多维度非相干汤姆逊散射系统在 PHAse Space MApping（PHASMA）装置中。

Multi-dimensional incoherent Thomson scattering system in PHAse Space MApping (PHASMA) facility.

机构信息

Department of Physics and Astronomy, Center for KINETIC Plasma Physics and West Virginia University, Morgantown, West Virginia 26506, USA.

出版信息

Rev Sci Instrum. 2023 Feb 1;94(2):023501. doi: 10.1063/5.0133665.

DOI:10.1063/5.0133665

PMID:36859025

Abstract

A multi-dimensional incoherent Thomson scattering diagnostic system capable of measuring electron temperature anisotropies at the level of the electron velocity distribution function (EVDF) is implemented on the PHAse Space MApping facility to investigate electron energization mechanisms during magnetic reconnection. This system incorporates two injection paths (perpendicular and parallel to the axial magnetic field) and two collection paths, providing four independent EVDF measurements along four velocity space directions. For strongly magnetized electrons, a 3D EVDF comprised of two characteristic electron temperatures perpendicular and parallel to the local magnetic field line is reconstructed from the four measured EVDFs. Validation of isotropic electrons in a single magnetic flux rope and a steady-state helicon plasma is presented.

摘要

一个能够在相位空间映射装置上测量电子速度分布函数（EVDF）水平的各向异性电子温度的多维非相干汤姆逊散射诊断系统，用于研究磁重联过程中的电子加速机制。该系统包括两个注入路径（垂直于和平行于轴向磁场）和两个收集路径，提供了四个独立的 EVDF 沿四个速度空间方向的测量。对于强磁化电子，从四个测量的 EVDF 重建了由两个特征电子温度组成的三维 EVDF，这两个特征电子温度垂直和平行于局部磁场线。本文介绍了在单个磁通量绳和稳态螺旋波等离子体中各向同性电子的验证。