中子全散射PDF实验数据

Schwarz晶体可能具有一种全新的局域结构。我们利用中子全散射技术获得的配对分布函数（PDF）是分析晶体局域结构的有效方法。我们在J-PARC的BL21束线站对Schwarz Cu、超细Cu、粗Cu三种样品进行了全散射实验。样品被密封在V-Ni罐中。测量了Schwarz Cu和Pt在7、150和300 K三种温度下的数据，其他比较样品仅在300 K下测量，每个扫描数据采集时间为2h。还测量了空的V罐、标准V棒和背景以进行原子对分布函数（PDF）分析。通过对归一化的结构因子S(Q)进行傅里叶变换可得到X射线PDF的G(r)。

Schwarz crystals may possess a completely novel local structure. The pair distribution function (PDF) derived from neutron total scattering measurements is an effective approach for analyzing the local structure of crystalline materials. We performed total scattering experiments on three samples, namely Schwarz Cu, ultrafine Cu, and coarse Cu, at the BL21 beamline station of J-PARC. All samples were hermetically sealed in V-Ni cans. Data for Schwarz Cu and Pt were collected at three temperatures: 7, 150, and 300 K, while the other comparative samples were only measured at 300 K. The data acquisition time for each scan was 2 hours. Empty V cans, standard V rods, and background measurements were also carried out to support atomic pair distribution function (PDF) analysis. The G(r) of X-ray pair distribution function (PDF) can be obtained by conducting Fourier transformation on the normalized structure factor S(Q).

搜集汇总

背景与挑战

背景概述

该数据集包含利用中子全散射技术对Schwarz Cu、超细Cu和粗Cu样品进行的配对分布函数（PDF）实验数据，旨在分析晶体的局域结构。实验在J-PARC的BL21束线站完成，测量温度覆盖7 K、150 K和300 K，数据采集时间为2小时，并包括背景测量和傅里叶变换处理，适用于局域结构研究。