Experimental test of 3He neutron-spin filter in MIEZE spectrometer
Experimental test of 3He neutron-spin filter in MIEZE spectrometer
复制标题
MIEZE能谱仪中3He中子自旋滤光片的实验测试
DOI：
10.1088/1742-6596/1316/1/012013
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
T. Oda
中科院分区：
文献类型：
--
作者：
H. Hayashida;M. Hino;H. Endo;T. Oku;T. Okudaira;K. Sakai;T. Oda
调制强度零努力谱仪（MIEZE）是一种中子共振自旋回波谱仪，可以通过测量中间散射函数I （Q, τ）来分析凝聚态物质的慢动力学。MIEZE光谱仪的一个关键特点是它在样品和探测器之间留下了完全自由的空间，因为样品被放置在中子自旋分析仪之后。用传统的中子自旋回波光谱仪测量磁动力学是困难的，但使用MIEZE光谱仪，只需在样品后引入第二个分析仪就可以完成这样的测量。高精度测量磁动力学需要将背景降低到最小，3氦中子自旋滤波器（3 He- nsf）是一种很有前途的候选仪器。然而，这种方法的一个困难是3he气体从3he - nsf扩散，这可能被测量和解释为动力学。因此，我们研究了在MIEZE光谱仪中使用3he - nsf作为第二分析仪时，是否可以检测到气体扩散的动力学。为此，我们使用了安装在日本质子加速器研究中心（J-PARC MLF）材料与生命科学实验设施的光束线06 （BL06）上的MIEZE光谱仪进行了实验。结果表明，没有检测到3 He-NSF的气体扩散动力学，因此，3 He-NSF可以作为MIEZE光谱仪的第二分析仪。
A modulated intensity by zero effort (MIEZE) spectrometer is a type of neutron-resonance spin-echo spectrometer and can be used to analyze the slow dynamics of condensed matter by measuring the intermediate scattering function I (Q, τ). A crucial feature of a MIEZE spectrometer is it leaves completely free the space between the sample and the detector because the sample is placed after the neutron-spin analyzer. Measuring the magnetic dynamics with a conventional neutron-spin-echo spectrometer is difficult, but with a MIEZE spectrometer such a measurement may be done simply by introducing a second analyzer after the sample. Measuring the magnetic dynamics with high precision requires the background to be reduced to a minimum and is a job for which a 3 He neutron-spin filter (3 He-NSF) is a promising candidate as a second analyzer. However, one difficulty with this approach is the diffusion of 3 He gas from the 3 He-NSF, which may be measured and interpreted as dynamics. Therefore, we investigate herein whether the dynamics of gas diffusion is detected when using a 3 He-NSF as second analyzer in a MIEZE spectrometer. Toward this end, we experimented with the MIEZE spectrometer installed at beamline 06 (BL06) at the Materials and Life Science Experimental Facility at Japan Proton Accelerator Research Complex (J-PARC MLF). The results confirm that the gas-diffusion dynamics of the 3 He-NSF are not detected, and that the 3 He-NSF, therefore, can be used as a second analyzer in this MIEZE spectrometer.
自旋极化正电子素飞行时间法的发展
DOI：
--
发表时间：
2022
期刊：
影响因子：
--
作者：
Maekawa Masaki; Miyashita Atsumi; Kawasuso Atsuo
通讯作者：
Kawasuso Atsuo
^3He中子自旋过滤器玻璃池的研究
影响因子：
2.8
作者：
Y.Sakaguchi;H.Kira;T.Oku;T.Shinohara;J.Suzuki;K.Sakai;M.Nakamura;K.Suzuya;K.Aizawa;M.Arai;M.Takeda;S.Wakimoto;D.Yamazaki;S.Koizumi;Y.Endoh;L.-J.Chang;Y.Arimoto;T.Ino;H.M.Shimizu;T.Kamiyama;K.Ohoyama;H.Hiraka;K.Tsutsumi;K.Yamada;K.O
通讯作者：
K.O