相关实验视频

Updated: Jun 16, 2025

$Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples$

Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

Published on: June 19, 2018

多功能多能硬X射线摄像机,用于研究受限和不受限制的快速电子动态和异构 (受邀)

T Barbui¹, L F Delgado-Aparicio¹, Y Savoye-Peysson²

¹Princeton Plasma Physics Laboratory, Princeton, New Jersey 08540, USA.

The Review of scientific instruments

|August 21, 2024

概括

位于WEST托卡马克上的新硬X射线 (HXR) 摄像头可以对快速电子和等离子体排放进行详细测量. 这种灵活的诊断方法实现了在托卡马克等离子体中首次检测到异型硬X射线发射.

科学领域:

核聚变能源的研究.
血物理学的等离子体物理学
在X射线诊断中使用X射线诊断.

背景情况:

像WEST这样的托卡马克设备对于核聚变能源研究至关重要.
了解快速电子的行为和等离子体物质相互作用对于反应堆的运行至关重要.
需要先进的诊断来探测复杂的等离子体现象.

研究的目的:

在WEST tokamak上安装和测试一台新的硬X射线 (HXR) 摄像机.
描述像素级能量值调整诊断的功能.
为了研究托卡马克等离子体中的快速电子动态和相关的排放.

主要方法:

在WEST托卡马克上安装和测试一个带有CdTe传感器的针孔HXR摄像机.
使用像素级能量值调整,同时进行空间,能量和时间分辨率的测量.
使用低混合 (LH) 代码 LUKE 来进行配置文件复制.

主要成果:

成功测量了由低混合 (LH) 波加速的快电子的核心辐射.
检测转移器区域中由快速电子损失引起的排放.
首次观察WEST核心和边缘等离子体与对立的 toroidal 趋势的异性质硬X射线发射.
通过LUKE代码验证的实验HXR配置文件.

结论:

新型HXR摄像机为等离子体诊断提供了前所未有的灵活性.
诊断成功捕获了关于快速电子群体及其相互作用的关键信息.
不同热带的HXR辐射为WEST的等离子体动力学提供了新的见解.

更多相关视频

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures

Published on: October 9, 2012

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic

Published on: August 25, 2016

相关概念视频

Scanning Electron Microscopy

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....

Transmission Electron Microscopy

Transmission Electron Microscopy

In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an optical microscope—developed the first prototype of the electron microscope. This development led to the development of the field of electron microscopy. In the transmission electron microscope (TEM), electrons are produced by a hot tungsten element and accelerated by a potential difference in an electron gun, which gives them up to 400...

Mass Analyzers: Common Types

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...