and selection is carried out due to the polarization-dependent chiral interaction of neutrons with magnetic spirals. 2. The method according to claim 1, characterized in that the measurement is carried out below the temperature of the transition to the state of an ordered spiral T.3. The method according to claim 1, characterized in that the measurement is carried out in a wide range of magnetic fields H <H, where H is the critical field of the transition from helical to ferromagnetic state. The method according to claim 1, characterized in that the measurement is carried out with 100% efficiency and regardless of the wavelength of thermal neutrons.
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RU2011148211/28A RU2011148211A (en) | 2011-11-25 | 2011-11-25 | METHOD FOR MEASURING NEUTRON POLARIZATION |
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RU2011148211/28A RU2011148211A (en) | 2011-11-25 | 2011-11-25 | METHOD FOR MEASURING NEUTRON POLARIZATION |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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RU2611107C1 (en) * | 2015-11-19 | 2017-02-21 | Федеральное государственное бюджетное учреждение "Петербургский институт ядерной физики им. Б.П. Константинова" (ФГБУ "ПИЯФ") | Neutron energy small changes measurement method |
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2011
- 2011-11-25 RU RU2011148211/28A patent/RU2011148211A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2611107C1 (en) * | 2015-11-19 | 2017-02-21 | Федеральное государственное бюджетное учреждение "Петербургский институт ядерной физики им. Б.П. Константинова" (ФГБУ "ПИЯФ") | Neutron energy small changes measurement method |
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