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首页> 外文期刊>Physica, B. Condensed Matter >Pulsed NMR in the nuclear spin ordered phases of solid He-3 in a silver sinter
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Pulsed NMR in the nuclear spin ordered phases of solid He-3 in a silver sinter

机译:银烧结体中固体He-3的核自旋有序相中的脉冲NMR

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To obtain the exact spin structure of the nuclear magnetically ordered phases of solid He-3, in the BCC lattice called U2D2 and high field phase, both occurring below about 1 mK, we started a project of neutron scattering from the solid at the Hahn-Meitner Institut, Berlin. This experiment faces three main difficulties: to cool the solid to temperatures below I mK (or even much lower in the case of the HCP lattice), to keep it there under neutron flux, and to grow a single crystal within the sintered material needed for this purpose. As a first step we have performed pulsed NMR measurements in the ordered phases of solid He-3 in a silver sinter of 700 Angstrom particle size down to temperatures of 600 muK at various molar volumes. The samples remained in the ordered state for as long as I 10 h. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 1]
机译:为了获得固体He-3的核磁有序相的精确自旋结构,在称为U2D2的BCC晶格和高场相中都发生在大约1 mK以下,我们开始了从Hahn-的固体中子散射的计划。柏林Meitner研究所。该实验面临三个主要困难:将固体冷却至低于1 mK(在HCP晶格的情况下甚至更低)的温度,将其保持在中子通量下的温度以及在所需的烧结材料中生长单晶。这个目的。第一步,我们在不同摩尔体积下,在700埃粒度的银烧结体中,对固体He-3的有序相进行了脉冲NMR测量,温度低至600μK。样品保持有序状态长达1小时。 (C)2003 Elsevier Science B.V.保留所有权利。 [参考:1]

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