Related Experiment Video
Updated: Jun 15, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Multichannel Thomson scattering system for the tokamak TFR based on two-detector spectrum analyzers
Abstract:
In actual and future large tokamaks, the electron temperature T(e) and density n(e) profiles must be measured with a single discharge and laser shot. We have reached this objective in a rather simple way: T(e) is deduced from the ratio of powers scattered into two large spectral intervals, while n(e) is deduced from the absolute power detected in one of the intervals and from the knowledge of T(e). We discuss this method and describe the spectrometers designed for this purpose and their calibration. T(e), n(e) profiles are obtained in a single shot on TFR with a nine-channel scattering system based on these two-detector spectrometers.
More Related Videos
08:50Total Internal Reflection Absorption Spectroscopy (TIRAS) for the Detection of Solvated Electrons at a Plasma-liquid Interface
Published on: January 24, 2018
08:22Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
Related Concept Videos
Tandem Mass Spectrometry
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
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.
Mass Analyzers: Common Types
Thomson's e/m Experiment
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
Atomic Absorption Spectroscopy: Instrumentation
The atomizer used in AAS can be either a flame atomizer or an...
Gas Chromatography: Types of Detectors-II